Dr. Heejoo Choi
Assistant Research Professor
SPIE Involvement:
Author | Editor
Area of Expertise:
Optical testing , Optical manufacturing , Optical engineering
Publications (79)

SPIE Journal Paper | 20 December 2024
JATIS, Vol. 10, Issue 04, 042309, (December 2024) https://doi.org/10.1117/12.10.1117/1.JATIS.10.4.042309
KEYWORDS: Mirror surfaces, Wavefront errors, Design, Optical surfaces, Mirrors, Space telescopes, Optical design, Tolerancing, Observatories, Equipment

Proceedings Article | 1 October 2024 Presentation + Paper
Yiyang Huang, Roger Angel, Hyukmo Kang, Heejoo Choi, Matt Rademacher, Hill Tailor, Rebecca Su, Daewook Kim
Proceedings Volume 13132, 131320E (2024) https://doi.org/10.1117/12.3026858
KEYWORDS: Metrology, Deflectometry, Deformation, Reflectors, Displays, Reflection, Actuators, Data processing, Zemax, Phase unwrapping

Proceedings Article | 30 September 2024 Presentation + Paper
Proceedings Volume 13134, 131340F (2024) https://doi.org/10.1117/12.3028105
KEYWORDS: Telescopes, Stochastic processes, Mirrors, Algorithm development, Wavefront errors, Model based design, Wavefronts, Optical alignment, Wavefront sensors, Photovoltaics

Proceedings Article | 30 September 2024 Presentation + Paper
Rebecca Su, Heejoo Choi, Daewook Kim
Proceedings Volume 13134, 1313407 (2024) https://doi.org/10.1117/12.3027817
KEYWORDS: Wavefront errors, Lenses, Deflectometry, Eyeglasses, Cameras, Wavefronts, Tolerancing, Parabolic mirrors, Zemax, Optical testing

Proceedings Article | 11 September 2024 Presentation + Paper
Proceedings Volume 13094, 1309424 (2024) https://doi.org/10.1117/12.3020638
KEYWORDS: Retroreflectors, Telescopes, Collimators, Design, Optical alignment, Wavefront sensors, Metrology, Mirrors, Wavefront errors

Proceedings Article | 3 September 2024 Presentation + Paper
Proceedings Volume 13097, 130970L (2024) https://doi.org/10.1117/12.3019441
KEYWORDS: Adaptive optics, Telescopes, Wavefront sensors, Equipment, Actuators, Observatories, Cameras, Wavefronts, Stars, Metrology

Proceedings Article | 26 August 2024 Poster + Paper
Kristyn Kadala, Torben Andersen, Heejoo Choi, Ross Gregoriev, Daewook Kim, Yifan Li, Grey Tarkenton
Proceedings Volume 13100, 131007B (2024) https://doi.org/10.1117/12.3019150
KEYWORDS: Mirrors, Magnetism, Modeling, Optical surfaces, Liquids, Design, Parabolic mirrors, Fluid dynamics, Mirror surfaces, Reflection

Proceedings Article | 23 August 2024 Presentation + Paper
Proceedings Volume 13092, 1309222 (2024) https://doi.org/10.1117/12.3020654
KEYWORDS: Coronagraphy, Cameras, Actuators, Sensors, Optical benches, Calibration, Polarization, Reflection


Proceedings Article | 22 August 2024 Poster
Haeun Chung, Carlos Vargas, Erika Hamden, Heejoo Choi, Sumedha Uppnor, Walter Harris, Jason Corliss, Drew Miles, Manuel Quijada, Luis Rodriguez de Marcos, April Jewell, Fabien Grisé, David Schiminovich, Keri Hoadley, John Hennessy, Kwang-il Seon, Youngsoo Jo
Proceedings Volume 13093, 130933M (2024) https://doi.org/10.1117/12.3018507

Proceedings Article | 21 August 2024 Presentation + Paper
Proceedings Volume 13093, 130930A (2024) https://doi.org/10.1117/12.3020822
KEYWORDS: Ultraviolet astronomy, 3D metrology, Far ultraviolet, Optical alignment, Computer generated holography, Tolerancing, Prototyping, Microchannel plates, Vacuum, Contamination, Spectrographs

Proceedings Article | 21 August 2024 Presentation + Paper
Proceedings Volume 13093, 1309302 (2024) https://doi.org/10.1117/12.3017274
KEYWORDS: Optical gratings, Microchannel plates, Spectrographs, Optical coatings, Optical alignment, Spectral resolution

Proceedings Article | 21 August 2024 Poster + Paper
Nicole Melso, Aafaque Khan, Hannah Tanquary, Elijah Garcia, Daniel Truong, Naomi Yescas, Sooseong Park, Sumedha Uppnor, Carlos Vargas, Haeun Chung, Tom Mcmahon, Keri Hoadley, Erika Hamden, Jason Corliss, Bill Verts, Simran Agarwal, Ramona Augustin, Peter Behroozi, Harrison Bradley, Trenton Brendel, Joe Burchett, Jasmine Martinez Castillo, Jacob Chambers, Heejoo Choi, Lauren Corlies, Fernando Coronado, Greyson Davis, Ralf-Jürgen Dettmar, Ewan Douglas, Giulia Ghidoli, Alfred Goodwin, Dave Hamara, Walt Harris, Carl Hergenrother, J. Christopher Howk, Miriam Keppler, Nazende ipek Kerkeser, John Kidd, DaeWook Kim, Jessica Li, Jamison Noenickx, Gabe Noriega, Ryan Pecha, Cork Sauve, David Schiminovich, Sanford Selznick, Oswald Siegmund, Rebecca Su, Ellie Wolcott, Dennis Zaritsky
Proceedings Volume 13093, 130932Q (2024) https://doi.org/10.1117/12.3017698
KEYWORDS: Contamination, Vacuum chambers, Contamination control, Humidity, Vacuum, Far ultraviolet

Proceedings Article | 21 August 2024 Poster + Paper
Proceedings Volume 13093, 130932W (2024) https://doi.org/10.1117/12.3017215
KEYWORDS: Optical gratings, Vacuum, Mirrors, Optical alignment, Diffraction gratings, Simulations, Optical fabrication, Microchannel plates, Vacuum chambers, Sensors

Proceedings Article | 25 July 2024 Presentation + Paper
Proceedings Volume 13101, 131011Q (2024) https://doi.org/10.1117/12.3017883
KEYWORDS: Calibration, Sensors, Microchannel plates, Device simulation, Space operations, Image processing, Data processing, Extragalactic astronomy, Software development

Proceedings Article | 5 October 2023 Presentation
Proceedings Volume PC12677, PC126770G (2023) https://doi.org/10.1117/12.2677762
KEYWORDS: Telescopes, Optical alignment, Space telescopes, Optical fabrication, Lenses, Fabrication, Wavefronts, Stray light, Spectroscopy, Space mirrors

Proceedings Article | 5 October 2023 Presentation
Heejoo Choi, Haeun Chung, Carlos Vargas, Aafaque Khan, Jason Corliss, Daewook Kim
Proceedings Volume PC12677, PC126770D (2023) https://doi.org/10.1117/12.2678100
KEYWORDS: Telescopes, Spectroscopy, Optical alignment, Computer generated holography, Microchannel plates, Extreme ultraviolet, Tolerancing, Optical gratings, Galactic astronomy, Satellites

Proceedings Article | 4 October 2023 Presentation + Paper
Heejoo Choi, Young-Sik Kim, Hyukmo Kang, Solvay Blomquist, Hill Tailor, Douglas Kelly, Mike Eiklenborg, Ewan Douglas, Daewook Kim
Proceedings Volume 12677, 126770F (2023) https://doi.org/10.1117/12.2677986
KEYWORDS: Tolerancing, Received signal strength, Telescopes, Mirrors, Wavefront errors, Observatories, Space mirrors, Space telescopes, Optical surfaces, Optical design

Proceedings Article | 4 October 2023 Presentation + Paper
Byeongjoon Jeong, Heejoo Choi, Sotero Ordones, Daewook Kim
Proceedings Volume 12677, 1267709 (2023) https://doi.org/10.1117/12.2677686
KEYWORDS: Interference (communication), Deflectometry, Reflection, Displays, Optical testing, Digital filtering, Tunable filters, Geometrical optics, Ray tracing, Image filtering

Proceedings Article | 4 October 2023 Presentation + Paper
Proceedings Volume 12677, 126770I (2023) https://doi.org/10.1117/12.2677663
KEYWORDS: Telescopes, Wavefronts, Wavefront errors, Wavefront sensors, Point spread functions, Coronagraphy, Signal to noise ratio, Error analysis, Integrated modeling, Wavefront compensation

Proceedings Article | 4 October 2023 Presentation + Paper
Proceedings Volume 12677, 126770E (2023) https://doi.org/10.1117/12.2682180
KEYWORDS: Design and modelling, Telescopes, Space telescopes, Space mirrors, James Webb Space Telescope, Mirrors, Telescope design, Optical surfaces, Monochromatic aberrations, Stars

Proceedings Article | 4 October 2023 Presentation + Paper
Proceedings Volume 12677, 126770H (2023) https://doi.org/10.1117/12.2677069
KEYWORDS: Wavefront errors, Actuators, Active optics, Mirrors, Mirror surfaces, Device simulation, Telescopes, Error analysis, Computer simulations, Surface finishing

Proceedings Article | 4 October 2023 Presentation + Paper
Proceedings Volume 12672, 1267206 (2023) https://doi.org/10.1117/12.2676217
KEYWORDS: Deflectometry, Cameras, Optical surfaces, Optical testing, Crystalline lens, Ophthalmic optics, Mirror surfaces, Displays

Proceedings Article | 4 October 2023 Presentation + Paper
Proceedings Volume 12684, 1268407 (2023) https://doi.org/10.1117/12.2678628
KEYWORDS: Deflectometry, Optical alignment, Image processing, Optical testing, Dark field illumination, Industrial applications

Proceedings Article | 27 September 2023 Presentation
Proceedings Volume 12678, 126780C (2023) https://doi.org/10.1117/12.2677212
KEYWORDS: Galactic astronomy, Design and modelling, Ultraviolet radiation, Spectrographs, Optical alignment, Computer generated holography, Ultraviolet telescopes, Ultraviolet detectors, UV-Vis spectroscopy, Tolerancing

Proceedings Article | 8 March 2023 Presentation + Paper
Proceedings Volume 12445, 124450G (2023) https://doi.org/10.1117/12.2656192
KEYWORDS: LIDAR, Beam steering, Augmented reality, Digital micromirror devices, Microelectromechanical systems, Micromirrors, Image resolution, Spatial light modulators, Light sources and illumination, Autoregressive models

SPIE Journal Paper | 2 December 2022
JATIS, Vol. 8, Issue 04, 045003, (December 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.4.045003
KEYWORDS: Mirrors, Infrared telescopes, Telescopes, Near infrared, Spectrographs, Prisms, Infrared radiation, Equipment, Sensors, Spherical lenses

SPIE Journal Paper | 25 November 2022 Open Access
Trenton Brendel, Aafaque Khan, Simran Agarwal, Heejoo Choi, Daewook Kim, Erika Hamden, Vincent Picouet, D. Christopher Martin, Bruno Milliard, David Schiminovich, Shouleh Nikzad, Jean Evrard, Nicolas Bray, Johan Montel, Keri Hoadley, Drew Miles, Gillian Kyne, Jessica Li, Zeren Lin, Haeun Chung, Philippe Balard, Patrick Blanchard, Marty Crabill, Charles-Antoine Chevrier, Alain Peus, Ignacio Cevallos-Aleman, Olivia Jones, Harrison Bradley, Naz Ipek Kerkeser, Matthew Werneken, Didier Vibert, Nicole Melso, David Valls-Gabaud
JATIS, Vol. 8, Issue 04, 048001, (November 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.4.048001
KEYWORDS: Baffles, Stray light, Sensors, Spectrographs, Mirrors, Balloons, Ultraviolet radiation, Stray light control, Tongue, Light scattering

Proceedings Article | 11 October 2022 Presentation
Kyung-Jo Kim, Kate Newcomer, Sasaan Showghi, Jay Liebowitz, Robert Norwood, Heejoo Choi
Proceedings Volume 12219, 122190J (2022) https://doi.org/10.1117/12.2634177
KEYWORDS: Thermography, Infrared imaging, Infrared radiation, Optical imaging, Packaging, Infrared sensors, Wafer-level optics, Resistance, Polymers, Optical components

Proceedings Article | 3 October 2022 Presentation + Paper
Proceedings Volume 12221, 122210J (2022) https://doi.org/10.1117/12.2633443
KEYWORDS: Telescopes, Diffraction, Lens design, Spherical lenses, Optical instrument design, Optical fabrication, Glasses

Proceedings Article | 3 October 2022 Presentation + Paper
Proceedings Volume 12221, 122210M (2022) https://doi.org/10.1117/12.2633090
KEYWORDS: Distortion, Metrology, Imaging systems, Image processing, Cameras, Calibration

Proceedings Article | 3 October 2022 Presentation + Paper
Proceedings Volume 12221, 122210C (2022) https://doi.org/10.1117/12.2633184
KEYWORDS: Diffractive optical elements, Astrobiology, Telescopes, Space observatories, Planets, Space telescopes, James Webb Space Telescope, Space operations, Stars, Satellites, Optical fabrication

Proceedings Article | 3 October 2022 Presentation + Paper
Proceedings Volume 12221, 122210I (2022) https://doi.org/10.1117/12.2633685
KEYWORDS: Optical alignment, Telescopes, Optical testing, 3D modeling, Observatories, Magnetism, Glasses, Fresnel lenses, Tolerancing, Space observatories

Proceedings Article | 3 October 2022 Presentation + Paper
Proceedings Volume 12221, 122210H (2022) https://doi.org/10.1117/12.2633760
KEYWORDS: Metrology, Optical alignment, Optics manufacturing, Telescopes, Segmented mirrors, Deflectometry, Automatic alignment

Proceedings Article | 3 October 2022 Presentation + Paper
Proceedings Volume 12221, 122210F (2022) https://doi.org/10.1117/12.2635495
KEYWORDS: Stray light, Telescopes, Stray light analysis, Ray tracing, Lens design, Cameras, Receivers, Optical testing, Optical fabrication

Proceedings Article | 3 October 2022 Open Access Paper
Proceedings Volume 12213, 122130H (2022) https://doi.org/10.1117/12.2632801
KEYWORDS: Optics education, Education and training, Optical design, Optical engineering, Optical design software

Proceedings Article | 29 August 2022 Presentation + Paper
Proceedings Volume 12188, 121880N (2022) https://doi.org/10.1117/12.2628819
KEYWORDS: Point spread functions, Coronagraphy, Diffraction, Wavefronts, Telescopes, Mirrors, Wave propagation, Performance modeling, Observatories

Proceedings Article | 29 August 2022 Poster + Paper
Proceedings Volume 12182, 121823L (2022) https://doi.org/10.1117/12.2631704
KEYWORDS: Stray light, Sensors, Mirrors, Spectrographs, Light scattering, Ultraviolet radiation, Scattering

Proceedings Article | 29 August 2022 Presentation + Paper
Breann Sitarski, Andrew Rakich, Hugo Chiquito, Wylie Rosenthal, Antonin Bouchez, William Schoenell, Bo Xin, Priscila Pires, Joel Nissen, P. Schurter, Richard Demers, Peter Thompson, Brian McLeod, Bijan Nemati, Glenn Brossus, Brian Walls, Heejoo Choi, Guillermo Gonzalez, David Nemati
Proceedings Volume 12182, 1218207 (2022) https://doi.org/10.1117/12.2630598
KEYWORDS: Mirrors, Retroreflectors, Sensors, Telescopes, Error analysis, Collimators, Prototyping, Metrology, Laser metrology

Proceedings Article | 27 August 2022 Presentation + Paper
Proceedings Volume 12180, 121801Q (2022) https://doi.org/10.1117/12.2629100
KEYWORDS: Space telescopes, Receivers, Astronomy, Optical design, Satellites, Mirrors, Cryogenics, Space operations, Metrology, LIDAR

Proceedings Article | 27 August 2022 Poster + Paper
Proceedings Volume 12180, 121805M (2022) https://doi.org/10.1117/12.2630704
KEYWORDS: Coronagraphy, Wavefronts, Wavefront sensors, Actuators, Optical benches, Astronomical imaging, Cameras, Point spread functions, Imaging technologies, Light scattering

Proceedings Article | 27 August 2022 Poster + Paper
Proceedings Volume 12180, 1218069 (2022) https://doi.org/10.1117/12.2629578
KEYWORDS: Wavefronts, Sensors, Coronagraphy, Wavefront sensors, Tolerancing, Cameras, Stars, Telescopes, Photodetectors, Error analysis

Proceedings Article | 27 August 2022 Poster + Paper
Jaren Ashcraft, Heejoo Choi, Ewan Douglas, Kevin Derby, Kyle Van Gorkom, Daewook Kim, Ramya Anche, Alex Carter, Olivier Durney, Sebastiaan Haffert, Lori Harrison, Maggie Kautz, Jennifer Lumbres, Jared Males, Kian Milani, Oscar Montoya, George Smith
Proceedings Volume 12180, 121805L (2022) https://doi.org/10.1117/12.2628855
KEYWORDS: Coronagraphy, Wavefronts, Mirrors, Interferometers, Wavefront sensors, Point spread functions, Optical benches, Cameras, Astronomical imaging

SPIE Journal Paper | 16 August 2022 Open Access
JATIS, Vol. 8, Issue 03, 034002, (August 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.3.034002
KEYWORDS: Mirrors, Optical design, Astronomy, Satellites, Reflectors, Receivers, Telescopes, Monochromatic aberrations, Space telescopes, Wavefronts

Proceedings Article | 2 March 2022 Presentation + Paper
Proceedings Volume 12014, 1201407 (2022) https://doi.org/10.1117/12.2608501
KEYWORDS: Digital micromirror devices, Mirrors, Beam steering, Microelectromechanical systems, LIDAR, Diffraction, Micromirrors, Image restoration, Transmitters, Receivers

Proceedings Article | 1 September 2021 Open Access Paper
Proceedings Volume 11820, 118200V (2021) https://doi.org/10.1117/12.2594412
KEYWORDS: Deflectometry, Optical testing, Optical fabrication, Interferometers, Spatial frequencies, Metrology, Mirrors, Telescopes

Proceedings Article | 24 August 2021 Open Access Presentation + Paper
Proceedings Volume 11820, 118200P (2021) https://doi.org/10.1117/12.2594610
KEYWORDS: Antennas, Mirrors, Scanners, Reflectivity, Optical design, Terahertz radiation, Sensors, Geometrical optics, Astronomy, Aluminum

Proceedings Article | 24 August 2021 Open Access Presentation + Paper
Proceedings Volume 11820, 118200R (2021) https://doi.org/10.1117/12.2594403
KEYWORDS: Actuators, Reflectors, Computer aided design, Antennas, Prototyping, Polonium, Reflector design, Aluminum, Wavefronts, Solid modeling

Proceedings Article | 24 August 2021 Open Access Presentation + Paper
Proceedings Volume 11820, 118200W (2021) https://doi.org/10.1117/12.2594902
KEYWORDS: Deflectometry, Calibration, Cameras, Antennas, Metrology

Proceedings Article | 24 August 2021 Open Access Presentation + Paper
Proceedings Volume 11820, 118200U (2021) https://doi.org/10.1117/12.2594050
KEYWORDS: Reflectors, Finite element methods, James Webb Space Telescope, Telescopes, Mirrors, Antennas, Inverse problems

Proceedings Article | 24 August 2021 Presentation + Paper
Proceedings Volume 11820, 118200H (2021) https://doi.org/10.1117/12.2598879
KEYWORDS: Mirrors, Point spread functions, Diffraction, Ultraviolet radiation, Telescopes, Hubble Space Telescope, Surface finishing, Observatories, Ultraviolet telescopes, Monochromatic aberrations

Proceedings Article | 20 August 2021 Presentation + Paper
Haeun Chung, Carlos Vargas, Erika Hamden, Tom McMahon, Kerry Gonzales, Aafaque Khan, Simran Agarwal, Hop Bailey, Peter Behroozi, Trenton Brendel, Heejoo Choi, Tom Connors, Lauren Corlies, Jason Corliss, Ralf-Jürgen Dettmar, David Dolana, Ewan Douglas, John Guzman, Dave Hamara, Walt Harris, Karl Harshman, Carl Hergenrother, Keri Hoadley, John Kidd, Daewook Kim, Jessica Li, Manny Montoya, Corwynn Sauve, David Schiminovich, Sanford Selznick, Oswald Siegmund, Michael Ward, Ellie Wolcott, Dennis Zaritsky
Proceedings Volume 11819, 1181903 (2021) https://doi.org/10.1117/12.2593001
KEYWORDS: Galactic astronomy, Spectrographs, Microchannel plates, Telescopes, Spectral resolution, Ultraviolet radiation, Target detection, Signal detection, Mirrors

SPIE Journal Paper | 12 March 2021
Heejoo Choi, Isaac Trumper, Yi-Ting Feng, Hyukmo Kang, Joel Berkson, Haeun Chung, Erika Hamden, Dae Wook Kim
JATIS, Vol. 7, Issue 01, 014006, (March 2021) https://doi.org/10.1117/12.10.1117/1.JATIS.7.1.014006
KEYWORDS: Spectroscopy, Sensors, Ultraviolet radiation, Space telescopes, Spectral resolution, Diffraction gratings, Optical design, Freeform optics, Diffraction, Mirrors

Proceedings Article | 5 March 2021 Presentation + Paper
Proceedings Volume 11698, 116980I (2021) https://doi.org/10.1117/12.2582899
KEYWORDS: Beam steering, Digital micromirror devices, LIDAR, Sensors, Micromirrors, Pulsed laser operation, Diffraction, Signal detection, Oscilloscopes, Mirrors

Proceedings Article | 15 January 2021 Paper
Proceedings Volume 11761, 1176103 (2021) https://doi.org/10.1117/12.2586867

Proceedings Article | 13 December 2020 Open Access Presentation + Paper
Erin Maier, Ewan Douglas, Dae Wook Kim, Kate Su, Jaren Ashcraft, James Breckinridge, Heejoo Choi, Elodie Choquet, Thomas Connors, Olivier Durney, Kerry Gonzales, Charlotte Guthery, Christian Haughwout, James Heath, Justin Hyatt, Jennifer Lumbres, Jared Males, Elisabeth Matthews, Kian Milani, Oscar Montoya, Mamadou N'Diaye, Jamison Noenickx, Leonid Pogorelyuk, Garreth Ruane, Glenn Schneider, George Smith, Christopher Stark
Proceedings Volume 11443, 114431Y (2020) https://doi.org/10.1117/12.2560878
KEYWORDS: Coronagraphy, Exoplanets, Deformable mirrors, Microelectromechanical systems, Prototyping, Light scattering, Visible radiation, Wavefronts, Rockets, Telescopes

Proceedings Article | 13 December 2020 Presentation + Paper
Proceedings Volume 11445, 114450R (2020) https://doi.org/10.1117/12.2558013
KEYWORDS: Mirrors, Telescopes, Prototyping, Laser systems engineering, Optical alignment, Metrology, Laser metrology, Cameras, Kinematics, Collimators

Proceedings Article | 5 November 2020 Open Access Paper
Proceedings Volume 11568, 115680I (2020) https://doi.org/10.1117/12.2575809
KEYWORDS: Telescopes, James Webb Space Telescope, Point spread functions, Exoplanets, Mirrors, Stars, Diffraction, Imaging systems, Image segmentation, Optical instrument design

Proceedings Article | 20 August 2020 Presentation + Paper
Marcos Esparza, Heejoo Choi, Dae Wook Kim
Proceedings Volume 11487, 114870V (2020) https://doi.org/10.1117/12.2569442
KEYWORDS: Optical alignment, Tolerancing, Deflectometry, Telescopes, Observatories, Image segmentation, 3D modeling, Mirrors, Interferometers

Proceedings Article | 20 August 2020 Presentation + Paper
Proceedings Volume 11487, 114870O (2020) https://doi.org/10.1117/12.2576955
KEYWORDS: Deflectometry, Computer simulations, Sensors, Calibration, Cameras, Optical alignment, Measurement devices, Ray tracing

Proceedings Article | 20 August 2020 Presentation + Paper
Heejoo Choi, Isaac Trumper, Yi-Ting Feng, Hyukmo Kang, Erika Hamden, Dae Wook Kim
Proceedings Volume 11487, 114870W (2020) https://doi.org/10.1117/12.2570489
KEYWORDS: Spectroscopy, Optical design, Spectral resolution, Diffraction gratings, Diffraction, Mirrors, Freeform optics, Telescopes

Proceedings Article | 20 August 2020 Presentation + Paper
Proceedings Volume 11487, 114870L (2020) https://doi.org/10.1117/12.2568168
KEYWORDS: Deflectometry, Optics manufacturing, Prototyping, Light sources

Proceedings Article | 20 August 2020 Presentation + Paper
Proceedings Volume 11487, 114870N (2020) https://doi.org/10.1117/12.2569750
KEYWORDS: Deflectometry, Metrology, Reflectors, Photogrammetry, Telescopes

Proceedings Article | 20 August 2020 Presentation + Paper
Heejoo Choi, Marcos Esparza, Ariel Lamdan, Yi-Ting Feng, Tom Milster, Daniel Apai, Dae Wook Kim
Proceedings Volume 11487, 114870M (2020) https://doi.org/10.1117/12.2569310
KEYWORDS: Metrology, Optical fabrication, Optical alignment, Telescopes, Cameras, Tolerancing

Proceedings Article | 20 August 2020 Presentation + Paper
Proceedings Volume 11487, 114870E (2020) https://doi.org/10.1117/12.2576438
KEYWORDS: Telescopes, Kinematics, Metrology, Collimation, Image quality, Control systems

Proceedings Article | 7 April 2020 Paper
Proceedings Volume 11352, 1135202 (2020) https://doi.org/10.1117/12.2555650
KEYWORDS: Deflectometry, Freeform optics, Optical testing, Optical design, Optics manufacturing, Infrared radiation, Metrology, Data analysis, Mirrors

Proceedings Article | 28 February 2020 Presentation + Paper
Proceedings Volume 11294, 112940C (2020) https://doi.org/10.1117/12.2546355
KEYWORDS: Digital micromirror devices, Wavefronts, Diffraction, Micromirrors, Beam steering, LIDAR, Mirrors, Spatial light modulators, Modulation

Proceedings Article | 12 September 2019 Presentation
Proceedings Volume 11125, 111250I (2019) https://doi.org/10.1117/12.2529029
KEYWORDS: LIDAR, Digital micromirror devices, Beam steering, Laser sources, Semiconductor lasers, Laser applications, Optical components, Microscopy, Microelectromechanical systems, Mirrors

Proceedings Article | 3 September 2019 Presentation + Paper
Proceedings Volume 11102, 1110207 (2019) https://doi.org/10.1117/12.2529869
KEYWORDS: Particles, Inspection, Image processing, Modulation, Optical inspection, Data processing

Proceedings Article | 13 May 2019 Presentation
Proceedings Volume 10991, 109910Q (2019) https://doi.org/10.1117/12.2518789
KEYWORDS: Deformable mirrors, Optical testing, Adaptive optics, Algorithm development, Wavefronts, Interferometry, Stochastic processes, Phase measurement, Deflectometry

SPIE Journal Paper | 17 April 2019
OE, Vol. 58, Issue 09, 092608, (April 2019) https://doi.org/10.1117/12.10.1117/1.OE.58.9.092608
KEYWORDS: Freeform optics, Single point diamond turning, Polymethylmethacrylate, Spatial frequencies, Radium, Polishing, Surface finishing, Optics manufacturing, Surface roughness, Photovoltaics

SPIE Journal Paper | 26 March 2019
OE, Vol. 58, Issue 09, 092603, (March 2019) https://doi.org/10.1117/12.10.1117/1.OE.58.9.092603
KEYWORDS: Particles, Modulation, Optical inspection, Sensors, Light emitting diodes, Signal to noise ratio, Inspection, Light sources, Optical engineering, Data processing

Proceedings Article | 14 September 2018 Presentation + Paper
Proceedings Volume 10742, 107420Y (2018) https://doi.org/10.1117/12.2320745
KEYWORDS: Deflectometry, Cameras, Data modeling, Interferometry, Freeform optics, Monochromatic aberrations, Systems modeling, Metrology, Computer generated holography, Ray tracing

Proceedings Article | 5 September 2017 Presentation + Paper
Isaac Trumper, Heejoo Choi
Proceedings Volume 10401, 104010S (2017) https://doi.org/10.1117/12.2272188
KEYWORDS: Deflectometry, Deformable mirrors, Metrology, Motion measurement, Phase shifting, High dynamic range imaging, Dynamical systems, Interferometers

Proceedings Article | 22 August 2017 Presentation + Paper
Proceedings Volume 10377, 103770G (2017) https://doi.org/10.1117/12.2275197
KEYWORDS: Mirrors, Segmented mirrors, Optical alignment, Telescopes, Reflection

Proceedings Article | 15 June 2017 Paper
Proceedings Volume 10326, 103260H (2017) https://doi.org/10.1117/12.2272353
KEYWORDS: Freeform optics, Deformable mirrors, Cameras, Interferometers, Metrology, Data processing, Deflectometry, Optical testing, Interferometry, Phase shifting, Optical components, Precision optics, Optical fabrication, Optical metrology

Proceedings Article | 18 August 2014 Paper
Hee Joo Choi, Jun Yeol Ryu, Myoungsik Cha
Proceedings Volume 9203, 920309 (2014) https://doi.org/10.1117/12.2063280
KEYWORDS: Semiconducting wafers, Refractive index, Crystals, Collimation, Polarization, Refraction, Nonlinear crystals, Interferometry, Transmittance, Optical testing

Proceedings Article | 20 February 2014 Paper
Proceedings Volume 8964, 896418 (2014) https://doi.org/10.1117/12.2039246
KEYWORDS: Diffraction, Lithium niobate, Second-harmonic generation, Diffraction gratings, Error analysis, Tunable lasers, Ions, Neodymium, Frequency conversion, Crystals

Proceedings Article | 3 August 2010 Paper
Hee Joo Choi, Hwan Hong Lim, Han Seb Moon, Tae Bong Eom, Jung Ju, Myoungsik Cha
Proceedings Volume 7790, 77900Z (2010) https://doi.org/10.1117/12.862363
KEYWORDS: Refractive index, Fringe analysis, Refraction, Fabry–Perot interferometers, Interferometry, Silica, Solids, Helium neon lasers, Collimation, Wave plates

Showing 5 of 79 publications
Proceedings Volume Editor (2)

SPIE Conference Volume | 4 October 2024

SPIE Conference Volume | 3 October 2022

Conference Committee Involvement (3)
Optical Manufacturing and Testing 2024
20 August 2024 | San Diego, California, United States
Optical Manufacturing and Testing XIV
22 August 2022 | San Diego, California, United States
Optical Manufacturing and Testing XIII
24 August 2020 | Online Only, California, United States
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