Dr. Ting Shan S. Luk Profile

Dr. Ting Shan S. Luk

Member of Technical Staff at Sandia National Labs

SPIE Involvement:

Author

Publications (29)

Proceedings Article | 6 October 2023 Presentation

All-dielectric metasurfaces for terahertz generation, detection, and manipulation

Hyunseung Jung, Lucy Hale, Jayson Briscoe, Ting Shan Luk, Sadhvikas Addamane, Igal Brener, Oleg Mitrofanov

Proceedings Volume PC12683, PC126830G (2023) https://doi.org/10.1117/12.2681515

KEYWORDS: Design and modelling, Dielectrics, Indium arsenide, Gallium arsenide, Terahertz radiation, Binary data, Zone plates, Ultrafast phenomena, Terahertz technology, Terahertz detection

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Proceedings Article | 4 October 2023 Presentation + Paper

Photoconductive metasurfaces for near-field terahertz sources and detectors

Lucy Hale, Hyunseung Jung, James Seddon, Raktim Sarma, Sylvain Gennaro, Jayson Briscoe, C. Thomas Harris, Ting Shan Luk, Prasad Iyer, Sadhvikas Addamane, John Reno, Igal Brener, Oleg Mitrofanov

Proceedings Volume 12683, 126830C (2023) https://doi.org/10.1117/12.2681721

KEYWORDS: Terahertz radiation, Near field, Near infrared, Microscopy, Terahertz detection, Spatial resolution, Terahertz sources, Near field optics, Signal detection, Electromagnetic metamaterials, Terahertz spectroscopy

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Proceedings Article | 4 October 2023 Presentation

Broadband ultrathin absorber for microbolometer applications

Ting Shan Luk, Guangping Xu, Willard Ross, John Nogan, Ethan Scott, Sergei Ivanov, Oana Niculescu, Oleg Mitrofanov, Charles Harris

Proceedings Volume PC12647, PC126471L (2023) https://doi.org/10.1117/12.2674202

KEYWORDS: Microbolometers, Film thickness, Resonance enhancement, Titanium, Tin, Microfabrication, Dielectrics, Bolometers, Absorption

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Proceedings Article | 4 October 2023 Presentation

Enhancing semiconductor quantum dot emission with electric and magnetic dipole modes in Mie metasurfaces

Samuel Prescott, Prasad Iyer, Hyunseung Jung, Ting Shan Luk, Jacob Henshaw, Andrew Mounce, Sadhvikas Addamane, Igal Brener, Oleg Mitrofanov

Proceedings Volume PC12646, PC1264615 (2023) https://doi.org/10.1117/12.2677377

KEYWORDS: Semiconductor quantum dots, Quantum dot emission, Quantum enhancement, Magnetism, Quantum dots, Quantum systems, Photoluminescence, Spectroscopy, Semiconductors, Resonators

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Proceedings Article | 13 June 2023 Presentation + Paper

Fabrication of optically transparent millimeter-wave micromesh structures

Jacqueline van Zyl, Zachary Silva, Ting Luk, Christopher Valenta

Proceedings Volume 12540, 1254006 (2023) https://doi.org/10.1117/12.2663617

KEYWORDS: Fabrication, Design and modelling, Antennas, Transmittance, Optical transmission, Electrical conductivity, Copper, Etching, Transparent conductors, Maskless lithography

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Proceedings Article | 12 June 2023 Presentation

Maximal absorption of ultrathin TiN absorber film for microbolometer applications (Conference Presentation)

Ting Shan Luk, Thomas Harris, Oleg Mitrofanov, Ethan Scott, Guangping Xu, Willard Ross, John Nogan, Sergei Ivanov, Oana Niculescu

Proceedings Volume 12536, 125360R (2023) https://doi.org/10.1117/12.2665978

KEYWORDS: Tin, Bolometers, Absorption, Microbolometers, Long wavelength infrared, Thermography, Sensors, Infrared sensors, Silicon, Sensor performance

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Proceedings Article | 22 May 2023 Presentation + Paper

Ultra-uniform diffraction patterns in meshed optically transparent antennas

Zachary Silva, Jacqueline Van Zyl, Ting Shan Luk, Christopher Valenta

Proceedings Volume 12327, 123270V (2023) https://doi.org/10.1117/12.2645123

KEYWORDS: Diffraction, Point spread functions, Modulation transfer functions, Transmittance, Antennas, Diffraction gratings, Optical gratings, Electrical conductivity, Transparency, Signal to noise ratio

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Proceedings Article | 4 August 2021 Presentation

Controlling light-matter interactions in two-dimensional quantum materials with metasurfaces

Long Yuan, Jeeyoon Jeong, Prashant Padmanabhan, Kevin W. Kwock, Ting Shan Luk, P. James Schuck, Dmitry Yarotski, Igal Brener, Rohit Prasankumar

Proceedings Volume 11796, 1179606 (2021) https://doi.org/10.1117/12.2593974

KEYWORDS: Light-matter interactions, Terahertz spectroscopy, Terahertz radiation, Graphene, Excitons, Ultrafast phenomena, Transition metals, Spectroscopes, Semiconductors, Metamaterials

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Proceedings Article | 1 August 2021 Presentation

Low power requirement photoconductive antenna detectors based on a perfectly absorbing metasurfaces

Lucy Hale, Charles Harris, Ting Shan Luk, Sadhvikas Addamane, John Reno, Igal Brener, Oleg Mitrofanov

Proceedings Volume 11827, 118270P (2021) https://doi.org/10.1117/12.2596140

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Proceedings Article | 1 August 2021 Presentation

Perfectly absorbing photoconductive metasurfaces for terahertz applications

Lucy Hale, Polina Vabishchevich, Charles Harris, Ting Shan Luk, Sadhvikas Addamane, John Reno, Igal Brener, Oleg Mitrofanov

Proceedings Volume 11795, 117951Z (2021) https://doi.org/10.1117/12.2596141

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Proceedings Article | 5 March 2021 Presentation

Tuning and tailoring of the optical properties of transparent conducting oxides for dynamic nanophotonic applications

Soham Saha, Michael Wood, Benjamin Diroll, Aveek Dutta, Clayton DeVault, Joshua Shank, Salvatore Campione, Ting Shan Luk, Richard Schaller, Zhaxylyk Kudyshev, Sarah Chowdhury, Xiaohui Xu, Alexander Kildishev, Vladimir Shalaev, Alexandra Boltasseva

Proceedings Volume 11684, 116840U (2021) https://doi.org/10.1117/12.2582479

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Proceedings Article | 20 August 2020 Presentation + Paper

Near-field probing of strong light-matter coupling in single IR antennae

O. Mitrofanov, C.-F. Wang, T. Habteyes, T. S. Luk, J. Klem, I. Brener, H.-T. Chen

Proceedings Volume 11499, 114990A (2020) https://doi.org/10.1117/12.2568033

KEYWORDS: Antennas, Quantum wells, Polaritons, Near field, Nanoantennas, Spectroscopy, Microscopes, Quantum cascade lasers

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Proceedings Article | 10 March 2020 Presentation

Broadband high-speed and large-amplitude all-optical switching with cadmium oxide (Conference Presentation)

Soham Saha, Benjamin Diroll, Joshua Shank, Zhaxylyk Kudyshev, Aveek Dutta, Sarah Chowdhury, Ting Luk, Salvadore Campione, Richard Shaller, Vladimir Shalaev, Michael Wood, Alexandra Boltasseva

Proceedings Volume 11281, 1128123 (2020) https://doi.org/10.1117/12.2560073

KEYWORDS: Oxides, Cadmium, Switching, Mid-IR, Plasmonics, Optical properties, Modulators, Switches, Yttrium, Doping

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Proceedings Article | 16 February 2020 Presentation + Paper

Nonpolar GaN-based VCSELs with lattice-matched nanoporous distributed Bragg reflector mirrors

Saadat Mishkat-Ul-Masabih, Andrew Aragon, Morteza Monavarian, Ting Luk, Daniel Feezell

Proceedings Volume 11280, 112800I (2020) https://doi.org/10.1117/12.2545030

KEYWORDS: Vertical cavity surface emitting lasers, Quantum wells, Gallium nitride, Resistance, Refractive index, Etching, Reflectivity, Dielectrics, Semiconducting wafers, Distributed Bragg reflectors

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Proceedings Article | 9 September 2019 Presentation

Engineering perfect absorption in all-dielectric photoconductive metasurfaces (Conference Presentation)

Oleg Mitrofanov, Thomas Siday, Polina Vabishchevich, Lucy Hale, Thomas Harris, Ting Shan Luk, John Reno, Igal Brener

Proceedings Volume 11080, 110802Q (2019) https://doi.org/10.1117/12.2529419

KEYWORDS: Absorption, Resonators, Magnetism, Photonic devices, Optoelectronics, Switches, Sensors, Modulators, Gallium arsenide, Numerical simulations

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Proceedings Article | 9 September 2019 Presentation

High-harmonic generation from an epsilon-near-zero material (Conference Presentation)

Yuanmu Yang, Jian Lu, Alejandro Manjavacas, Ting Shan Luk, Hanzhe Liu, Kyle Kelley, Jon-Paul Maria, Michael Sinclair, Evan Runnerstrom, Shambhu Ghimire, Igal Brener

Proceedings Volume 11080, 110800D (2019) https://doi.org/10.1117/12.2537655

KEYWORDS: Solid state physics, Extreme ultraviolet, Light sources, Ultraviolet radiation, Chemical species, Solids, Absorption, Cadmium, Oxides, Nanophotonics

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Proceedings Article | 6 September 2019 Presentation + Paper

Terahertz detectors based on all-dielectric photoconductive metasurfaces

Oleg Mitrofanov, Thomas Siday, Polina Vabishchevich, Lucy Hale, Charles Thomas Harris, Ting Shan Luk, John Reno, Igal Brener

Proceedings Volume 11124, 1112410 (2019) https://doi.org/10.1117/12.2529393

KEYWORDS: Terahertz radiation, Sensors, Absorption, Gallium arsenide, Photons, Resonators, Switching, Plasmonics, Millimeter wave sensors, Nanostructures

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Proceedings Article | 4 March 2019 Presentation

Improving efficiency of photoconductive terahertz detectors using all-dielectric optical metasurfaces (Conference Presentation)

Oleg Mitrofanov, Thomas Siday, Robert Thompson, Ting Shan Luk, Igal Brener, John Reno

Proceedings Volume 10922, 109220G (2019) https://doi.org/10.1117/12.2511142

KEYWORDS: Terahertz radiation, Sensors, Millimeter wave sensors, Near field optics, Plasmonics, Imaging spectroscopy, Switches, Nanostructures, Absorption, Channel projecting optics

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Detection of terahertz (THz) radiation with high sensitivity and efficiency remains a challenging problem for THz technology development. A photoconductive THz detector based on the Auston switch concept is among the most sensitive and widely-used room-temperature coherent THz detectors. Plasmonic nano-antennas and gratings, and ultrathin optical cavities recently were introduced in the structure of THz optoelectronic devices to improve their efficiencies. It allowed obtaining higher photocurrents and smaller capacitance, which lead to improvements in the response speed and efficiency of THz detectors. Plasmonic nanostructures however introduce Ohmic losses, which can substantially reduce the responsivity of THz detectors. Alternatively, efficiency of photoconductive THz detectors can be enhanced by using all-dielectric metasurfaces. A metasurface containing only dielectric, instead of plasmonic nanostructures, can be designed to trap the incident light in a selected spectral range and thus enhance optical absorption. We designed an optically-thin photoconductive channel as an all-dielectric metasurface, which exhibited enhanced optical absorption at laser excitation wavelength. The metasurface comprised an array of low-temperature grown GaAs nanobeams and a sub-surface distributed Bragg reflector. Integrated into a photoconductive (Auston) switch, the metasurface improved the efficiency and sensitivity of the THz detector. Specifically, the detector produced photocurrents over one order of magnitude higher compared to a similar detector with unstructured surface with only 0.5 mW of optical excitation, while exhibiting high dark resistance required for low-noise detection in THz time-domain spectroscopy and imaging. At that level of optical excitation the metasurface detector showed a high signal to noise ratio of 10^6. We will discuss mechanisms responsible for the efficiency improvement, as well as the application of THz detectors with all-dielectric metasurfaces for enabling more sensitive integrated THz near-field probes.

Proceedings Article | 23 February 2018 Presentation + Paper

An efficient terahertz detector based on an optical hybrid cavity

Thomas Siday, Robert Thompson, Samuel Glass, Ting-Shan Luk, John Reno, Igal Brener, Oleg Mitrofanov

Proceedings Volume 10531, 1053109 (2018) https://doi.org/10.1117/12.2290971

KEYWORDS: Nanoantennas, Terahertz radiation, Reflectivity, Gallium arsenide, Absorption, Sensors, Hybrid optics, Cavity resonators, Photonic nanostructures

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SPIE Journal Paper | 27 September 2017 Open Access

Special Section Guest Editorial: Nanoplasmonics for Biosensing and Enhanced Light-Matter Interaction

Junpeng Guo, Joshua Hendrickson, Ting Luk

JNP, Vol. 12, Issue 01, 012501, (September 2017) https://doi.org/10.1117/12.10.1117/1.JNP.12.012501

KEYWORDS: Biosensing, Light-matter interactions, Nanoplasmonics, Analytical research, Nanotechnology, Plasmonics, Nanostructures, Sensors, Free space optics, Gold

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Proceedings Article | 9 November 2016 Presentation

Tailored absorption/emission from epsilon-near-zero materials (Conference Presentation)

Ting Luk

Proceedings Volume 9920, 992006 (2016) https://doi.org/10.1117/12.2237316

KEYWORDS: Photovoltaics, Optical components, Semiconductors, Indium, Tin, Oxides, Mid-IR, Superlattices, Quantum wells, Current controlled current source

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Proceedings Article | 1 September 2015 Paper

A polarization system for persistent chemical detection

Julia Craven-Jones, Leah Appelhans, Eric Couphos, Todd Embree, Patrick Finnegan, Dennis Goldstein, David Karelitz, Charles LaCasse, Ting Luk, Adoum Mahamat, Lee Massey, Anthony Rynes, Cody Washburn, Steven Vigil

Proceedings Volume 9613, 96130B (2015) https://doi.org/10.1117/12.2188718

KEYWORDS: Polarization, Polarimetry, Signal to noise ratio, Prototyping, Sensors, Chemical analysis, Humidity, Chemical detection, Coating, Titanium dioxide

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Proceedings Article | 31 August 2015 Paper

Plasmonic enhancement of sensitivity in terahertz (THz) photo-conductive detectors

Oleg Mitrofanov, Ting Shan Luk, Igal Brener, John Reno

Proceedings Volume 9585, 95850N (2015) https://doi.org/10.1117/12.2188177

KEYWORDS: Terahertz radiation, Sensors, Gallium arsenide, Plasmonics, Near field optics, Near field, Spatial resolution, Antennas, Absorption, Electrodes

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Proceedings Article | 6 February 2012 Paper

Top-down fabrication of GaN-based nanorod LEDs and lasers

George Wang, Qiming Li, Jonathan Wierer, Jeffrey Figiel, Jeremy Wright, Ting S. Luk, Igal Brener

Proceedings Volume 8278, 827816 (2012) https://doi.org/10.1117/12.909377

KEYWORDS: Light emitting diodes, Gallium nitride, Etching, Nanolithography, Wet etching, Plasma etching, Heterojunctions, Anisotropic etching, Nanorods, Nanowires

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Proceedings Article | 11 September 2006 Paper

Complete three dimensional gap photonic crystals in the near infrared and visible wavelengths for sensing applications

G. Subramania, Y. Lee, J. Verley, J. Fleming, I. El-Kady, T. Luk, P. Clem, I. Brener

Proceedings Volume 6322, 632204 (2006) https://doi.org/10.1117/12.682490

KEYWORDS: Photonic crystals, Silicon, Optical microcavities, Tungsten, Etching, Electron beams, Gold, Reflectivity, Sensors, Oxides

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SPIE Journal Paper | 1 May 2005

Direct-write embedded waveguides and integrated optics in bulk glass by femtosecond laser pulses

Pin Yang, Junpeng Guo, George Burns, Ting-Shan Luk

OE, Vol. 44, Issue 05, 051104, (May 2005) https://doi.org/10.1117/12.10.1117/1.1915447

KEYWORDS: Waveguides, Glasses, Birefringence, Femtosecond phenomena, Integrated optics, Pulsed laser operation, Silica, Refractive index, Laser processing, Light scattering

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Proceedings Article | 30 December 2003 Paper

Direct-write waveguides and structural modification by femtosecond laser pulses

Pin Yang, George Burns, David Tallant, Junpeng Guo, Ting Shan Luk

Proceedings Volume 5342, (2003) https://doi.org/10.1117/12.524437

KEYWORDS: Glasses, Femtosecond phenomena, Waveguides, Raman spectroscopy, Birefringence, Silica, Refractive index, Absorption, Polarization, Pulsed laser operation

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Proceedings Article | 5 February 1992 Paper

Relativistic and charge-displacement self-channeling of intense short-duration laser pulses in plasmas

Alexey Borisov, A. Borovskiy, O. Shiryaev, Vladlen Korobkin, Alexander Prokhorov, Johndale Solem, Ting-Shan Luk, Keith Boyer, Charles Rhodes

Proceedings Volume 1551, (1992) https://doi.org/10.1117/12.134824

KEYWORDS: Plasmas, Wave propagation, Rutherfordium, Radio propagation, Refraction, Ionization, Pulsed laser operation, Wavefronts, Diffraction, Refractive index

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Proceedings Article | 5 February 1992 Paper

Studies of plasmas excited by intense subpicosecond radiation for x-ray generation (Review Paper)

Arie Zigler, Philip Burkhalter, David Nagel, Johndale Solem, Keith Boyer, Ting-Shan Luk, L. Armon McPherson, D. Tate, Charles Rhodes

Proceedings Volume 1551, (1992) https://doi.org/10.1117/12.134820

KEYWORDS: Solids, Plasmas, Ultraviolet radiation, Magnesium fluoride, Laser induced fluorescence, Information operations, Coded apertures, Silicon, Magnesium, Amplifiers

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Showing 5 of 29 publications

Proceedings Volume Editor (1)

SPIE Conference Volume | 11 March 1987

Excimer Lasers and Optics

Conference Committee Involvement (1)

Excimer Lasers and Optics

18 August 1986 | Cambridge, MA, United States

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