Prof. Andrew M. Sarangan Profile

Prof. Andrew M. Sarangan

Professor at Univ of Dayton

SPIE Involvement:

Conference Program Committee | Author | Instructor

Publications (45)

Proceedings Article | 5 June 2024 Presentation + Paper

Characterization of discrete amplification photon detector (DAPD) for long-range LiDAR applications

Ming Wei, Cullen Bradley, Anna Gnacek, Andrew Sarangan, Paul McManamon

Proceedings Volume 13049, 130490M (2024) https://doi.org/10.1117/12.3013526

KEYWORDS: Sensors, LIDAR, Signal detection, Photodetectors, Background noise, Dark current, Avalanche photodetectors, Pulse signals, Pulsed laser operation, Negative feedback

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Proceedings Article | 3 October 2023 Poster + Paper

Deposition and characterization of distributed Bragg feedback resonant-cavities with complex index active layers

Angelica Drees, Peter Stevensen, Andrew Sarangan

Proceedings Volume 12653, 126530L (2023) https://doi.org/10.1117/12.2681693

KEYWORDS: Gold, Design and modelling, Reflection, Multilayers, Film thickness, Reflectors, Phase compensation, Refractive index, Spectral response, Metals

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Proceedings Article | 3 October 2023 Presentation + Paper

Single-shot spectroscopy using continuously variable filters

Roseanna Lawandi, Zhanibek Bolatbek, Imad Agha, Keigo Hirakawa, Andrew Sarangan

Proceedings Volume 12653, 1265307 (2023) https://doi.org/10.1117/12.2681657

KEYWORDS: Tunable filters, Signal filtering, Optical filters, Film thickness, Detector arrays, Spectroscopy, Fabrication, Dielectric filters, Linear filtering, Fabry–Perot interferometers

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Proceedings Article | 15 June 2023 Poster

A Tunable transmission filter using Phase Change Materials (PCM) for smart IR night vision applications

Remona Heenkenda, Keigo Hirakawa, Andrew Sarangan

Proceedings Volume 12514, 125140I (2023) https://doi.org/10.1117/12.2670243

KEYWORDS: Tunable filters, Optical filters, Night vision, Industrial applications, Near infrared, Infrared imaging, Visible radiation, Silicon, Design and modelling, Titanium dioxide

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Proceedings Article | 1 February 2023 Paper

Reconfigurable opto-chirality enabled by chalcogenide phase change nanomaterials

Joshua Burrow, Kimani Toussaint, Andrew Sarangan, Imad Agha

Proceedings Volume 12477, 1247708 (2023) https://doi.org/10.1117/12.2645974

KEYWORDS: Nanomaterials, Switching, Nanofabrication, Metamaterials, Chalcogenides

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Proceedings Article | 1 February 2023 Paper

Design principles of tunable optical filters using phase change materials

Remona Heenkenda, Andrew Sarangan

Proceedings Volume 12477, 124770N (2023) https://doi.org/10.1117/12.2647782

KEYWORDS: Refractive index, Optical filters, Crystals, Tunable filters, Signal attenuation, Germanium, Amplifiers, Tellurium, Optical design, Antimony

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SPIE Journal Paper | 9 February 2022

Dark electron tunneling current in metal–insulator–metal structures: modeling, fabrication, and measurement

Shuo Sun, Roseanna Lawandi, Andrew Sarangan, Partha Banerjee

OE, Vol. 61, Issue 02, 027101, (February 2022) https://doi.org/10.1117/12.10.1117/1.OE.61.2.027101

KEYWORDS: Metals, Diodes, Nanorods, Dielectrics, Optical engineering, Photodiodes, Gold, Photodetectors, Sun, Electrodes

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Proceedings Article | 21 August 2020 Presentation

Spectroscopy using tunable liquid crystal Fourier filters

Roseanna Lawandi, Keigo Hirakawa, Andrew Sarangan

Proceedings Volume 11467, 114670O (2020) https://doi.org/10.1117/12.2567658

KEYWORDS: Liquid crystals, Optical filters, Spectroscopy, Tunable filters, Dielectric filters, Photodetectors, Dielectrics, Electronic filtering, Fabrication, Thin films

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Proceedings Article | 6 December 2019 Paper

Novel synthesis and design methods of optical thin film structures using vanadium dioxide phase change material

Andrew Sarangan

Proceedings Volume 11371, 1137109 (2019) https://doi.org/10.1117/12.2535617

KEYWORDS: Vanadium, Sapphire, Thin films, Reflectivity, Thermal oxidation, Refractive index, Optical design, Polarizers, Thin film devices, Optical lithography

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Proceedings Article | 9 September 2019 Presentation

Design and fabrication of photonic systems using phase change materials (Conference Presentation)

Andrew Sarangan

Proceedings Volume 11081, 1108105 (2019) https://doi.org/10.1117/12.2529812

KEYWORDS: Photonics systems, Optical recording, Chalcogenide glass, Germanium, Tellurium, Antimony, Selenium, Silver, Oxides, Vanadium

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Proceedings Article | 3 September 2019 Presentation + Paper

Computational and experimental development of 2D anisotropic photonic crystal metamaterials

James Ethridge, Michael Marciniak, Andrew Sarangan

Proceedings Volume 11089, 110890T (2019) https://doi.org/10.1117/12.2529654

KEYWORDS: Metamaterials, Photonic crystals, Nanorods, Ellipsometry, Chromium, Polarization, Scanning electron microscopy, Refraction, Optical properties, Data modeling

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Proceedings Article | 3 September 2019 Presentation + Paper

Fabrication of integrated single-chip Fourier spectrometers

Roseanna Lawandi, Keigo Hirakawa, Partha Banerjee, Andrew Sarangan

Proceedings Volume 11089, 110890V (2019) https://doi.org/10.1117/12.2529798

KEYWORDS: Photodetectors, Sensors, Silicon, Optical filters, Spectrometers, Optical lithography, Dielectrics

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Proceedings Article | 19 September 2018 Presentation + Paper

Electrical and optical properties of nickel-doped Ge2Sb2Te5 films produced by magnetron co-sputtering

Pengfei Guo, Gary Sevison, Joshua Burrow, Imad Agha, Andrew Sarangan

Proceedings Volume 10730, 107300L (2018) https://doi.org/10.1117/12.2320843

KEYWORDS: Nickel, Crystals, Raman spectroscopy, Tellurium, Doping, Refractive index, Germanium, Antimony, Optical properties, Thin films

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Proceedings Article | 31 August 2017 Presentation + Paper

Vanadium dioxide switchable components based on wiregrids for mid-infrared applications

Pengfei Guo, David Lombardo, Andrew Sarangan

Proceedings Volume 10354, 1035411 (2017) https://doi.org/10.1117/12.2272758

KEYWORDS: Refractive index, Mid-IR, Lithography, Polarizers

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SPIE Journal Paper | 1 February 2017 Open Access

Fabrication of ultrahigh aspect ratio silicon nanostructures using self-assembled gold metal-assisted chemical etching

Joshua Duran, Andrew Sarangan

JM3, Vol. 16, Issue 01, 014502, (February 2017) https://doi.org/10.1117/12.10.1117/1.JMM.16.1.014502

KEYWORDS: Metals, Etching, Silicon, Nanostructures, Gold, Nanolithography, Scanning electron microscopy, Anisotropy, Wet etching, Oxides

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Proceedings Article | 26 September 2016 Presentation + Paper

Design and fabrication of Fourier spectral filter array for multispectral imaging

Chuan Ni, Jie Jia, Keigo Hirakawa, Andrew Sarangan

Proceedings Volume 9927, 99270W (2016) https://doi.org/10.1117/12.2238864

KEYWORDS: Multispectral imaging, Optical filters, Image filtering, Imaging arrays, RGB color model, Transmittance, Photomasks, Zinc, Photoresist materials, Image sensors

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Proceedings Article | 15 September 2016 Paper

Ion-assisted evaporation of vanadium dioxide thin films

Mengyang Zou, Chuan Ni, Andrew Sarangan

Proceedings Volume 9927, 99271Q (2016) https://doi.org/10.1117/12.2238491

KEYWORDS: Thin films, Oxygen, Vanadium, Crystals, Semiconductors, Temperature metrology, Ions, Silicon films, Resistance, Photonics

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Proceedings Article | 15 September 2016 Presentation + Paper

Silicon nanowire photodetectors made by metal-assisted chemical etching

Ying Xu, Chuan Ni, Andrew Sarangan

Proceedings Volume 9927, 992707 (2016) https://doi.org/10.1117/12.2238480

KEYWORDS: Silicon, Sensors, Diffusion, Photodetectors, Nanowires, Etching, Wet etching, Metals, Antireflective coatings, Gold

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Proceedings Article | 27 April 2016 Paper

Effective chiral behavior on self-assembled tilted gold nanowires metasurface by means of linear and nonlinear optical techniques

A. Belardini, G. Leahu, M. Centini, R. Li Voti, E. Fazio, C. Sibilia, Joseph Haus, Andrew Sarangan, D. Hooper, V. Valev

Proceedings Volume 9894, 98941V (2016) https://doi.org/10.1117/12.2230382

KEYWORDS: Nanowires, Harmonic generation, Gold, Metamaterials, Silicon, Dichroic materials, Optical testing, Reflectivity, Absorbance, Temperature metrology, Nanostructures, Second-harmonic generation, Polarization, Photoacoustic spectroscopy

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Proceedings Article | 1 April 2016 Paper

Deep-UV interference lithography combined with masked contact lithography for pixel wiregrid patterns

David Lombardo, Piyush Shah, Pengfei Guo, Andrew Sarangan

Proceedings Volume 9777, 97771N (2016) https://doi.org/10.1117/12.2219484

KEYWORDS: Lithography, Deep ultraviolet, Aluminum, Polarizers, Molybdenum, Polarimetry, Polarization, Semiconducting wafers, Interferometry, Imaging systems, Metals, Etching, Optical lithography, Dielectrics, Mirrors

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Proceedings Article | 20 August 2015 Presentation + Paper

Design and fabrication of sinusoidal spectral filters for multispectral imaging

Chuan Ni, Jie Jia, Keigo Hirakawa, Andrew Sarangan

Proceedings Volume 9556, 95560I (2015) https://doi.org/10.1117/12.2188830

KEYWORDS: Optical filters, Multispectral imaging, Zinc, Fabry–Perot interferometers, Refractive index, Manufacturing, Image filtering, Reflectivity, Sputter deposition, Design for manufacturability

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Proceedings Article | 19 May 2015 Paper

Symmetry breaking in the second harmonic field of self-assembled metallic nanostructures

A. Belardini, A. Benedetti, M. Centini, E. Fazio, M. Bertolotti, C. Sibilia, Joseph Haus, Andrew Sarangan

Proceedings Volume 9502, 950206 (2015) https://doi.org/10.1117/12.2182759

KEYWORDS: Nanostructures, Gold, Harmonic generation, Second-harmonic generation, Optical testing, Silicon, Polarization, Dichroic materials, Mirrors, Nanowires

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Proceedings Article | 10 September 2014 Paper

Nano-scale patterns of molybdenum on glass substrate for use in super-resolution imaging with metamaterials

H. Li, A. Sarangan, G. Rui, J. Hu, P. Banerjee

Proceedings Volume 9163, 91631D (2014) https://doi.org/10.1117/12.2063102

KEYWORDS: Metamaterials, Molybdenum, Super resolution, Glasses, Photomasks, Photoresist materials, Deep ultraviolet, Optical lithography, Diffraction, Ion beams

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Proceedings Article | 28 August 2014 Paper

Nanoimprint fabrication of wiregrids micro-polarizers in near infrared spectra using SU-8 as an intermediate film

Junxin Wang, Andrew Sarangan

Proceedings Volume 9170, 917010 (2014) https://doi.org/10.1117/12.2061230

KEYWORDS: Silicon, Nanoimprint lithography, Polarizers, Lithography, Nanolithography, Scanning electron microscopy, Aluminum, Near infrared, Deep ultraviolet, Optical testing

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Proceedings Article | 28 August 2014 Paper

Effects of different wetting layers on the growth of smooth ultra-thin silver thin films

Chuan Ni, Piyush Shah, Andrew Sarangan

Proceedings Volume 9170, 91700L (2014) https://doi.org/10.1117/12.2061256

KEYWORDS: Silver, Copper, Reflectivity, Germanium, Zinc, Reflection, Thin films, Scanning electron microscopy, Metals, Optical coatings

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SPIE Journal Paper | 16 December 2013 Open Access

Nanoimprint lithography of deoxyribonucleic acid biopolymer films

Emily Fehrman-Cory, Roberto Aga, Jack Lombardi, Carrie Bartsch, Andrew Sarangan, Emily Heckman

JM3, Vol. 12, Issue 04, 040501, (December 2013) https://doi.org/10.1117/12.10.1117/1.JMM.12.4.040501

KEYWORDS: Nanoimprint lithography, Biopolymers, Waveguides, Silicon, Polymers, Coating, Fabrication, Optical lithography, Cladding, Gold

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Proceedings Article | 3 May 2013 Paper

Coherent super-position of multiple beams in a large mode area fiber

Joseph Haus, Long Wang, Peter Powers, Andrew Sarangan

Proceedings Volume 8775, 87750G (2013) https://doi.org/10.1117/12.2018765

KEYWORDS: Multimode fibers, Gaussian beams, Fiber lasers, Reflectors, Optical fibers, Optical simulations, Beam propagation method, Glasses, Metals, Objectives

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Proceedings Article | 11 April 2013 Paper

Plasmonic gradient structures of nanoparticle arrays for optical sensing applications

Susan Derenko, Roland Wuchrer, Andrew Sarangan, Christiane Schuster, Thomas Härtling

Proceedings Volume 8693, 869305 (2013) https://doi.org/10.1117/12.2008954

KEYWORDS: Nanoparticles, Refractive index, Plasmonics, Sensors, Particles, Gold, Water, Lithography, Surface plasmons, Light sources

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Proceedings Article | 5 March 2013 Paper

Tapered optical fibers for aqueous and gaseous phase biosensing applications

Branden King, Ighodalo Idehenre, Peter Powers, Andrew Sarangan, Joseph Haus, Karolyn Hansen

Proceedings Volume 8570, 85700G (2013) https://doi.org/10.1117/12.2004799

KEYWORDS: Optical fibers, Tapered optical fibers, Biosensing, Refractive index, Cladding, Sensors, Light wave propagation, Radio propagation, Silicon, Single mode fibers

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Proceedings Article | 21 January 2012 Paper

Binary nanoparticle dispersed metamaterial implementation and characterization

P. Banerjee, R. Aylo, G. Nehmetallah, H. Li, A. Sarangan, P. Powers

Proceedings Volume 8268, 826805 (2012) https://doi.org/10.1117/12.915689

KEYWORDS: Silver, Nanoparticles, Glasses, Metamaterials, Polarization, Water, Super resolution, Lenses, Prisms, Silicon carbide

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Proceedings Article | 27 September 2011 Paper

Broadband, tunable super-lenses in the visible region of the electromagnetic spectrum with metallodielectric stacks (MDS)

Nkorni Katte, Jian Gao, Andrew Sarangan, Joseph Haus, Michael Scalora, Rachel Jakubiak

Proceedings Volume 8096, 80963E (2011) https://doi.org/10.1117/12.894164

KEYWORDS: Finite element methods, Super resolution, Dielectrics, Silver, Metals, Diffraction, Gaussian beams, Visible radiation, Refractive index, Wave propagation

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Proceedings Article | 21 September 2011 Paper

Fabrication and characterization of long range surface plasmon devices based on metallic subwavelength gratings

Zhi Wu, Andrew Sarangan, Qiwen Zhan

Proceedings Volume 8096, 80962L (2011) https://doi.org/10.1117/12.893133

KEYWORDS: Gold, Surface plasmons, Mirrors, Deep ultraviolet, Thin films, Refractive index, Lithography, Prisms, Semiconducting wafers, Beam shaping

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Proceedings Article | 10 September 2011 Paper

Z-scan simulations on metallodielectric stacks with nonlinear absorption

Nkorni Katte, Joseph Haus, Peter Powers, Andrew Sarangan, Jian Gao, Michael Scalora

Proceedings Volume 8093, 80930J (2011) https://doi.org/10.1117/12.894130

KEYWORDS: Finite element methods, Absorption, Copper, Metals, Silver, Transmittance, Zinc, Gold, Dielectrics, Titanium dioxide

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SPIE Journal Paper | 1 April 2011

Fabrication of sloped sidewalls by inductively coupled plasma etching for silicon micro-optic structures

Lirong Sun, Andrew Sarangan

JM3, Vol. 10, Issue 02, 023006, (April 2011) https://doi.org/10.1117/12.10.1117/1.3574136

KEYWORDS: Etching, Silicon, Reactive ion etching, Plasma, Polymers, Ions, Micro optics, Plasma etching, Scanning electron microscopy, Polymer thin films

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Proceedings Article | 29 August 2008 Paper

Design and fabrication of an omnidirectional reflector as ultra-sensitive biochemical sensing platform

Jian Gao, Agus Widjaja, Mengshu Pan, Andrew Sarangan, Qiwen Zhan

Proceedings Volume 7035, 70350W (2008) https://doi.org/10.1117/12.793160

KEYWORDS: Luminescence, Reflectors, Multilayers, Thin films, Refractive index, Reflection, Sputter deposition, Biosensing, Molecules, Silica

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Proceedings Article | 30 April 2008 Paper

Wiregrid micro-polarizers for mid-infrared applications

Andrew Sarangan, Aziz Mahfoud, Zhi Wu, Qiwen Zhan, David Forrai, Darrel Endres, John Devitt, Robert Mack, James Harris

Proceedings Volume 6959, 695915 (2008) https://doi.org/10.1117/12.778028

KEYWORDS: Silicon, Metals, Lithography, Silica, Mid-IR, Aluminum, Staring arrays, Deep ultraviolet, Polarization, Polarizers

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Proceedings Article | 12 September 2007 Paper

Development of a MWIR polarimetric FPA

David Forrai, Darrel Endres, John Devitt, Andrew Sarangan, Qiwen Zhan, Aziz Mahfoud-Familia, Robert Mack, James Harris

Proceedings Volume 6660, 666007 (2007) https://doi.org/10.1117/12.737777

KEYWORDS: Staring arrays, Polarimetry, Mid-IR, Sensors, Optical filters, Semiconducting wafers, Cameras, Metals, Deep ultraviolet, Short wave infrared radiation

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Proceedings Article | 24 February 2006 Paper

Enhanced Cerenkov second-harmonic generation in patterned lithium niobate

Cong Deng, Joseph Haus, Andrew Sarangan, Aziz Mahfoud, Concita Sibilia, Michael Scalora, Aleksei Zheltikov

Proceedings Volume 6123, 61230N (2006) https://doi.org/10.1117/12.646952

KEYWORDS: Second-harmonic generation, Waveguides, Lithium niobate, Refractive index, Resonance enhancement, Waveguide modes, Nonlinear optics, Crystals, Photonic crystals, Phase matching

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Proceedings Article | 23 February 2006 Paper

Photoluminescence and amplified spontaneous emission studies of [2- methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene] in solution and films

Aziz Mahfoud Familia, Andrew Sarangan, Thomas Nelson, Elmo Blubaugh

Proceedings Volume 6117, 61170P (2006) https://doi.org/10.1117/12.644809

KEYWORDS: Polymers, Polymer thin films, Luminescence, Thin films, Crystals, Absorption, Nd:YAG lasers, Light emitting diodes, Spectroscopy, Ultraviolet radiation

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SPIE Journal Paper | 1 April 2005

Influence of shadow mask design and deposition methods on nonplanar dielectric material deposition

Sarah Blickenstaff, Andrew Sarangan, Thomas Nelson, Kevin Leedy, Donald Agresta

JM3, Vol. 4, Issue 02, 023015, (April 2005) https://doi.org/10.1117/12.10.1117/1.1897381

KEYWORDS: Microlens, Nickel, Plasma enhanced chemical vapor deposition, Deposition processes, Dielectrics, Photomasks, Sputter deposition, Aspheric lenses, Light emitting diodes, Silicon

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Proceedings Article | 1 August 2002 Paper

Angled grating high-power semiconductor lasers: simulation of beam characteristics under thermal effects

Andrew Sarangan

Proceedings Volume 4732, (2002) https://doi.org/10.1117/12.477416

KEYWORDS: High power lasers, Semiconductor lasers, Diffraction gratings, Fabry–Perot interferometers, Wave propagation, Laser damage threshold, Optical simulations, Thermal effects, Optical filters, Signal attenuation

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Proceedings Article | 24 April 2001 Paper

Performance and design considerations of angled-grating semiconductor lasers

John Marciante, Andrew Sarangan, David Bossert

Proceedings Volume 4270, (2001) https://doi.org/10.1117/12.424668

KEYWORDS: Semiconductor lasers, Diffraction gratings, Laser damage threshold, Optical filters, Thermal effects, Computer aided design, Laser resonators, Near field optics, Fabry–Perot interferometers, Geometrical optics

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Proceedings Article | 3 April 2000 Paper

Theory of angled grating semiconductor lasers: comparison of an analytical model and BPM simulation

Marek Osinski, William Thompson, Andrew Sarangan, Alexander Bogatov

Proceedings Volume 3889, (2000) https://doi.org/10.1117/12.380852

KEYWORDS: Semiconductor lasers, Beam propagation method, Diffraction gratings, Wave propagation, Refractive index, Analytical research, Optical simulations, Anisotropy, Nonlinear optics, Diffraction

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Proceedings Article | 6 June 1997 Paper

Spectral domain modeling of distributed feedback lasers

Andrew Sarangan, Wei-Ping Huang, Toshi Makino

Proceedings Volume 2994, (1997) https://doi.org/10.1117/12.275622

KEYWORDS: Spectral models, Waveguides, Refractive index, Chemical elements, Laser resonators, Wave propagation, Optical components, Light, Curium, Phase matching

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Proceedings Article | 1 May 1996 Paper

Three-dimensional analysis of multiwavelength DFB laser arrays

Andrew Sarangan, Guo Li, W. Huang, Toshi Makino

Proceedings Volume 2690, (1996) https://doi.org/10.1117/12.238924

KEYWORDS: Waveguides, Laser applications, 3D modeling, Tunable lasers, Silicon, Waveguide lasers, Instrument modeling, Lithium, Wavelength division multiplexing, Superposition

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Showing 5 of 45 publications

Conference Committee Involvement (8)

Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XXI

20 August 2024 | San Diego, California, United States

Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XX

20 August 2023 | San Diego, California, United States

Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XIX

21 August 2022 | San Diego, California, United States

International Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors 2019

24 June 2019 | Reykjavik, Iceland

International Symposium on Photonics and Optoelectronics 2014

22 August 2014 | Suzhou, China

Showing 5 of 8 Conference Committees

Course Instructor

SC647: Nanophotonics: Design, Fabrication and Characterization

Nanophotonics is an emerging multidisciplinary field that deals with optics on the nanoscale. Recent progress in nanophotonics has created new and exciting technological opportunities. The interaction of light with nanoscale matter can provide unique functionality for photonic devices, and render unique information about their structural and dynamical properties. This nanophotonics course examines the key issues of optics on the nanometer scale. Starting with photonic crystal technologies, selected fabrication techniques will be identified and explained. Photonic devices that exploit nanoscale effects, such as nonlinear optical effects and quantum confinement, will be discussed. Various nanocharacterization techniques used in metrology, nondestructive evaluation, and biomedical applications will be explained.

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