Dr. Jason R. Ensher Profile

Dr. Jason R. Ensher

Sr. Director Engineering at nLIGHT, Inc.

SPIE Involvement:

Author

Area of Expertise:

lasers , OCT , Lidar , development , management , physics

Websites:

Company Website

Publications (12)

Proceedings Article | 15 March 2023 Presentation + Paper

800 nm narrow linewidth tunable hybrid laser based on a dual micro-ring external cavity

Raimond Frentrop, Noor Schilder, I. Hegeman, Arnoud Everhardt, Edwin Klein, Douwe Geuzebroek, Lisa Winkler, Jason Ensher, René Heideman, Carl Kelly

Proceedings Volume 12440, 1244003 (2023) https://doi.org/10.1117/12.2649902

KEYWORDS: Tunable lasers, Microrings, Laser resonators, Tunable filters, Optical filters, Waveguides, Microresonators, Output couplers, Laser stabilization, Laser frequency, Photonic integrated circuits

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Proceedings Article | 5 March 2021 Presentation + Paper

Advantage of low NEP balanced receivers in swept source OCT

Bart Johnson, Tim Ford, Seungbum Woo, Ed Mallon, Mike Crawford, Jason Ensher, Ioan Bucsa, Peter Whitney

Proceedings Volume 11630, 116301M (2021) https://doi.org/10.1117/12.2577854

KEYWORDS: Receivers, Optical coherence tomography, Signal to noise ratio, Signal detection, Interference (communication), Heterodyning, Optical components, Laser resonators, Avalanche photodetectors

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Proceedings Article | 21 February 2020 Paper

Master-slave principle applied to an electrically tunable swept source-OCT system

Manuel J. Marques, Ramona Cernat, Jason Ensher, Adrian Bradu, Adrian Podoleanu

Proceedings Volume 11228, 112280D (2020) https://doi.org/10.1117/12.2548126

KEYWORDS: Interferometers, Optical coherence tomography, Clocks, Fourier transforms, Signal processing, Coherence (optics), Modulation, Physical sciences, Laser optics

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SPIE Journal Paper | 22 September 2016 Open Access

Comprehensive vascular imaging using optical coherence tomography-based angiography and photoacoustic tomography

Behrooz Zabihian, Zhe Chen, Elisabet Rank, Christoph Sinz, Marco Bonesi, Harald Sattmann, Jason Ensher, Michael Minneman, Erich Hoover, Jessika Weingast, Laurin Ginner, Rainer Leitgeb, Harald Kittler, Edward Zhang, Paul Beard, Wolfgang Drexler, Mengyang Liu

JBO, Vol. 21, Issue 09, 096011, (September 2016) https://doi.org/10.1117/12.10.1117/1.JBO.21.9.096011

KEYWORDS: Acquisition tracking and pointing, Capillaries, Skin, Optical coherence tomography, Visualization, Angiography, Imaging systems, Vascular imaging, Photoacoustic tomography, In vivo imaging

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Proceedings Article | 28 September 2015 Paper

Very high sensor-density multiplexing using a wavelength-to-time domain reflectometry approach based on a rapidly swept akinetic laser

M. Minneman, E. Hoover, P. Boschert, J. Ensher, M. Crawford, D. Derrickson, A. Kersey

Proceedings Volume 9634, 96342B (2015) https://doi.org/10.1117/12.2205455

KEYWORDS: Fiber Bragg gratings, Sensors, Reflectometry, Pulsed laser operation, Multiplexing, Reflectivity, Sensing systems, Optical design, Fiber lasers, Time division multiplexing

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Proceedings Article | 9 July 2015 Paper

Frequency sweep jitter and wander of a Vernier-Tuned Distributed Bragg Reflector (VT-DBR) laser at 1550 nm in OCT applications

R. Martens Biersach, Dennis Derickson, Jason Ensher

Proceedings Volume 9541, 95411C (2015) https://doi.org/10.1117/12.2183596

KEYWORDS: Fabry–Perot interferometers, Absorption, Optical coherence tomography, Calibration, Solids, Distributed Bragg reflectors, Electronic circuits, Laser applications, Laser stabilization, Optical testing

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Proceedings Article | 4 March 2014 Paper

O-band (1310 nm) Vernier-tuned distributed Bragg reflector (VT-DBR) device characterization for OCT

Desmond Talkington, Dennis Derickson, Jason Ensher

Proceedings Volume 8934, 89342X (2014) https://doi.org/10.1117/12.2040489

KEYWORDS: Mirrors, Modulation, Optical coherence tomography, Frequency modulation, Phase shift keying, Photodetectors, Capacitance, Fermium, Phase modulation, Amplitude modulation

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Proceedings Article | 30 January 2012 Paper

Long coherence length and linear sweep without an external optical k-clock in a monolithic semiconductor laser for inexpensive optical coherence tomography

Jason Ensher, Paul Boschert, Katherine Featherston, Jonathan Huber, Michael Crawford, Michael Minneman, Chris Chiccone, Dennis Derickson

Proceedings Volume 8213, 82130T (2012) https://doi.org/10.1117/12.911477

KEYWORDS: Optical coherence tomography, Semiconductor lasers, Point spread functions, Semiconductors, Laser systems engineering, Coherence (optics), Tunable lasers, Calibration, Data acquisition, Distributed Bragg reflectors

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Proceedings Article | 29 November 2011 Paper

All-semiconductor high-speed akinetic swept-source for OCT

Michael Minneman, Jason Ensher, Michael Crawford, Dennis Derickson

Proceedings Volume 8311, 831116 (2011) https://doi.org/10.1117/12.912119

KEYWORDS: Optical coherence tomography, Tunable lasers, Laser development, Laser dentistry, Semiconductors, Interferometers, Data acquisition, Semiconductor lasers, Wavelength tuning, Laser applications

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Proceedings Article | 17 June 2010 Paper

A laser module for holographic data storage

Jason Ensher, Aaron Wegner, Jason Cozakos, Richard Mandeville

Proceedings Volume 7730, 77300U (2010) https://doi.org/10.1117/12.859201

KEYWORDS: Holography, Semiconductor lasers, Data storage, Optical isolators, Telescopes, Prisms, Spatial filters, Laser development, Laser optics, Tunable lasers

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Proceedings Article | 3 June 2010 Paper

Enhancement of a tunable blue laser for holographic data storage

Masaki Omori, Hideki Kondo, Tadaaki Miyata, Naoki Mori, Hidenori Matsuo, Takashi Sasamuro, Shigeki Okauchi, Jason Ensher, Rod Harris, Aaron Wegner, Jason Cozakos

Proceedings Volume 7730, 77300T (2010) https://doi.org/10.1117/12.858057

KEYWORDS: Collimators, Holography, Tolerancing, Sensors, Data storage, Reliability, Tunable lasers, Temperature metrology, Semiconductor lasers, Dynamical systems

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Proceedings Article | 15 May 1998 Paper

Recent experiments with Bose-condensed gases at JILA

David Hall, Jason Ensher, Deborah Jin, Michael Matthews, Carl Wieman, Eric Cornell

Proceedings Volume 3270, (1998) https://doi.org/10.1117/12.308367

KEYWORDS: Magnetism, Chemical species, Microwave radiation, Clouds, Gases, Superposition, Clocks, Standards development, Rubidium, Oscillators

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Showing 5 of 12 publications

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