Dr. Doruk S. Engin Profile

Dr. Doruk S. Engin

Principal Laser Scientist at Fibertek Inc

SPIE Involvement:

Author

Publications (33)

Proceedings Article | 12 March 2024 Presentation + Paper

Highly sensitive, high dynamic range OLNA for single digit photons per bit in space applications

Justin Cook, Doruk Engin, Christopher Krush, Keith Petrillo, Scott Setzler

Proceedings Volume 12877, 128770V (2024) https://doi.org/10.1117/12.3001499

KEYWORDS: Erbium lasers, Optical filters, Design, Telecommunications, Receivers

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Proceedings Article | 12 March 2024 Presentation + Paper

FWM-PEV statistics measurements in 8 channel 50W high-power WDM PPM Tx with and without TDM-based FWM mitigation

Doruk Engin, Jacob Hwang, Xung Dang, Patrick Olmstead, Ted Wysocki, Mark Storm

Proceedings Volume 12877, 128770L (2024) https://doi.org/10.1117/12.3001478

KEYWORDS: Wavelength division multiplexing, Time division multiplexing, Transmitters, Breadboards, Pulse signals, Channel projecting optics, Reliability, Fiber amplifiers, Modulation, Laser development

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Proceedings Article | 15 March 2023 Presentation + Paper

FWM-PEV statistics in 8 channel 50W high power WDM PPM Tx with and without TDM based FWM mitigation

Doruk Engin, Jacob Hwang, Xung Dang, Patrick Olmstead, Ted Wysocki, Mark Storm

Proceedings Volume 12413, 124130F (2023) https://doi.org/10.1117/12.2647975

KEYWORDS: Wavelength division multiplexing, Time division multiplexing, Transmitters, Fiber amplifiers, Modulation, Reliability

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Proceedings Article | 4 March 2022 Presentation + Paper

Experimental and theoretical study of TDM based FWM mitigation in 8 channel 50W high power WDM PPM Tx

Doruk Engin, Jacob Hwang, Patrick Olmstead, David Pachowicz, Ted Wysocki, Mark Storm

Proceedings Volume 11993, 119930C (2022) https://doi.org/10.1117/12.2608752

KEYWORDS: Wavelength division multiplexing, Optical amplifiers, Fiber amplifiers, Transmitters, Time division multiplexing, High power fiber amplifiers, Modulation, Fiber lasers, Channel projecting optics, Reliability

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Proceedings Article | 4 March 2022 Presentation + Paper

Uplink laser assembly for the deep space optical communications payload aboard NASA's Psyche Asteroid Mission

Gregory Nau, Rajesh Kadel, Dave Pachowicz, Doruk Engin, Juan Landers, Slava Litvinovitch, Selma Tint, Mark Long, Dave Moll, Mark Storm

Proceedings Volume 11993, 119930F (2022) https://doi.org/10.1117/12.2609821

KEYWORDS: Optical communications, Fiber lasers, Modulation, Space operations, Pulsed laser operation, Astronomical imaging, Collimators, Asteroids, Control systems, Ytterbium

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Proceedings Article | 5 March 2021 Presentation + Paper

50W, 1.5um, 8 WDM (25nm) channels PPM downlink Tx for deep space lasercom

Doruk Engin, Slava Litvinovitch, Chad Gilman, He Cao, Ted Wysocki, Bruce McIntosh, Joe Rudd, Jacob Hwang, David Pachowicz, Keith Petrillo, Nicholas Sawruk, Andrew Schober, Mark Storm

Proceedings Volume 11678, 116780K (2021) https://doi.org/10.1117/12.2577276

KEYWORDS: Wavelength division multiplexing, Optical amplifiers, High power fiber amplifiers, Transmitters, Fiber amplifiers, Telecommunications, Prototyping, Vibrometry, Time division multiplexing

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Proceedings Article | 2 March 2020 Paper

50W, 1.5um, 8 WDM (25nm) channels PPM downlink Tx for deep space lasercom

Doruk Engin, Slava Litvinovitch, David Pachowics, Jacob Hwang, Chad Gilman, He Cao, Keith Petrillo, Mark Storm, Malcolm Wright

Proceedings Volume 11272, 112720V (2020) https://doi.org/10.1117/12.2543905

KEYWORDS: Wavelength division multiplexing, Optical amplifiers, Transmitters, Fiber amplifiers, Electronics, Reliability, Diodes, Fiber lasers, Channel projecting optics, High power fiber amplifiers

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Proceedings Article | 25 February 2020 Presentation + Paper

High power thulium fiber laser systems for airborne and spaceborne missions

Doruk Engin, William Rudd, Mark Storm, Mark Long, Viatcheslav Litvinovitch, Lawrence Holley, Nicholas Sawruk

Proceedings Volume 11261, 112610O (2020) https://doi.org/10.1117/12.2547955

KEYWORDS: Laminated object manufacturing, Fiber lasers, YAG lasers, Laser systems engineering, LIDAR, Laser optics, Temperature metrology, Oscillators, Space operations, Laser development

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Proceedings Article | 8 March 2019 Paper

51W, 1.5um, 7 WDM (25nm) channels PPM downlink Tx and 500W, 1um, uplink PPM Tx for deep space lasercom

Doruk Engin, Joe Rudd, Khoa Le, Kent Puffenberger, He Cao, Nick Sawruk, Brian Mathason, Andrew Schober, Mark Storm

Proceedings Volume 10910, 109100L (2019) https://doi.org/10.1117/12.2513801

KEYWORDS: Transmitters, Optical amplifiers, Wavelength division multiplexing, Fiber amplifiers, Space operations, Astronomical imaging, Optical communications, Pulsed laser operation, Erbium, Fiber lasers

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Proceedings Article | 5 March 2019 Paper

CubeSat lasercom optical terminals for near-Earth to deep space communications

Brian Mathason, Michael Albert, Doruk Engin, He Cao, Keith Petrillo, Jacob Hwang, Khoa Le, Kent Puffenberger, Slava Litvinovitch, Mark Storm, Richard Utano

Proceedings Volume 10910, 1091005 (2019) https://doi.org/10.1117/12.2508047

KEYWORDS: Laser optics, Laser communications, Satellites, Optical communications, Laser development, Telecommunications, Sensors, Space operations, Satellite communications, Data communications

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Proceedings Article | 4 March 2019 Paper

Spaceflight 100W, 1940nm polarization maintaining Tm doped fiber laser for pumping Q-switched 2um Ho:YLF

Doruk Engin, Slava Litvinovitch, Mark Long, He Cao, Mark Storm

Proceedings Volume 10899, 108990H (2019) https://doi.org/10.1117/12.2507905

KEYWORDS: Fiber lasers, Diodes, Laminated object manufacturing, Laser packaging, Reliability, Laser development, Electronics, Thulium, LIDAR, Optical amplifiers

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Proceedings Article | 30 August 2017 Presentation + Paper

Efficient, space-based, PM 100W thulium fiber laser for pumping Q-switched 2um Ho:YLF for global winds and carbon dioxide lidar

Doruk Engin, Brian Mathason, Mark Storm

Proceedings Volume 10406, 104060B (2017) https://doi.org/10.1117/12.2275616

KEYWORDS: LIDAR, Fiber lasers, Wind measurement, Carbon dioxide lasers, YAG lasers, Q switched lasers, Carbon dioxide, Laser development, Laser applications, Weather forecasting

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Proceedings Article | 30 August 2017 Presentation + Paper

Compact, highly efficient, single-frequency 25W, 2051nm Tm fiber-based MOPA for CO2 trace-gas laser space transmitter

Doruk Engin, Ti Chuang, Slava Litvinovitch, Mark Storm

Proceedings Volume 10406, 1040606 (2017) https://doi.org/10.1117/12.2276339

KEYWORDS: Fiber lasers, LIDAR, Laser development, YAG lasers, Carbon dioxide lasers, Satellites, Carbon dioxide, Absorption, Frequency modulation, Earth's atmosphere

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Fibertek has developed and demonstrated an ideal high-power; low-risk; low-size, weight, and power (SWaP) 2051 nm laser design meeting the lidar requirements for satellite-based global measurement of carbon dioxide (CO₂). The laser design provides a path to space for either a coherent lidar approach being developed by NASA Jet Propulsion Laboratory (JPL)^1,2 or an Integrated Path Differential Lidar (IPDA) approach developed by Harris Corp using radio frequency (RF) modulation and being flown as part of a NASA Earth Venture Suborbital Mission—NASA’s Atmospheric Carbon and Transport – America.^3,4 The thulium (Tm) fiber laser amplifies a <500 kHz linewidth distributed feedback (DFB) laser up to 25 W average power in a polarization maintaining (PM) fiber. The design manages and suppresses all deleterious non-linear effects that can cause linewidth broadening or amplified spontaneous emission (ASE) and meets all lidar requirements. We believe the core laser components, architecture, and design margins can support a coherent or IPDA lidar 10-year space mission. With follow-on funding Fibertek can adapt an existing space-based Technology Readiness Level 6 (TRL-6), 20 W erbium fiber laser package for this Tm design and enable a near-term space mission with an electrical-to-optical (e-o) efficiency of <20%.

A cladding-pumped PM Tm fiber-based amplifier optimized for high efficiency and high-power operation at 2051 nm is presented. The two-stage amplifier has been demonstrated to achieve 25 W average power and <16 dB polarization extinction ratio (PER) out of a single-mode PM fiber using a <500 kHz linewidth JPL DFB laser^5-7 and 43 dB gain. The power amplifier’s optical conversion efficiency is 53%. An internal efficiency of 58% is calculated after correcting for passive losses. The two-stage amplifier sustains its highly efficient operation for a temperature range of 5-40°C. The absence of stimulated Brillouin scattering (SBS) for the narrow linewidth amplification shows promise for further power scaling.

Proceedings Article | 22 February 2017 Paper

Compact, highly efficient, athermal, 25W, 2051nm Tm-fiber based MOPA for CO2 trace-gas laser space transmitter

Doruk Engin, Ti Chuang, Mark Storm

Proceedings Volume 10083, 1008325 (2017) https://doi.org/10.1117/12.2250516

KEYWORDS: Transmitters, Carbon dioxide lasers, Carbon dioxide, Fiber amplifiers, High power fiber amplifiers, Optical amplifiers, Thulium, LIDAR, Absorption, Phase modulation, Fiber lasers, Gas lasers, Polarization

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SPIE Journal Paper | 9 August 2016

Development, testing, and initial space qualification of 1.5-μm, high-power (6 W), pulse-position-modulated fiber laser transmitter for deep-space laser communication

Shantanu Gupta, Doruk Engin, Dave Pachowicz, Jean-Luc Fouron, Juan Lander, Xung Dang, Slava Litvinovitch, Ti Chuang, Kent Puffenberger, Frank Kimpel, Rich Utano, Malcolm Wright

OE, Vol. 55, Issue 11, 111606, (August 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.11.111606

KEYWORDS: Laminated object manufacturing, Transmitters, Fiber amplifiers, Fiber lasers, Semiconductor lasers, Interfaces, Laser communications, Fiber optics, Fiber optic components, Optical communications

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Proceedings Article | 13 May 2016 Paper

Highly efficient, high energy 1.5 μm pulsed fiber laser with precise linewidth and wavelength control of individual pulses

Doruk Engin, Ibraheem Darab, Chuck Culpeper, Jean-Luc Fouron, Lew Holt, John Burton, Wei Lu, Shantanu Gupta

Proceedings Volume 9834, 98340W (2016) https://doi.org/10.1117/12.2223783

KEYWORDS: Fiber amplifiers, Pulsed fiber lasers, Control systems, Transmitters, Pulsed laser operation, Diffraction, Field programmable gate arrays, Laminated object manufacturing, Switching, Laser optics

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Proceedings Article | 15 March 2016 Paper

Development, testing, and initial space qualification of 1.5-µm, high-power (6W), pulse-position-modulated (PPM) fiber laser transmitter for deep-space laser communication

Shantanu Gupta, Doruk Engin, Dave Pachowicz, Jean-Luc Fouron, Juan Lander, Xung Dang, Slava Litvinovich, Ti Chuang, Kent Puffenberger, Frank Kimpel, Rich Utano, Malcolm Wright

Proceedings Volume 9739, 97390V (2016) https://doi.org/10.1117/12.2213661

KEYWORDS: Transmitters, Fiber lasers, Laser communications, Astronomical imaging, Asteroids, High power lasers, Laser development, Polarization, Diffraction, Laser sources, Laminated object manufacturing, Semiconductor lasers, Electronics, Interfaces, Optical communications, Fiber optic components, Pulsed laser operation

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Proceedings Article | 11 March 2016 Paper

High energy, narrow linewidth 1572nm ErYb-fiber based MOPA for a multi-aperture CO2 trace-gas laser space transmitter

Doruk Engin, Brian Mathason, Mark Stephen, Anthony Yu, He Cao, Jean-Luc Fouron, Mark Storm

Proceedings Volume 9728, 97282S (2016) https://doi.org/10.1117/12.2212481

KEYWORDS: Optical amplifiers, Fiber amplifiers, Amplifiers, Carbon dioxide lasers, Transmitters, Carbon dioxide, Commercial off the shelf technology, Laminated object manufacturing, LIDAR, Laser optics

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Proceedings Article | 1 September 2015 Paper

Fiber-based, trace-gas, laser transmitter technology development for space

Mark Stephen, Anthony Yu, Jeffrey Chen, Jeffrey Nicholson, Doruk Engin, Brian Mathason, Stewart Wu, Graham Allan, William Hasselbrack, Brayler Gonzales, Lawrence Han, Kenji Numata, Mark Storm, James Abshire

Proceedings Volume 9612, 96120B (2015) https://doi.org/10.1117/12.2191395

KEYWORDS: Transmitters, Optical amplifiers, Fiber amplifiers, Carbon dioxide lasers, Laser applications, Carbon dioxide, Laser development, Fiber lasers, Aerospace engineering, LIDAR

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Proceedings Article | 20 May 2015 Paper

Yb-fiber-MOPA based high energy and average power uplink laser beacon for deep space communication operating under Nested PPM format

Doruk Engin, John Burton, Ibraheem Darab, Frank Kimpel, Shantanu Gupta

Proceedings Volume 9466, 94660V (2015) https://doi.org/10.1117/12.2177559

KEYWORDS: Modulation, Fiber amplifiers, Diodes, Optical amplifiers, Control systems, Space operations, Fiber lasers, Transmitters, Pulsed laser operation, Electronics

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Proceedings Article | 9 June 2014 Paper

Highly reliable and efficient 1.5um-fiber-MOPA-based, high-power laser transmitter for space communication

Doruk Engin, Slava Litvinovitch, Frank Kimpel, Kent Puffenberger, Xung Dang, Jean-Luc Fouron, Nigel Martin, Mark Storm, Shantanu Gupta, Rich Utano

Proceedings Volume 9081, 90810G (2014) https://doi.org/10.1117/12.2050496

KEYWORDS: Laminated object manufacturing, Transmitters, Laser optics, Fiber lasers, High power lasers, Laser development, Astronomical imaging, Optical amplifiers, Interfaces, Optical communications

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Proceedings Article | 9 June 2014 Paper

Highly-efficient, high-energy pulse-burst Yb-doped fiber laser with transform limited linewidth

Doruk Engin, Ibraheem Darab, John Burton, Jean-Luc Fouron, Frank Kimpel, Brian Mathason, Shantanu Gupta, Mark Storm

Proceedings Volume 9081, 908112 (2014) https://doi.org/10.1117/12.2050506

KEYWORDS: Fiber lasers, Fiber amplifiers, Optical amplifiers, Bragg cells, Pulsed laser operation, Energy efficiency, Control systems, Amplifiers, Semiconductor lasers, Modulation

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Proceedings Article | 7 March 2014 Paper

High-power narrow linewidth 1.5-um fiber-amplifier lidar transmitter for atmospheric CO2 detection

Wei Lu, Doruk Engin, Mark Storm, Shantanu Gupta

Proceedings Volume 8961, 89610C (2014) https://doi.org/10.1117/12.2041204

KEYWORDS: Fiber amplifiers, Carbon dioxide, Optical amplifiers, LIDAR, Bandpass filters, Transmitters, Pulsed laser operation, Modulation, Carbon dioxide lasers, Continuous wave operation

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Proceedings Article | 6 March 2014 Paper

1030nm Yb-fiber-MOPA-based, multi-aperture high power, high energy uplink laser beacon for deep space communication

Doruk Engin, John Burton, Ibraheem Darab, Frank Kimpel, Brian Mathason, Shantanu Gupta

Proceedings Volume 8971, 89710D (2014) https://doi.org/10.1117/12.2040296

KEYWORDS: Modulation, Raman spectroscopy, Bragg cells, Diodes, Commercial off the shelf technology, Transmitters, Fiber amplifiers, Diffraction, Optical amplifiers, Ytterbium

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Proceedings Article | 24 September 2013 Paper

Fiber laser systems for space lasercom and remote sensing

Shantanu Gupta, Doruk Engin, Kent Puffenberger, Slava Litvinovich, Frank Kimpel, Rich Utano

Proceedings Volume 8876, 88760E (2013) https://doi.org/10.1117/12.2025888

KEYWORDS: Fiber lasers, Transmitters, Laser applications, Laser systems engineering, Space operations, Fiber optics, Semiconductor lasers, Remote sensing, Failure analysis, Modulation

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Proceedings Article | 23 May 2013 Paper

High power modal instability measurements of very large mode area (VLMA) step index fibers

Doruk Engin, Wei Lu, Horacio Verdun, Shantanu Gupta

Proceedings Volume 8733, 87330J (2013) https://doi.org/10.1117/12.2016106

KEYWORDS: Optical fibers, 3D modeling, Scattering, Neodymium, Near field, Step index fibers, Rayleigh scattering, Ions, Signal attenuation, Electroluminescence

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Proceedings Article | 19 March 2013 Paper

Highly efficient and athermal 1550nm-fiber-MOPA-based high power down link laser transmitter for deep space communication

Doruk Engin, Frank Kimpel, John Burton, He Cao, Bruce McIntosh, Mark Storm, Shantanu Gupta

Proceedings Volume 8610, 86100G (2013) https://doi.org/10.1117/12.2005926

KEYWORDS: Optical amplifiers, Fiber amplifiers, Space operations, Pulsed laser operation, Transmitters, Amplifiers, Phase modulation, Modulators, Electronics, Scattering

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Proceedings Article | 19 June 2012 Paper

Waveform agile high-power fiber laser illuminators for directed-energy weapon systems

Doruk Engin, Wei Lu, Frank Kimpel, Shantanu Gupta

Proceedings Volume 8381, 838118 (2012) https://doi.org/10.1117/12.919761

KEYWORDS: Fiber lasers, Fiber optic illuminators, Pulsed laser operation, Raman spectroscopy, Weapons, Laser systems engineering, Optical simulations, Neodymium, Fiber amplifiers, Telecommunications

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Proceedings Article | 7 May 2012 Paper

Novel fiber-MOPA-based high power blue laser

Doruk Engin, Jean-Luc Fouron, Youming Chen, Andromeda Huffman, Fran Fitzpatrick, Ralph Burnham, Shantanu Gupta

Proceedings Volume 8381, 838117 (2012) https://doi.org/10.1117/12.919719

KEYWORDS: Optical fibers, Neodymium, Fiber lasers, Pulsed laser operation, Aluminum, Optical filters, Optical simulations, Fiber amplifiers, Solids

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Proceedings Article | 23 February 2012 Paper

Short-wavelength (1010-1030nm) Yb-fiber-MOPA-based multi-aperture high-power uplink laser beacons for space communication

Doruk Engin, Wei Lu, Frank Kimpel, Shantanu Gupta

Proceedings Volume 8246, 82460K (2012) https://doi.org/10.1117/12.909656

KEYWORDS: Fiber lasers, Bragg cells, Optical filters, Telecommunications, Solids, Optical simulations, Single photon emission computed tomography, Laser applications, Laser systems engineering

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Proceedings Article | 22 February 2011 Paper

Fiber-MOPA based multi-kW uplink laser beacons for deep-space communication links

Doruk Engin, Wei Lu, Frank Kimpel, Youming Chen, Mehmetcan Akbulut, Shantanu Gupta

Proceedings Volume 7923, 79230D (2011) https://doi.org/10.1117/12.875784

KEYWORDS: Fiber lasers, Bragg cells, Telecommunications, Field programmable gate arrays, Pulse shaping, Algorithm development, Detection and tracking algorithms, Modulation, Laser systems engineering, Modulators

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Proceedings Article | 22 February 2011 Paper

1 kW cw Yb-fiber-amplifier with <0.5GHz linewidth and near-diffraction limited beam-quality for coherent combining application

Doruk Engin, Wei Lu, Mehmetcan Akbulut, Bruce McIntosh, Horacio Verdun, Shantanu Gupta

Proceedings Volume 7914, 791407 (2011) https://doi.org/10.1117/12.875701

KEYWORDS: Phase modulation, Modulation, Continuous wave operation, Fiber lasers, Fiber amplifiers, Laser scattering, Scattering, Diffraction, Step index fibers

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Proceedings Article | 10 February 2011 Paper

RF-modulated pulsed fiber optic lidar transmitter for improved underwater imaging and communications

F. Kimpel, Y. Chen, J.-L. Fouron, M. Akbulut, D. Engin, S. Gupta

Proceedings Volume 7924, 79240I (2011) https://doi.org/10.1117/12.876059

KEYWORDS: Transmitters, LIDAR, Underwater imaging, Receivers, Fiber amplifiers, Second-harmonic generation, Backscatter, Fiber lasers, Signal attenuation, Modulation

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Showing 5 of 33 publications

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