Ms. Elisavet Troupaki Profile

Elisavet Troupaki

Branch Head - Laser and Electro-optics Branch

Publications (13)

Proceedings Article | 4 March 2019 Paper

Integrated photonics for NASA applications

Michael Krainak, Mark Stephen, Elisavet Troupaki, Sarah Tedder, Baraquiel Reyna, Jonathan Klamkin, Hongwei Zhao, Bowen Song, Joseph Fridlander, Minh Tran, John Bowers, Keren Bergman, Michal Lipson, Anthony Rizzo, Ipshita Datta, Nathan Abrams, Shayan Mookherjea, Seng-Tiong Ho, Qiang Bei, Yingyan Huang, Yongming Tu, Behzad Moslehi, James Harris, Andrey Matsko, Anatoliy Savchenkov, Guangyao Liu, Roberto Proietti, S. J. Yoo, Leif Johansson, Christophe Dorrer, Francisco Arteaga-Sierra, Jie Qiao, Songbin Gong, Tingyi Gu, Osgar John Ohanian, Xingjie Ni, Yimin Ding, Yao Duan, Hamed Dalir, Ray Chen, Volker Sorger, Tin Komljenovic

Proceedings Volume 10899, 108990F (2019) https://doi.org/10.1117/12.2509808

KEYWORDS: Waveguides, Modulation, Silicon, Modulators, Photonic integrated circuits, Graphene, Oscillators, Integrated photonics, Integrated optics, Silicon photonics

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NASA is working with US industry and academia to develop Photonic Integrated Circuits (PICs) for: (1) Sensors (2) Analog RF applications (3) Computing and free space communications. The PICs provide reduced size, weight, and power that is critical for space-based systems. We describe recent breakthrough 3D monolithic integration of photonic structures, particularly high-speed graphene-silicon devices on CMOS electronics to create CMOS-compatible highbandwidth transceivers for ultra-low power Terabit-scale optical communications. An integrated graphene electro-optic modulator has been demonstrated with a bandwidth of 30 GHz. Graphene microring modulators are especially attractive for dense wavelength division multiplexed (DWDM) systems. For space-based optical communication and ranging we have demonstrated generating a variable number of channels from a single laser using breadboard components, using a single-sideband carrier-suppressed (SSBCS) modulator driven by an externally-supplied RF tone (arbitrary RF frequency), a tunable optical bandpass filter, and an optical amplifier which are placed in a loop. We developed a Return--to-Zero (RZ) Differential Phase Shift Keying (DPSK) laser transmitter PIC using an InP technology platform that includes a tunable laser, a Semiconductor Optical Amplifier (SOA), high-speed Mach-Zehnder Modulator (MZM), and an electroabsorption (EAM) modulator. A Silicon Nitride (SiN) platform integrated photonic circuit suitable for a spectrally pure chip-scale tunable opto-electronic RF oscillator (OEO) that can operate as a flywheel in high precision optical clock modules, as well as radio astronomy, spectroscopy, and local oscillator in radar and communications systems is needed. We have demonstrated a low noise optical frequency combs generation from a small OEO prototypes containing very low loss (~1 dB) waveguide couplers of various shapes and sizes integrated with an ultrahigh-Q MgF2 resonators. An innovative miniaturized lab-on-a-chip device is being developed to directly monitor astronaut health during missions using ~3 drops of body fluid sample like blood, urine, and potentially other body fluids like saliva, sweat or tears. The first-generation system comprises a miniaturized biosensor based on PICs (including Vertical Cavity Surface Emitting Laser – VCSEL, photodetector and optical filters and biochemical assay that generates a fluorescent optical signal change in response to the target analyte.

Proceedings Article | 20 February 2018 Presentation + Paper

ICESat-2 laser Nd:YVO4 amplifier

Nicholas Sawruk, Patrick Burns, Ryan Edwards, Viatcheslav Litvinovitch, Nigel Martin, Greg Witt, Elias Fakhoury, John Iskander, Mark Pronko, Elisavet Troupaki, Michael Bay, Charles He, Liqin Wang, John Cavanaugh, Babak Farrokh, Jonathan Salem, Eric Baker

Proceedings Volume 10513, 105130X (2018) https://doi.org/10.1117/12.2292256

KEYWORDS: Crystals, Indium, Optical amplifiers, Laser crystals, Gold, Amplifiers, Interfaces, 3D modeling, Laser systems engineering, Thermal modeling

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Proceedings Article | 13 May 2016 Paper

Three-year aging of prototype flight laser at 10 kHz and 1 ns pulses with external frequency doubler for ICESat-2 mission

Oleg Konoplev, Furqan Chiragh, Aleksey Vasilyev, Ryan Edwards, Mark Stephen, Elisavet Troupaki, Anthony Yu, Michael Krainak, Nick Sawruk, Floyd Hovis, Charles Culpepper, Kathy Strickler

Proceedings Volume 9834, 98340A (2016) https://doi.org/10.1117/12.2225985

KEYWORDS: Crystals, Prototyping, Contamination, Laser crystals, Second-harmonic generation, Reliability, Diagnostics, Laser crystals, Control systems, Laser systems engineering, Laser applications

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Proceedings Article | 20 February 2015 Paper

Space qualification of the optical filter assemblies for the ICESat-2/ATLAS instrument

E. Troupaki, Z. Denny, S. Wu, H. Bradshaw, K. Smith, J. Hults, L. Ramos-Izquierdo, W. Cook

Proceedings Volume 9346, 93460H (2015) https://doi.org/10.1117/12.2077839

KEYWORDS: Fabry–Perot interferometers, Optical filters, Optical fabrication, Transmittance, Temperature metrology, Beam splitters, Sensors, Diffractive optical elements, Optical testing, Receivers

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Proceedings Article | 4 May 2010 Paper

885-nm laser diode array pumped ceramic Nd:YAG master oscillator power amplifier system

Anthony Yu, Steven Li, Mark Stephen, Antonios Seas, Elisavet Troupaki, Aleksey Vasilyev, Heather Conley, Tim Filemyr, Cynthia Kirchner, Alberto Rosanova

Proceedings Volume 7686, 76860G (2010) https://doi.org/10.1117/12.849596

KEYWORDS: Nd:YAG lasers, Neodymium, Ceramics, Semiconductor lasers, Crystals, Molybdenum, Laser applications, Laser crystals, Diodes, Laser systems engineering

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Proceedings Article | 17 February 2010 Paper

Quasi-CW laser diode arrays for space applications

Antonios Seas, Elisavet Troupaki, Aleksey Vasilyev, Heather Conley

Proceedings Volume 7578, 757805 (2010) https://doi.org/10.1117/12.842060

KEYWORDS: Laser systems engineering, Semiconductor lasers, Pulsed laser operation, Microscopes, Inspection, Thermography, Laser applications, Satellites, Diodes, Manufacturing

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Proceedings Article | 17 February 2010 Paper

Space laser transmitter development for ICESat-2 mission

Anthony Yu, Mark Stephen, Steven Li, George Shaw, Antonios Seas, Edward Dowdye, Elisavet Troupaki, Peter Liiva, Demetrios Poulios, Kathy Mascetti

Proceedings Volume 7578, 757809 (2010) https://doi.org/10.1117/12.843342

KEYWORDS: Semiconductor lasers, Laser development, Optical amplifiers, Transmitters, Laser systems engineering, Pulsed laser operation, Fiber amplifiers, Diodes, Laser applications, Planar waveguides

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Proceedings Article | 17 February 2010 Paper

Extended testing of laser systems for space applications

Antonios Seas, Anthony Yu, Anthony Melak, David Mostofi, Elisavet Troupaki, Aleksey Vasilyev, Heather Conley

Proceedings Volume 7578, 757806 (2010) https://doi.org/10.1117/12.842622

KEYWORDS: Laser systems engineering, Laser applications, Pulsed laser operation, Oscillators, Laser development, Near field, Reliability, Oscilloscopes, Switches, Data modeling

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Proceedings Article | 28 February 2009 Paper

Qualification of laser diode arrays for space applications

Elisavet Troupaki, Aleksey Vasilyev, Mark Stephen, Antonios Seas, Nasir Kashem

Proceedings Volume 7193, 719307 (2009) https://doi.org/10.1117/12.814950

KEYWORDS: Semiconductor lasers, Reliability, Capacitors, Space operations, Laser systems engineering, Pulsed laser operation, Data modeling, Nd:YAG lasers, Failure analysis, Diodes

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Proceedings Article | 28 February 2009 Paper

Longevity validation of the LOLA laser design by extended vacuum testing of the LOLA engineering model laser

George Shaw, Mark Stephen, Elisavet Troupaki, Aleksey Vasilyev, Anthony Yu

Proceedings Volume 7193, 719306 (2009) https://doi.org/10.1117/12.814883

KEYWORDS: Semiconductor lasers, Diodes, Switches, Oscillators, Laser development, Pulsed laser operation, Laser optics, Transmitters, Space operations, Beryllium

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Proceedings Article | 13 February 2009 Paper

Overview of space qualified solid state lasers development at NASA Goddard Space Flight Center

Anthony Yu, Steve Li, George Shaw, Antonios Seas, Mark Stephen, Elisavet Troupaki, Aleksey Vasilyev, Luis Ramos-Izquierdo, Alan Lukemier, William Mamakos, Anthony Melak, Jeff Guzek, Alberto Rosanova

Proceedings Volume 7193, 719305 (2009) https://doi.org/10.1117/12.814954

KEYWORDS: Transmitters, Laser development, Mars, Solid state lasers, Semiconductor lasers, Aerospace engineering, Pulsed laser operation, Mercury (planet), Planets, LIDAR

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Proceedings Article | 29 August 2006 Paper

The reliability of the laser diode arrays

Aleksey Vasilyev, Elisavet Troupaki, Graham Allan, Nasir Kashem, Mark Stephen

Proceedings Volume 6308, 63080G (2006) https://doi.org/10.1117/12.679599

KEYWORDS: Semiconductor lasers, Reliability, Manufacturing, Amplifiers, Laser welding, Space operations, Diodes, Satellites, Heatsinks, Inspection

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Proceedings Article | 13 September 2005 Paper

Characterization of high-power quasi-cw laser diode arrays

Mark Stephen, Aleksey Vasilyev, Elisavet Troupaki, Graham Allan, Nasir Kashem

Proceedings Volume 5887, 58870A (2005) https://doi.org/10.1117/12.620373

KEYWORDS: Semiconductor lasers, Reliability, Inspection, Temperature metrology, High power lasers, Near field optics, Diodes, Failure analysis, Aerospace engineering, Satellites

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Showing 5 of 13 publications

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