Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Paul Petzar"'
Autor:
Bo C. Trieu, Paul Petzar, Upendra N. Singh, Jirong Yu, Mulugeta Petros, Grady J. Koch, Michael J. Kavaya, Jeffrey Y. Beyon
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 31:826-842
The first airborne wind measurements of a pulsed, 2-μm solid-state, high-energy, wind-profiling lidar system for airborne measurements are presented. The laser pulse energy is the highest to date in an eye-safe airborne wind lidar system. This energ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1aa593fc6a3a106450b018ac4f43a21
https://doi.org/10.1175/jtech-d-12-00274.1
https://doi.org/10.1175/jtech-d-12-00274.1
Publikováno v:
Optics letters. 37(13)
A fully conductively cooled and diode-pumped linear Ho:Tm:LuLiF laser oscillator can generate more than 1 J normal mode pulses at a 10 Hz pulse repetition rate where heat pipes are used for cooling pump diodes and laser crystal. As an amplifier, it c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d60ba463ab6415d25bcef4e776d7768e
https://pubmed.ncbi.nlm.nih.gov/22743455
https://pubmed.ncbi.nlm.nih.gov/22743455
Publikováno v:
Advances in Optical Materials.
Tm:fiber laser pumped Ho:YLF laser enables efficient operation at high repetition rate. Corresponding injection seeding technique has been developed. Its significant application is a transmitter of air/space borne CO2 differential absorption lidar.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a4c13e98bf0f98862e912fadb586461
https://doi.org/10.1364/filas.2011.fwc3
https://doi.org/10.1364/filas.2011.fwc3
Autor:
Upendra N. Singh, Bo Trieu, Yingxin Bai, Jeffrey Y. Beyon, Paul Petzar, Jirong Yu, Songsheng Chen, Mulugeta Petros, Grady J. Koch, Michael J. Kavaya, Edward A. Modlin
Publikováno v:
Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing VI.
Sustained research efforts at NASA Langley Research Center (LaRC) during last fifteen years have resulted in a significant advancement in 2-micron diode-pumped, solid-state laser transmitter for wind and carbon dioxide measurement from ground, air an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a03a9644fb2d76d001a111ef1bb155c
https://doi.org/10.1117/12.865853
https://doi.org/10.1117/12.865853
Publikováno v:
Advanced Solid-State Photonics.
High repetition rate operation of an injection seeded Ho:YLF laser has been demonstrated. For 1 kHz operation, the output pulse energy reaches 5.8mJ and the optical-to-optical efficiency is 39% when the pump power is 14.5W.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5ec13a776bd7c687a37beb173acef67
https://doi.org/10.1364/assp.2009.wb22
https://doi.org/10.1364/assp.2009.wb22
Autor:
Hyung Lee, Upendra N. Singh, Songsheng Chen, Paul Petzar, Jirong Yu, Mulugeta Petros, Bo Trieu, Yingxin Bai
Publikováno v:
Conference on Lasers and Electro-Optics/International Quantum Electronics Conference.
An injection-seeded, Q-switched Ho:YLF laser has been developed. For 13W pumping from a CW Tm:fiber laser, the energy and width of single longitudinal mode pulse are 5.5mJ and 50ns, respectively. The repetition rate is 1.25kHz.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e80aea96dbc0bcbb54c5d30f748a0310
https://doi.org/10.1364/cleo.2009.cwh5
https://doi.org/10.1364/cleo.2009.cwh5
Publikováno v:
Advanced Solid-State Photonics.
A conductively-cooled Ho:Tm:LuLiF laser oscillator generates 1.6J normal mode pulses at 10Hz with optical to optical efficiency of 20%. When the laser head module is used as the amplifier, the double-pass small-signal amplification excesses 25.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f7e6b6d5a84f567ef2beadb804ecc78
https://doi.org/10.1364/assp.2008.we34
https://doi.org/10.1364/assp.2008.we34
Autor:
Mulugeta Petros, Jirong Yu, Bo Trieu, Yingxin Bai, Paul Petzar, Upendra N. Singh, Karl Reithmaier
Publikováno v:
2007 Conference on Lasers and Electro-Optics (CLEO).
The design of a diode pumped, injection seeded MOPA with a transform limited line width and diffraction limited beam quality is presented. This lidar transmitter produces over 300mJ energy at 10 Hz repetition rate.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::662326460149c0d569f45023b10ca947
https://doi.org/10.1109/cleo.2007.4453700
https://doi.org/10.1109/cleo.2007.4453700
Autor:
Bo Trieu, Paul Petzar, Upendra N. Singh, Jirong Yu, Mulugeta Petrosa, Yingxin Bai, Karl Reithmaier
Publikováno v:
2007 Quantum Electronics and Laser Science Conference.
The design of a diode pumped, injection seeded MOPA with a transform limited line width and diffraction limited beam quality is presented. This lidar transmitter produces over 300mJ energy at 10 Hz repetition rate.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2a5508c55caa10022d0b5a89124e354
https://doi.org/10.1109/qels.2007.4431477
https://doi.org/10.1109/qels.2007.4431477
Autor:
Upendra N. Singh, Bo Trieu, Vladimir V. Shkunov, David A. Rockwell, A.A. Betin, Yingxin Bai, Paul Petzar, Jirong Yu, V. Leyva, Hyung R. Lee, J. Wang, M. Petros
Publikováno v:
Advanced Solid-State Photonics.
For the first time, beam quality improvement of 2 μm laser using fiber based phase conjugation mirror has been demonstrated. Single frequency operation is necessary to lower threshold. The reflectivity of the PCM is ~50%.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5548a0c2cdd2f9fc44b9005c5c67b6e8
https://doi.org/10.1364/assp.2007.mb21
https://doi.org/10.1364/assp.2007.mb21