Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Jeremy, Pigeon"'
Autor:
S. Ya. Tochitsky, Dmitri V. Martyshkin, Ilan Ben-Zvi, Jeremy Pigeon, G. J. Louwrens, Vladimir V. Fedorov, C. Joshi, S. B. Mirov, D. Tovey, Krishna Karki
Publikováno v:
Physical Review A. 104
The resonant nonlinear refraction of $4\text{--}5\text{\ensuremath{-}}\ensuremath{\mu}\text{m}$ light in CO and $\mathrm{C}{\mathrm{O}}_{2}$ gas at a peak intensity of $15\phantom{\rule{0.16em}{0ex}}\mathrm{MW}/\mathrm{c}{\mathrm{m}}^{2}$ was demonst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9f512174248ce2cc69479a31b0d33b8
https://doi.org/10.1103/physreva.104.043519
https://doi.org/10.1103/physreva.104.043519
Autor:
Dana, Tovey, Jeremy, Pigeon, Sergei, Tochitsky, Gerhard, Louwrens, Ilan, Ben-Zvi, Dmitry, Martyshkin, Vladimir, Fedorov, Krishna, Karki, Sergey, Mirov, Chan, Joshi
Publikováno v:
Optics express. 29(20)
10 µm lasing is studied in a compact CO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::05893bd30a3bbed91ddb17e77812cbc6
https://pubmed.ncbi.nlm.nih.gov/34615237
https://pubmed.ncbi.nlm.nih.gov/34615237
Autor:
Krishna Karki, Vladimir V. Fedorov, Sergei Tochitsky, G. J. Louwrens, D. Tovey, Chan Joshi, Dmitry Martyshkin, Jeremy Pigeon, Sergey B. Mirov, Ilan Ben-Zvi
10 {\mu}m lasing is studied in a compact CO2-He cell pressurized up to 15 atm when optically pumped by a ~50 mJ Fe:ZnSe laser tunable around 4.3 {\mu}m. The optimal pump wavelength and partial pressure of CO2 for generating 10 {\mu}m pulses are found
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d3f4b26daeb5b2bf8f2a158651c0bdd
Autor:
Jeremy Pigeon, S. Ya. Tochitsky, G. J. Louwrens, Ilan Ben-Zvi, D. Tovey, Dmitri V. Martyshkin, Krishna Karki, S. B. Mirov, Vladimir V. Fedorov, C. Joshi
Publikováno v:
Conference on Lasers and Electro-Optics.
Lasing is studied in CO2 pumped at ~4.3 µm by a tunable Fe:ZnSe laser. Gain is measured at ~10 µm at pressures ≤12 atm where gain bandwidth is broad enough for potential picosecond pulse amplification.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc5eadd1bbb5ccb5472b8b2b3f15ba05
https://doi.org/10.1364/cleo_si.2021.sth2l.6
https://doi.org/10.1364/cleo_si.2021.sth2l.6
Publikováno v:
Frontiers in Optics / Laser Science.
We measure nonlinear absorption in semiconductors using nanosecond and picosecond CO2 laser pulses. Absorption strength scales inversely with band gap energy. Effective absorption coefficients in n-Ge are unchanged over intensities from 0.1-2 GW/cm2.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e3f8a347273b308f690bcf941e26789
https://doi.org/10.1364/fio.2020.jw6a.15
https://doi.org/10.1364/fio.2020.jw6a.15
Publikováno v:
Frontiers in Optics / Laser Science.
We report interferometric measurements of the resonant nonlinearity of CO and CO2 gas using a continuously tunable, multiatmosphere CO2 laser. The implications of these measurements to atmospheric nonlinear optics will be discussed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adeb0b30ad8806cb75a444bdfee48aaa
https://doi.org/10.1364/fio.2020.fw7f.8
https://doi.org/10.1364/fio.2020.fw7f.8
Autor:
Vladimir V. Fedorov, Krishna Karki, S. Ya. Tochitsky, S. B. Mirov, G. J. Louwrens, Ilan Ben-Zvi, Dmitri V. Martyshkin, Jeremy Pigeon, D. Tovey, C. Joshi
Publikováno v:
Conference on Lasers and Electro-Optics.
Time- and frequency-resolved measurements of resonant nonlinear refraction of mid-IR radiation by CO and CO2 gas reveal a fast optical nonlinearity that is dominated by powerbroadening resulting in sign reversals of the nonlinear refractive index.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::540aa61f1fc74f35ba4ffa0e2274ac19
https://doi.org/10.1364/cleo_qels.2020.fth3a.5
https://doi.org/10.1364/cleo_qels.2020.fth3a.5
Autor:
Jeremy Pigeon, S. Ya. Tochitsky, Vladimir V. Fedorov, S. B. Mirov, D. Tovey, Dmitri V. Martyshkin, G. J. Louwrens, C. Joshi, Krishna Karki, Ilan Ben-Zvi
Publikováno v:
Conference on Lasers and Electro-Optics.
Gain dynamics in a 10 pm CO2 amplifier pumped by a 4.3 pm Fe:ZnSe laser are studied. Measured gain coefficients reached 30%/cm, indicating potentially high efficiency for short pulse amplification.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0a6279d823b37009bb0a331557e64b9
https://doi.org/10.1364/cleo_si.2020.sm3e.3
https://doi.org/10.1364/cleo_si.2020.sm3e.3
Autor:
Jeremy Pigeon, Miroslav Kolesik, Sergei Tochitsky, Paris Panagiotopoulos, Ewan M. Wright, E. C. Welch, Igor Pogorelsky, Chan Joshi, Jerome V. Moloney, Mikhail Polyanskiy, Stephan W. Koch
Publikováno v:
Nature Photonics. 13:41-46
The diffraction-compensated propagation of high-power laser beams in air could open up new opportunities for atmospheric applications such as remote stand-off detection, long-range projection of high-energy laser pulses and free-space communications.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9a2ba310e66fcedbe511081a1d2026f
https://doi.org/10.1038/s41566-018-0315-0
https://doi.org/10.1038/s41566-018-0315-0
Autor:
Dmitri V. Martyshkin, Ilan Ben-Zvi, S. B. Mirov, D. Tovey, Jeremy Pigeon, Vladimir V. Fedorov, Krishna Karki, S. Ya. Tochitsky, C. Joshi, G. J. Louwrens
Publikováno v:
2019 IEEE Research and Applications of Photonics in Defense Conference (RAPID).
We present time- and frequency-resolved measurements of self-focusing and self-defocusing of 4.3–4.8 μm Fe:ZnSe laser pulses tuned near rovibrational transitions of CO 2 And CO. We estimate the resonant nonlinearity of the air at 4.3 μm and discu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a64b4c5ba6764fa73e554324c07b6ba4
https://doi.org/10.1109/rapid.2019.8864352
https://doi.org/10.1109/rapid.2019.8864352