Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Shadi Naderi"'
Publikováno v:
AIAA Scitech 2020 Forum.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a27307034fd7fdf9418d74aa65104f51
https://doi.org/10.2514/6.2020-0722
https://doi.org/10.2514/6.2020-0722
Publikováno v:
Fiber Lasers XIV: Technology and Systems.
The development of high-power fiber lasers is of great interest due to the advantages they offer relative to other laser technologies. Currently, the maximum power from a reportedly single-mode fiber amplifier stands at 10 kW. Though impressive, this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33dd3330c5d62eba3f98c32e1eac0293
https://doi.org/10.1117/12.2255019
https://doi.org/10.1117/12.2255019
Publikováno v:
SPIE Proceedings.
The physics of high brightness, high-power lasers present a variety of challenges with respect to simulation. The Air Force Research Laboratory is developing high-fidelity models for Yb-doped, Tm-doped, and Raman fiber amplifiers, hollow-core optical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46d582684ef4a17d3cc1e106a0a1942c
https://doi.org/10.1117/12.2265048
https://doi.org/10.1117/12.2265048
Publikováno v:
SPIE Proceedings.
Cladding-pumped Raman fiber amplifiers (RFA) have been proposed as gain media to achieve power scaling. It is well-known that the onset of the modal instability (MI) phenomenon is a limiting factor for achieving higher output powers in Yb-doped fiber
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d0428f98202cc1d143d2bdfa327c7a4
https://doi.org/10.1117/12.2083038
https://doi.org/10.1117/12.2083038
Publikováno v:
Frontiers in Optics 2015.
It is well-known that the modal instability is a limiting factor in achieving high power in Yb-doped fiber amplifiers. We investigate this phenomenon theoretically in cladding-pumped and core-pumped Raman fiber amplifiers.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1acadb00db984eb4cd0e0f76061c134
https://doi.org/10.1364/fio.2015.fth2f.3
https://doi.org/10.1364/fio.2015.fth2f.3
Publikováno v:
SPIE Proceedings.
We present, using numerical simulations, investigations of the modal instability thresholds in high-power Yb-doped fiber amplifiers. We use a time-dependent temperature solver coupled to the optical fields and population inversion equations to determ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3276d5817459e3b98187873c40d8b9b5
https://doi.org/10.1117/12.2044143
https://doi.org/10.1117/12.2044143
Publikováno v:
Fiber Lasers X: Technology, Systems, and Applications.
We present a detailed time-dependent numerical model of the modal instability phenomenon observed in Yb-doped fiber amplifiers. The thermal effects are captured by solving the heat equation in polar coordinate using a 2D, second-order, time-dependent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9358f2c90cd8eadebbf8b2c3641b80ce
https://doi.org/10.1117/12.2006571
https://doi.org/10.1117/12.2006571
Autor:
Ben Pulford, Clint Zernigue, Craig Robin, Shadi Naderi, Ann Lanari, Angel Flores, Iyad Dajani
Publikováno v:
Fiber Lasers X: Technology, Systems, and Applications.
We present experimental and theoretical studies on the stimulated Brillouin scattering (SBS) threshold in fiber amplifiers seeded with a spectrally broadened single-frequency laser source. An electro-optic phase modulator is driven with various pseud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73b5b54ba30acfac929099c40fd3a766
https://doi.org/10.1117/12.2004486
https://doi.org/10.1117/12.2004486
Autor:
Shadi Naderi, Angel Flores, Craig Robin, Christopher Vergien, Iyad Dajani, Jean-Claude Diels, Benjamin G. Ward
Publikováno v:
SPIE Proceedings.
We present a detailed study of power scaling in polarization-maintaining Raman fiber amplifiers operating at 1178 nm since this wavelength can be frequency doubled into 589 nm for sodium guide star applications. We confirm experimentally that the opt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e63da538e826f18cd6d04bf96ad84331
https://doi.org/10.1117/12.2006946
https://doi.org/10.1117/12.2006946
Publikováno v:
Optics Express. 24:16550
Raman fiber lasers have been proposed as potential candidates for scaling beyond the power limitations imposed on near diffraction-limited rare-earth doped fiber lasers. One limitation is the modal instability (MI) and we explore the physics of this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26521ba2662507fdd786cf04bce26e8d
https://doi.org/10.1364/oe.24.016550
https://doi.org/10.1364/oe.24.016550