Results 221 to 230 of about 648 (272)

Internal reflections of the Gaussian beams in Faraday isolators

Applied Optics, 1997
The reflection coefficient of the Faraday isolator-mirror system in the presence of internal reflections of the incident Gaussian beam is theoretically and experimentally explored for three different architectures of a Faraday isolator. In every case, these internal reflections are shown to alter widely the behavior of the system.
J, Poirson, J C, Cotteverte, A, Le Floch, F, Bretenaker   +3 more
openaire   +2 more sources

Faraday isolator for a kilowatt-class pulsed laser

Laser Congress 2023 (ASSL, LAC), 2023
We report on the first-ever demonstration of a Faraday isolator for a large- aperture high-energy pulsed laser. The isolator exhibits a stable isolation ratio of 30.46 dB with the 100 J/10 Hz/10 ns pulses at 1030 nm.
David Vojna, Ondřej Slezák, Jan Pilař, Martin Divoký, Ondřej Denk, Martin Hanuš, Petr Navrátil, Martin Smrž, Antonio Lucianetti, Tomáš Mocek   +9 more
openaire   +1 more source

Magnetoactive media for cryogenic Faraday isolators

Journal of the Optical Society of America B, 2011
We analyzed a number of optical media, such as GGG, Nd:YAG, Yb:YAG, fused silica, CaF2, Yb:CaF2, and CdMnTe, that have not been used, to our knowledge, in the cryogenic Faraday isolator (FI) before. The temperature dependence of the Verdet constant and thermo-optical constants was experimentally investigated for λ=1.07 μm.
Aleksey V. Starobor, Dmitry S. Zheleznov, Oleg V. Palashov, Efim A. Khazanov   +3 more
openaire   +1 more source

TSAG-based cryogenic Faraday isolator

Optical Materials, 2015
Abstract Thermooptical and magnetooptical properties of novel magnetoactive crystal terbium–scandium aluminum garnet were investigated at temperature range 80–300 K. It is shown that Verdet constant increases inversely proportional to temperature, and thermally induced depolarization, and the optical power of the thermal lens is reduced significantly
Aleksey Starobor, Ryo Yasyhara, Ilya Snetkov, Evgeniy Mironov, Oleg Palashov   +4 more
openaire   +1 more source

A Faraday isolator with a square optical aperture

Optics Communications, 2015
Abstract A Faraday isolator with a square magneto-optical element is proposed and investigated. It is shown that the device has better isolation ratio and higher level of maximal operating power over conventional isolators with a round aperture when used in high-power laser systems with a square profile of beam intensity distribution.
Еvgeniy А. Mironov, Аlexey V. Starobor, Аlexander V. Voitovich, Оleg V. Palashov   +3 more
openaire   +1 more source

Faraday Rotation Optical Isolator for 106-μm Radiation

Applied Optics, 1974
Measurements that have been performed indicate that hot-pressed ferromagnetic CdCr(2)S(4) would be a useful Faraday optical isolator material for laser systems at 10.6 microm. A large-aperture, liquid-nitrogen-cooled isolator, requiring modest magnetic fields with material of optimum thickness, would provide isolation in excess of 30 dB with insertion ...
S D, Jacobs, K J, Teegarden, R K, Ahrenkiel   +2 more
openaire   +2 more sources

Faraday isolator for high-power nonpolarized radiation

Optics Communications, 2015
Abstract We propose a Faraday isolator scheme in which high-power nonpolarized radiation is divided into two orthogonally polarized beams that pass through one MOE. The experimentally confirmed advantage of the scheme is reduction of thermally induced depolarization due to mutual thermal action of the beams optimally spaced apart.
Aleksey Starobor, Oleg Palashov
openaire   +1 more source

Thermally Induced Distortions of Radiation in Multipass Faraday Isolators

O V Palashov
exaly   +2 more sources

All-Fiber Isolator Based on Faraday Rotation

Frontiers in Optics 2009/Laser Science XXV/Fall 2009 OSA Optics & Photonics Technical Digest, 2009
An all-fiber isolator with optical isolation of 18 dB is demonstrated. The fiber Faraday rotator uses 56-wt% terbium-doped silica fiber, and the fiber polarizers are Corning SP1060 single-polarization fiber.
L. Sun, S. Jiang, J. D. Zuegel, J. R. Marciante   +3 more
openaire   +1 more source

Cryogenic Faraday Isolator Based on TGG Ceramics

IEEE Journal of Quantum Electronics, 2014
A cryogenic Faraday isolator based on terbium-gallium garnet (TGG) ceramics has been designed and studied in experiments. Its performance capabilities at the laser radiation power of 435 W are demonstrated, and our models suggest that the isolator should perform up to 2 kW.
Alexey V. Starobor, Ryo Yasuhara, Dmitry S. Zheleznov, Oleg V. Palashov, Efim A. Khazanov   +4 more
openaire   +1 more source