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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 5 — Mar. 1, 2014
  • pp: 1145–1148

Terbium gallium garnet ceramic Faraday rotator for high-power laser application

Ryo Yasuhara, Ilya Snetkov, Alexey Starobor, Dmitry Zheleznov, Oleg Palashov, Efim Khazanov, Hoshiteru Nozawa, and Takagimi Yanagitani  »View Author Affiliations


Optics Letters, Vol. 39, Issue 5, pp. 1145-1148 (2014)
http://dx.doi.org/10.1364/OL.39.001145


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Abstract

A terbium gallium garnet (TGG) ceramic Faraday rotator (FR) with an isolation ratio of 33 dB was demonstrated at a laser radiation power of 257 W. This FR can be equipped with a large optical aperture by using ceramics technology to prevent laser damage at high-energy pulse operation. The thermal lens of a 257 W laser with a beam diameter of 2.6 mm had a focal length of 9.5 m, which is easily corrected using a spherical lens to suppress the undesirable effects of thermal lensing. The rotation angle of the FR was stabilized by water cooling. The results indicate that the TGG-ceramic-based FR is suitable for high-energy laser systems with high repetition rates.

© 2014 Optical Society of America

OCIS Codes
(140.6810) Lasers and laser optics : Thermal effects
(160.3820) Materials : Magneto-optical materials
(230.2240) Optical devices : Faraday effect
(230.3240) Optical devices : Isolators

ToC Category:
Optical Devices

History
Original Manuscript: October 22, 2013
Revised Manuscript: December 20, 2013
Manuscript Accepted: January 18, 2014
Published: February 20, 2014

Citation
Ryo Yasuhara, Ilya Snetkov, Alexey Starobor, Dmitry Zheleznov, Oleg Palashov, Efim Khazanov, Hoshiteru Nozawa, and Takagimi Yanagitani, "Terbium gallium garnet ceramic Faraday rotator for high-power laser application," Opt. Lett. 39, 1145-1148 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-5-1145


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