Characterization of a multi-kW, large-aperture gas-cooled Faraday rotator
We characterize a large-aperture gas-cooled Faraday rotator (FR) designed to mitigate stress-induced depolarization in high-energy, high-power laser systems. The rotator, based on ceramic TGG, was tested using a 150 mW probe beam at 1047 nm and a pump beam at 1070 nm. Compensating for the birefringence induced by the surrogate depolarization plate at 3.3 kW of effective pump power, the rotator reduces the spatially in-homogeneous depolarized light containing linear, circular, and elliptical polarization states to nearly linear with approximately 0.8% (or -21 dB) of residual depolarized energy. The FR demonstrated effective depolarization compensation across its 58×58 mm<sup>2</sup> aperture.
Authors
- František Batysta (ORCID: https://orcid.org/0000-0003-1345-6245)
- Emily Erdman (ORCID: https://orcid.org/0000-0002-3946-6436)
- Kathleen I. Schaffers
- Anthony T. Vella (ORCID: https://orcid.org/0000-0003-4600-5504)
- Thomas Galvin (ORCID: https://orcid.org/0009-0006-6501-574X)
- David J. Gibson (ORCID: https://orcid.org/0000-0002-0308-7506)
- David G. Scerbak
- Katherine Velas
- Thomas Spinka
- C. Heinbockel (ORCID: https://orcid.org/0000-0003-2257-5342)
- Jakub Novák (ORCID: https://orcid.org/0000-0003-4903-2479)
- A.J. Bayramian
- Conor Byrne (ORCID: https://orcid.org/0000-0002-1010-911X)
- Emily Sistrunk Link
- Joseph Mambourg
- Paul Rosso
- B. Rus
- Mike Torrance
Institutions
- ElSohly Laboratories (United States) (US)
- Fujikura (United States) (US)
- Coherent (United States) (US)
Publication Details
- Journal
- Optics Express
- Published
- 2025-01-29
- DOI
- https://doi.org/10.1364/oe.551390
- Citations
- 4
- Primary Topic
- Magneto-Optical Properties and Applications
- Type
- article
- Field-Weighted Citation Impact
- 2.92
Funders
- U.S. Department of Energy
- Akademie Věd České Republiky
- Lawrence Livermore National Laboratory