Performance of a large-aperture, gas-cooled Faraday rotator and its role in depolarization mitigation for the L3 HAPLS pump laser
We present a large-aperture, gas-cooled Faraday rotator designed to mitigate stress-induced depolarization in high-energy, high-power laser systems. Under a simulated depolarization load of 3.3 kW, the rotator effectively converted spatially inhomogeneous, depolarized light—comprising linear, circular, and elliptical polarization states—into a nearly linear polarization with only 1% residual depolarization. Integrating this rotator into the L3 HAPLS pump laser allowed us to fully utilize the pump diodes’ output, resulting in higher amplifier gain. More significantly, the rotator replaces a complex depolarization removal scheme, enabling stable, high-energy operation at a 3.3 Hz repetition rate.
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)
- Martin Cuhra
- 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)
- Petr Szotkowski
- A.J. Bayramian
- Conor Byrne (ORCID: https://orcid.org/0000-0002-1010-911X)
- Emily Sistrunk Link
- Mike Torrance
- Joseph Mambourg
- Leily S. Kiani
- Paul Rosso
- B. Rus
- Bohdana Lopushanska
- Lucia Jarboe
Institutions
- Lawrence Livermore National Laboratory (US)
- Extreme Light Infrastructure Beamlines (CZ)
- Coherent (United States) (US)
Publication Details
- Published
- 2025-06-03
- DOI
- https://doi.org/10.1117/12.3056601
- Primary Topic
- Magneto-Optical Properties and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00