Thermal-stress-induced birefringence management of complex laser systems by means of polarimetry

0564270 - FZÚ 2023 RIV DE eng J - Journal Article
Slezák, Ondřej - Sawicka-Chyla, Magdalena - Divoký, Martin - Pilař, Jan - Smrž, Martin - Mocek, Tomáš
Thermal-stress-induced birefringence management of complex laser systems by means of polarimetry.
Scientific Reports. Roč. 12, č. 1 (2022), č. článku 18334. ISSN 2045-2322. E-ISSN 2045-2322
R&D Projects: GA MŠMT EF15_006/0000674
EU Projects: European Commission(XE) 739573 - HiLASE CoE
Grant - others:OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
Institutional support: RVO:68378271
Keywords : TIPCL * thermally-induced polarization * Mueller matrix
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 4.6, year: 2022
Method of publishing: Open access

The novel method of the thermally-induced polarization changes driven power losses (TIPCL) analysis in the complex laser systems has been developed. The measurement has been tested on the amplifier chain of the 100 J / 10 Hz laser system ‘Bivoj’ operated at HiLASE Centre. By the usage of the measured non-uniform Mueller matrix of the amplifier chain, the optimization of the ideal input and output polarization state has been calculated numerically. The results of the optimization have been applied to the laser system, thus reducing the TIPCL from originally observed more than 33% to 7.9% for CW beam and to 9% for pulsed laser beam, respectively. To the best of our knowledge, this result represents the most efficient TIPCL suppression method for complex laser systems so far. The method also allows the definition of the ideal fully polarized non-uniform pre-compensation of input beam consequently suffering from zero TIPCL.

Permanent Link: https://hdl.handle.net/11104/0335970