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Investigation of spectrally-dependent phonon relaxation mechanism in Yb:YAG gain media and its consequences for thin disk laser performance
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SYSNO ASEP 0525181 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Investigation of spectrally-dependent phonon relaxation mechanism in Yb:YAG gain media and its consequences for thin disk laser performance Author(s) Severová, Patricie (FZU-D) RID, ORCID
Nagisetty, Siva S. (FZU-D)
Chyla, Michal (FZU-D) RID, ORCID
Miura, Taisuke (FZU-D) RID
Endo, Akira (FZU-D) RID
Smrž, Martin (FZU-D) RID, ORCID
Mocek, Tomáš (FZU-D) RID, ORCID, SAINumber of authors 7 Article number 025005 Source Title Laser Physics - ISSN 1054-660X
Roč. 30, č. 2 (2020), s. 1-8Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords Yb:YAG ; thin disks and slabs ; high-power laser diode pumping Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects EF15_006/0000674 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LO1602 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2015086 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 000520136100001 EID SCOPUS 85082498467 DOI 10.1088/1555-6611/ab602a Annotation Nonlinear phonon relaxation in Yb:YAG gain media has previously been investigated, and a hypothesis correlating photo-induced free electrons and heat generation in crystals pumped at a wavelength of 940 nm was established (Brandt et al 2011 Appl. Phys. B 102 765–8). Later, we demonstrated efficient suppression of nonlinear phonon relaxation by zero-phonon line (ZPL) pumping of Yb:YAG (969 nm). However, no hypothesis has yet been tested that correlates the heat load and the free electrons in Yb:YAG media. We investigate, both theoretically and experimentally, the behaviour of an Yb:YAG slab pumped by a high-power laser diode at a conventional broadband line (absorption maximum at 941 nm) and a ZPL (absorption maximum at 969 nm), and we compare the generated photocurrent, temperature, and absorbed pump power for those two pump wavelengths.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2021 Electronic address http://hdl.handle.net/11104/0309378
Number of the records: 1