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In-band pumped, Q-switched thulium-doped fiber laser system delivering 140 W and 7 mJ pulse energy.
- Source :
-
Optics letters [Opt Lett] 2024 Jul 15; Vol. 49 (14), pp. 4042-4045. - Publication Year :
- 2024
-
Abstract
- We report on a highly efficient, in-band pumped, Q-switched, Tm-doped, rod-type master oscillator power amplifier (MOPA) system delivering up to 140 W average output power and 7 mJ pulse energy with a slope efficiency of 77% at 20 kHz repetition rate. The amplifier is pumped with Raman-shifted fiber lasers centered at 1692 nm. This in-band pump scheme for Tm-doped fiber lasers can significantly mitigate their quantum defect-related heat load limitations. At the same time, this pump wavelength yields a similar amount of storable and extractable energy to the state-of-the-art pumping at 793 nm. This approach has allowed for the development of highly efficient Tm-doped fiber laser systems combining a high average power and a high output pulse energy.
Details
- Language :
- English
- ISSN :
- 1539-4794
- Volume :
- 49
- Issue :
- 14
- Database :
- MEDLINE
- Journal :
- Optics letters
- Publication Type :
- Academic Journal
- Accession number :
- 39008771
- Full Text :
- https://doi.org/10.1364/OL.528330