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- Title
Investigating frequency locking in Yb:YAG linearly polarized lasers with different pumping coupling ratios.
- Authors
Zhou, Pengfei; She, Kai; Li, Di; Huang, Yongcheng; Huang, Gang; Zhang, Tianshan; Li, Jianing; Lin, Zhanglang; Liao, Wenbin; Li, Bingxuan; Zhang, Ge
- Abstract
This paper explores the production of linearly polarized laser output in a diode-pumped Yb:YAG laser at various pumping coupling ratios. To investigate the polarization mode locking mechanism with various pump coupling ratios, variations in beat frequency and beam profiles associated with different polarization states were analyzed. The study confirmed that the emission of linearly polarized laser with different mode-matching coefficients results from the coherent superposition of two orthogonally polarized eigenmodes within the resonator. Importantly, the experiment showed that adjusting pump coupling ratios allows achieving linearly polarized emission. Notably, within a specific range, linearly polarized laser emission remains unaffected by pumping coupling ratios. Beam quality factor measurements reveal that the beam quality of linearly polarized laser, generated through coherent superposition, surpasses that of partially polarized laser, with all beam quality factors being less than 1.5.
- Subjects
LASER pumping; QUALITY factor; MODE-locked lasers; RESONATORS; SEMICONDUCTOR lasers; LASERS
- Publication
Applied Physics B: Lasers & Optics, 2024, Vol 130, Issue 7, p1
- ISSN
0946-2171
- Publication type
Article
- DOI
10.1007/s00340-024-08261-6