Author(s): Miao, ZW (Miao, Zhang-Wang); Yu, HJ (Yu, Hai-Juan); Zou, SZ (Zou, Shu-Zhen); He, CJ (He, Chao-Jian); Zhao, PF (Zhao, Peng-Fei); Lou, BJ (Lou, Bo-Jie); Lin, XC (Lin, Xue-Chun)

Source: APPLIED PHYSICS B-LASERS AND OPTICS Volume: 127 Issue: 7 Article Number: 105 DOI: 10.1007/s00340-021-07652-3 Published: JUL 2021

Abstract: For fiber-coupled green laser-diode pump beam, a simple model was proposed to calculate the average outputs. Then we presented a direct-pumping continuous-wave Ti:Sapphire laser producing an optimized output of 3.8-W with green diodes. It was the highest output of this kind reported so far corresponding to an optical/optical conversion efficiency of 11.5% and a high slope efficiency of 15.7% at 810 nm. A highest power of 1.41-W was also obtained with the single-sided pumping corresponding to a good slope efficiency of 14.3%. High-power green diodes realized the lowest threshold pumping intensity of similar to 16.7 x 10(3) W/cm(2) under hundred-mu m-level beam diameter size. This work would benefit the design for the direct-pumping Ti:Sapphire laser as a guide.

Accession Number: WOS:000668891500001

ISSN: 0946-2171

eISSN: 1432-0649

Full Text: https://link.springer.com/article/10.1007/s00340-021-07652-3