Weihang Cao 1,2Zhengdong Dai 1,2Run Fang 1,2,3Zhongyu Wang 1,2[ ... ]Zhiping Cai 1,2,*
Author Affiliations
1 Department of Electronic Engineering, Xiamen University, Xiamen 361005, China
2 Fujian Key Laboratory of Ultrafast Laser Technology and Applications, Xiamen University, Xiamen 361005, China
3 School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001, China
We report continuous-wave deep red lasers at 696.6 and 698.6 nm in a Pr3+:YLF crystal pumped by an InGaN laser diode. A Lyot filter was inserted into the cavity as a birefringent filter to select wavelength; the lasers at 696.6 and 698.6 nm were obtained with a maximum output power of 1.36 and 3.11 W, separately. To the best of our knowledge, the output powers of these two lasers are the highest to date, and this is the first scaling of the output power of the Pr3+:YLF laser to the watt level at around 696 nm. In addition, the corresponding theoretical analysis and simulation were carried out to explain the experimental phenomena.
Pr3+:YLF crystal deep red lasers Lyot filter 
Chinese Optics Letters
2023, 21(4): 041404

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