Author Affiliations
Department of Electronic Engineering, School of Electronic Science and Engineering (National Model Microelectronics College), Xiamen University, Xiamen 361005, China
We present a study on a watt-level acousto-optically Q-switched Pr:YLF laser at three different repetition rates (10 kHz, 20 kHz, and 50 kHz) for the first time, to the best of our knowledge. The corresponding average output powers and pulse widths were measured to be 1.14 W, 1.2 W, and 1.32 W, and 40 ns, 52 ns, and 80 ns, respectively. A maximum pulse energy of 0.11 mJ was obtained, corresponding to a peak power of up to 2.8 kW at a repetition rate of 10 kHz. The simulated dynamics of a fast Q-switched Pr:YLF laser is in agreement with the experiment. The laser’s ability to generate stable pulses with high peak power and short pulse width makes it highly desirable for various practical applications, such as laser machining and material processing.
red pulsed laser Pr:YLF diode pump acousto-optical Q switching 
Chinese Optics Letters
2024, 22(1): 011402
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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