Laser & Optoelectronics Progress, Volume. 58, Issue 19, 1914003(2021)
355 nm all-solid state ultraviolet laser with high stability end-pumped by 915 nm laser diode
A highly stable all-solid state ultraviolet laser with a center wavelength of 355 nm pumped by a laser diode (LD) with a center wavelength of 915 nm is demonstrated. LD with a central wavelength of 915 nm and linewidth of 5.3 nm is used as a pump source to end-pump Nd∶YVO4 crystal, and two LBO crystals are used as frequency doubling crystal and frequency tripling crystal in the laser. A stable all-solid state ultraviolet laser with a center wavelength of 355 nm is obtained by using V-shaped plane-convex unstable resonator structure and acousto-optic Q-switching mode. When the repetition rate is 30 kHz and the pump power is 45 W, the output power of the ultraviolet laser is 3.7 W, the pulse width is about 13 ns, optical-to-optical efficiency is 8.2%, the beam quality factor M2 is less than 1.2, and the output power stability (peak-to-peak value) is less than 4.5% in 6 hours of running time.
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jie Hou, Haixu Jia, Sula Baiya. 355 nm all-solid state ultraviolet laser with high stability end-pumped by 915 nm laser diode[J]. Laser & Optoelectronics Progress, 2021, 58(19): 1914003
Category: Lasers and Laser Optics
Received: Jan. 9, 2021
Accepted: Feb. 4, 2021
Published Online: Oct. 14, 2021
The Author Email: Jia Haixu (jiahaixu@163.com)