Chinese Journal of Lasers, Vol. 46, Issue 9, 0901010 (2019)
A High-Frequency All-Solid-State Ultraviolet Laser at 244 nm
Wang Jinyan1, Li Qi1, Chen Xi1,*, Zheng Quan1,2, Li Shijie1, and Chen Lei1
- 1 Changchun New Industries Optoelectronics Technology Co., Ltd., Changchun, Jilin 130103, China
- 2 Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China
An all-solid-state ultraviolet 244 nm laser by external cavity double-frequency is designed. Via V-shaped folded-cavity and actively Q-switched technique, the 914 nm and 1047 nm fundamental frequency beams pumped by the double diode arrays are used for intracavity sum frequency generation of a 488 nm high-frequency pulse laser. At the total pumping power of 44 W, the 488 nm laser output power is 527 mW. Using type I phase-matched BBO crystal, the 244 nm deep ultra-violet laser with an average output power of 28 mW is achieved. The repeat rate is 4 kHz with a pulse width of 17.8 ns, and the frequency-doubling conversion efficiency is 5.3%.
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