1 December 1996 Diode-laser-pumped 1.065-um Nd:Sr5(VO4)3F laser and its intracavity frequency doubling
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Nd:Sr5(VO4)3F, known as Nd:S-VAP, is a new material for efficient and miniature diode-pumped solid state lasers. By using a laserdiode pump operating at 809 nm, Nd:S-VAP is successfully lased at 1.065 ?m. A slope efficiency of 43.5% and a laser threshold of only 11 mW are measured. The theoretical formulas for threshold power and slope efficiency are written and the theoretical calculations are in agreement with the experimental results. In addition, by using KTP as an intracavity-doubling crystal, the intracavity frequency of the Nd:S-VAP laser at 0.5325 ?m is also realized. The threshold power is 13.2 mW and the TEM00 mode green laser output power is 25.6 mW at 200 mW incident pump power, corresponding to an optical efficiency of 12.8%. In addition a way to improve efficiency is discussed.
Shengzhi Zhao, Qingpu Wang, Xingyu Zhang, Songtao Wang, Lu Zhao, Lianke Sun, Shaojun Zhang, "Diode-laser-pumped 1.065-um Nd:Sr5(VO4)3F laser and its intracavity frequency doubling," Optical Engineering 35(12), (1 December 1996). https://doi.org/10.1117/1.601093 . Submission:

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