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http://dx.doi.org/10.3807/KJOP.2003.14.3.292

A study on the lasing characteristics of diode-pumped, single-mode Nd:YVO4 green laser  

이용우 (영남대학교 광전자 물리학과)
이종훈 (영남대학교 광전자 물리학과)
Publication Information
Korean Journal of Optics and Photonics / v.14, no.3, 2003 , pp. 292-297 More about this Journal
Abstract
A diode-pumped single-mode Nd:YV $O_4$ green laser was developed. Frequency doubling of the laser was achieved by using an intracavity KTP generated green beam (532 nm). By comparing the diode laser spectrum with absorption spectrum of the Nd:YV $O_4$ crystal, we found optimal operating temperature of the diode laser. From output power measured for various mirror curvatures and cavity lengths, we found the optimal matching of TE $M_{00}$ mode with the pump beam gives the best efficiency. When the pump power was 1.9 W, 80 ㎽ of TE $M_{00}$ mode green beam was obtained. We tried to get a single longitudinal mode lasing as the fluctuation of the laser power was caused by the shift of longitudinal modes and the beating between the modes. We tested the intracavity etalon method and birefringent filter method for single mode operation. The etalon method resulted in the best single mode output power of 60 ㎽. The power fluctuation of the single-mode laser was reduced to 1/10 of that of the multi-mode laser.
Keywords
Diode pumped solid state laser; single mode laser; green laser; etalon; birefringent filter;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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