Study on the Focusing Position Effects in a Diode End-pumped Nd:YAG Laser

被引：0

作者：

Kim, Kyung Nam ^{[1
]}

Seo, Hyo Jeong ^{[1
]}

Kim, Ha Na ^{[1
]}

Ryu, Ji Wook ^{[1
]}

Kim, Yong Gi ^{[1
]}

Kim, Duk Hyeon ^{[2
]}

机构：

[1] Kongju Natl Univ, Dept Phys, Kong Ju 314701, South Korea

[2] Hanbat Natl Univ, Div Cultural Studies, Taejon 305719, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2010年 / 57卷 / 02期

关键词：

Nd:YAG; DPSS; End-pumping; Focusing position; YTTRIUM ALUMINUM GARNET; ND-YAG LASER; EFFICIENT NEODYMIUM; OPTIMIZATION; WAVELENGTHS; RADIATION; ARRAY; POWER;

D O I：

10.3938/jkps.57.349

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A multi-kHz high-repetition-rate laser-diode-pumped Nd:YAG laser was developed, and its lasing properties were demonstrated for laser optimization. The dependence of the output power on the pump beam's focusing position in the Nd:YAG crystal was determined. The optimum focusing position of the pump beam for efficient extraction of the diode's pump energy was confirmed to be 1 mm inside the laser crystal from the surface of the Nd:YAG. This focusing position is independent of the length of the laser crystal. The beam quality factor, M-2, was decreased from values of 2.8 similar to 2.9 to less than 1.3 in both the CW and the pulsed modes by insertion of a 500 similar to 600 mu m aperture inside the laser cavity. In second harmonic generation (SHG), we found that the output power and the pulse width were very sensitive to the LBO operating temperature. We confirmed that controlling the LBO crystal's temperature was very important for efficient and stable operation of the 532 nm laser.

引用

页码：349 / 354

页数：6

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