Stabilization of a high-power diode-side-pumped intracavity-frequency-doubled CW Nd:YAG laser by compensating for thermal lensing of a KTP crystal and Nd:YAG rods

Author

Kojima, Tetsuo ; Fujikawa, Shuichi ; Yasui, Koji

Author_Institution

Adv. Technol. R&D Center, Mitsubishi Electr. Corp., Hyogo, Japan

Volume

35

Issue

3

fYear

1999

fDate

3/1/1999 12:00:00 AM

Firstpage

377

Lastpage

380

Abstract

We have analyzed the stability of a high-power diode-side-pumped intracavity-frequency-doubled CW Nd:YAG laser. It is found that large green power fluctuations observed experimentally are suppressed by compensating thermal lensing of the nonlinear crystal KTP and that of the Nd:YAG rods with an advanced resonator design. Stable CW green powers of 27 W with a beam quality of M²=8 and 16 W with M ²=1.2 (TEM₀₀-mode) were generated

Keywords

fluctuations; laser cavity resonators; laser modes; laser stability; neodymium; optical harmonic generation; optical pumping; solid lasers; 27 W; KTP crystal; KTiOPO₄; Nd:YAG rods; TEM₀₀-mode; YAG:Nd; YAl5O12:Nd; advanced resonator design; beam quality; compensating thermal lensing; high-power diode-side-pumped intracavity-frequency-doubled CW Nd:YAG laser stabilisation; large green power fluctuations; nonlinear crystal; stable CW green powers; thermal lensing; Diodes; Fluctuations; Laser stability; Mirrors; Optical resonators; Power generation; Pump lasers; Semiconductor laser arrays; Solid lasers; Stability analysis;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.748843

Filename

748843