An Efficient Watt-Class Intracavity Frequency Doubled Cr,Nd:YAG/KTP Miniature Green Laser

Author

Sheng-Chuang Bai ; Jun Dong ; Xiao Zhou

Author_Institution

Dept. of Electron., Xiamen Univ., Xiamen, China

Volume

25

Issue

9

fYear

2013

fDate

1-May-13

Firstpage

848

Lastpage

850

Abstract

The highly efficient performance of a Cr,Nd: YAG/KTP intracavity frequency doubled self-Q-switched miniature green laser is demonstrated at room temperature. The average output power of an over-1-W green laser at 531.5 nm is obtained at the absorbed pump power of 7.3 W. The slope efficiency and optical-to-optical efficiency are as high as 22.2% and 13.7%, respectively. The laser pulses with pulse width less than 6 ns, pulse energy of 12 μJ, and peak power of over 2 kW are achieved. The laser works from several to 76.5 kHz, depending on the pump power levels. A near diffraction limited laser beam with M² less than 1.5 is achieved in this miniature green laser.

Keywords

Q-switching; chromium; laser beams; neodymium; optical harmonic generation; solid lasers; yttrium; YAG-KTP:Cr,Nd; absorbed pump power; energy 12 muJ; frequency 76.5 kHz; intracavity frequency doubled self-Q-switched miniature green laser; laser beam; laser pulses; optical-to-optical efficiency; power 7.3 W; pulse energy; room temperature; slope efficiency; temperature 293 K to 298 K; wavelength 531.5 nm; Crystals; Laser beams; Laser excitation; Laser mode locking; Measurement by laser beam; Power lasers; Pump lasers; Cr,Nd:YAG; intracavity frequency doubled; laser-diode pumped; miniature lasers; self-Q-switched lasers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2013.2252006

Filename

6476639