Study of electro-optic Q-switched Nd:YVO4 laser with a wedge angle - Details

Author：

Zhang, Yunshen (Zhang, Yunshen.) | Chen, Meng (Chen, Meng.) | Pang, Qingsheng (Pang, Qingsheng.) | Chang, Liang (Chang, Liang.) | Li, Gang (Li, Gang.) (Scholars：李港)

Indexed by：

EI Scopus PKU CSCD

Abstract：

A　design　to　realize　electro-optic　Q-switch　in　Nd:YVO4　laser　without　polarizer　is　presented,　in　which　a　Nd:YVO4　crystal　with　a　wedge　angle　is　used　by　analyzing　the　polarization　of　natural　birefringent　crystal.　This　design　has　the　advantages　of　simplifying　cavity　components,　shortening　cavity　length,　and　reducing　cavity　loss,　and　can　obtain　higher　power　and　narrower　pulse　width.　Voltage-decreased　Q-switching　is　realized　by　using　a　La3Ga5SiO14　crystal　and　a　Nd:YVO4　crystal　with　the　size　of　3　mm　×　3　mm　×　5　mm,　10°　wedge　angle.　2.2　W　average　power,　6.3　ns　pulse　width,　optical-to-optical　efficiency　of　39.2%,　and　more　than　300　kW　peak　power　are　obtained　when　the　repetition　rate　is　1　kHz.

Keyword：

Q switching Yttrium compounds Silicon compounds Lasers Vanadium compounds Gallium compounds Neodymium compounds Lanthanum compounds Pulse repetition rate Light polarization

Author Community：

[ 1 ] [Zhang, Yunshen]College of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Chen, Meng]College of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Pang, Qingsheng]College of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Chang, Liang]College of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Li, Gang]College of Laser Engineering, Beijing University of Technology, Beijing 100124, China