Nanosecond electro-optically Q-switched Nd: YVO4 laser - Details

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Abstract：

A　novel　electro-optically　Q-switched　laser　with　short　cavity　was　demonstrated.　Its　optimal　structure　parameters　were　determined　via　the　analysis　of　factors　related　to　output　pulse　width.　Quasi-continuous　end-pumped　Nd:　YVO4　crystal　with　concentration　of　1.0　%　was　cut　along　Brewster　angle　in　a-axis,　in　order　to　ensure　polarized　oscillation.　Thus,　the　cavity　length　was　shortened　efficiently　due　to　the　omission　of　quarter　wave　plate　in　voltage-decreased　Q-switching　structure.　In　condition　of　20　mm　physical　cavity　length,　the　narrowest　output　pulse　width　of　1.049　ns,　pulse　energy　of　0.32　mJ　and　beam　quality　factor　of　1.9　were　achieved.

Keyword：

Neodymium Structural optimization Pumping (laser) Lasers Q switching

Author Community：

[ 1 ] [Zhang, Xiang]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Feng, Chi]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Xie, Xiying]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Yan, Lelun]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Lei, Hong]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Li, Qiang]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China