Pump distribution in a LD side-pumped disk laser - Details

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Abstract：

A　mathematic　model　of　the　laser　diode　array　(LDA)　side-pump　composite　crystal　Nd:YAG/YAG　disk　laser　is　set　up:　LDA　fast　axis　upright　to　disk　face　and　micro　lens　collimation　to　the　fast　axis.　Far-field　divergence　angle　of　the　slow　axis　by　calculation　and　simulation,　the　result　shows:　far-field　divergence　angle　of　the　slow　axis　approximately　Gaussian　distribution.　Study　shows　that　more　diode　lead　to　better　pumping　intensity　distribution;　the　least　absorption　coefficient　of　laser　medium,　the　best　pumping　intensity　distribution;　the　smaller　distance　between　diode　and　laser　medium,　the　worse　pumping　intensity　distribution.　The　phenomenon　can　be　seen　from　the　experiment　with　the　different　absorption　coefficient　of　Nd:YAG/YAG,　the　pumping　intensity　distribution　becomes　batter　when　there　is　0.6%　Nd　doped　instead　of　1%.　the　result　of　the　simulation　accords　with　that　of　the　experiment.

Keyword：

Pumping (laser) Semiconductor lasers Microlenses Diodes Laser Doppler velocimeters Neodymium lasers

Author Community：

[ 1 ] [Pang, Kai]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Han, Jun-Ting]College of Physical Science and Technology, Guangxi University, Nanning 530004, China
[ 3 ] [Li, Qiang]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Jiang, Meng-Hua]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 5 ] [Cai, Yan-Fang]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 6 ] [Liu, Bo]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 7 ] [Ding, Xiao-Ting]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China