Large-size Ho:Tm:YLF crystal grown by the Czochralski method - Details

Author：

Ma, Xiaoming (Ma, Xiaoming.) | Wang, Yongguo (Wang, Yongguo.) | Yao, Baoquan (Yao, Baoquan.) | Cui, Yanjun (Cui, Yanjun.) | Mo, Xiaogang (Mo, Xiaogang.)

Indexed by：

EI Scopus PKU CSCD

Abstract：

The　causes　of　the　floating-debris　on　the　surface　of　Ho:Tm:YLF　melt,　the　scattering　particles　and　the　crack　of　Ho:Tm:YLF　crystal　during　the　Czochralski　growth　are　analyzed　in　this　paper.　Through　elaborately　designing　of　the　symmetry　temperature　field,　and　adjusting　temperature　gradient　and　the　crystal　growth　process　parameters,　the　scattering　particles　and　the　crack　of　the　crystal　are　eliminated　effectively.　The　growth　atmosphere　with　a　certain　volume　CF4　contributes　to　decreasing　the　floating-debris　on　the　melt　surface　effectively,　and　the　influence　of　the　floating-debris　on　the　normal　crystal　growth　are　overcome.　By　above　technique　ways,　high-quality　Ho:Tm:YLF　crystals　with　the　size　of　φ(25-30)　mm×(100-120)　mm　are　grown.　The　laser　performance　test　of　Ho:Tm:YLF　crystal　shows　that　under　LD　double-end-pumped　conditions　more　than　10　W　laser　at　2.05　μm　is　achieved,　and　the　laser　slope　efficiency　reaches　41.2%,　optical-to-optical　efficiency　reaches　36.4%.

Keyword：

Crystal symmetry Debris Materials Optically pumped lasers Pumping (laser) Crystal growth from melt Efficiency Temperature Crystal growth YLF lasers

Author Community：

[ 1 ] [Ma, Xiaoming]Beijing Opto-Electronics Technology Co. Ltd., Beijing 100015, China
[ 2 ] [Ma, Xiaoming]Laser Department, Beijing University of Technology, Beijing 100022, China
[ 3 ] [Wang, Yongguo]Beijing Opto-Electronics Technology Co. Ltd., Beijing 100015, China
[ 4 ] [Yao, Baoquan]Institute of Electronic Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
[ 5 ] [Cui, Yanjun]Beijing Opto-Electronics Technology Co. Ltd., Beijing 100015, China
[ 6 ] [Mo, Xiaogang]Beijing Opto-Electronics Technology Co. Ltd., Beijing 100015, China