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Influence of the KTP crystal boundary temperature on conversion efficiency in high power green laser
被引：3
作者：
徐德刚
姚建铨
张百钢
赵士勇
周睿
丁欣
温午麒
王鹏
机构：
[1] College of Precision Instrument and Opto-Electronics Engineering Institute of Laser and Optoelectronics
[2] Cooperated Institute of Nankai University and Tianjin University
[3] Key Lab. of Optoelectric Information Science and Technology
[4] Ministry of Education
[5] Tianjin 300072
[6] Tianjin University
基金：
中国国家自然科学基金;
关键词：
KTP;
high;
D O I：
暂无
中图分类号：
TN248 [激光器];
学科分类号：
0803 ;
080401 ;
080901 ;
摘要：
The influence of the KTiOPO4 (KTP) crystal boundary temperature on conversion efficiency in high power green laser has been studied theoretically and experimentally. Temperature distribution inside the KTP crystal has been analyzed by solving the thermal conductivity equation. From the temperature distribution inside the KTP crystal, we have calculated the optimal phase-matching angles of the type-Ⅱ KTP crystal as a function of temperature. The second-harmonic conversion efficiency as a function of temperature has also been calculated. In the experiment, two KTP crystals with different phase-matching angles were used in the intrcavity-frequency-doubled resonator. When the boundary temperature of KTP-A (φ=23.6°, θ = 90° under the condition of 27 ℃ temperature) was setting at 4 ℃, a maximum green light power of 104 W was generated at repetition rate of 20.7 kHz and pulse width of 132 nm with pumping current of laser diode of 18.3 A, leading to 10.2% optical-to-optical conversion efficiency. When KTP
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页码：85 / 88
页数：4
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