二极管泵浦全固态589 nm脉冲激光器
Diode pumped all-solid-state pulsed 589 nm laser
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摘要: 报道了一台二极管激光器(DL)泵浦的全固态Nd:YAG和频激光器,激光是由Nd:YAG晶体的1 064 nm 和1 319 nm 谱线外腔和频产生，以6 mm×6 mm×12 mm KTP为和频晶体,采用Ⅱ类临界相位匹配, 在400 Hz重复频率下，当分别注入3.05 W和2.46 W的1 064 nm和1 319 nm调Q脉冲到KTP晶体时，和频最大输出达到了1.3 W，脉宽为35 ns，线宽优于3 GHz，和频效率达到了23.5％, 光束质量因子分别为1.84和1.93。实验结果表明采用激光二极管阵列泵浦Nd:YAG/ KTP 腔外和频技术是获得黄激光的高效方法, 并通过精确控制谐振腔内标准具的倾角与温度，和频输出波长可精确调谐到Na D2线。Abstract: A DL-pumped Nd:YAG all-solid-state sum-frequency laser is presented. Efficient sum-frequency mixing 1 064 nm and 1 319 nm in a 6 mm×6 mm×12 mm KTP crystal is obtained by extra-cavity sum-frequency. Type Ⅱ critical phase-match(CPM) is realized by controlling the temperature of the KTP crystal. By injecting 3.05 W and 2.46 W of 1 064 nm and 1 319 nm Q-switched radiation, respectively, into the KTP crystal, 1.3 W of sum-frequency maximum output is generated with a pulse repetition rate of 400 Hz and pulse duration of about 35 ns, narrowband less than 3 GHz,efficiency up to 23.5%.The beam quality factor of 589 nm laser was 1.84,1.93 in parellel and perpendicular direction, respectively. Experimental results show that the extra-cavity sum-frequency mixing is an effective method for obtaining
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Key words:
- all-solid-state laser /
- extra-cavity sum-frequency /
- narrow band /
- yellow light
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