Cascaded OPO based on single KTA crystal for 2.6 μm laser generation
-
摘要: 提出了一种新型的基于非临界相位匹配KTA晶体的自级联光参量振荡(OPO)激光技术。采用LD端面泵浦Nd:YVO4晶体实现1.06 m振荡,腔内泵浦按非临界相位匹配角度切割的KTA晶体,将KTA晶体初次OPO产生的1.5 m信号光封闭在腔内用作二次OPO的泵浦光,实现基于单块KTA晶体自级联OPO的转化。在输出功率8 W的808 nm波长半导体激光泵浦下获得输出功率超过400 mW、斜效率12.7%的2.6 m波长激光输出。结果表明基于单块KTA晶体的级联光参量振荡激光器可望成为获得脉冲2.5~2.7 m波段中红外激光的有效途径。Abstract: Cascaded OPO based on single non-critical phase matching KTA crystal was proposed. The fundamental oscillation at 1.06 m was achieved by LD end-pumped Nd: YVO4 crystal laser, then the non-critical phase matching cut KTA crystal was intra-cavity pumped. The 1.53 m signal light produced by KTA-OPO was confined in the OPO cavity to realize the second OPO conversion in the same KTA crystal. Under 8 W incident diode pump power at 808 nm, a power exceeding 400 mW and slope efficiency of 12.7% at 2.6 m were achieved based on cascaded OPO. Results show that the cascaded KTA-OPO is an efficient way to achieve 2.5-2.7 m pulsed laser.
-
Key words:
- 2.6 μm waveband /
- optical parametric oscillator /
- KTA crystal /
- non-critical phase match
-
点击查看大图
计量
- 文章访问数: 1012
- HTML全文浏览量: 264
- PDF下载量: 297
- 被引次数: 0
下载:
