材料科学
能量转换效率
光电子学
光纤激光器
激光器
纳秒
放大器
光学
兴奋剂
钕
激光束质量
包层(金属加工)
二次谐波产生
激光束
波长
CMOS芯片
物理
冶金
作者
Kilian Le Corre,H. Gilles,Sylvain Girard,Alexandre Barnini,Louanne Kervella,Pascal Guitton,Thierry Robin,Giorgio Santarelli,Mathieu Laroche
摘要
We present in this work, the development of a nanosecond pulsed Master-Oscillator Power-Amplifier (MOPA) laser system near 905 nm based on the 3-level transition of Neodymium using a novel low NA polarization-maintaining Nd-doped silica fiber with a 30µm core and 130µm cladding. The MOPA delivered up to 24 W of average power (0.6 mJ energy per pulse) with good beam quality (M²~1.4). Cascaded LBO and BBO crystals are used respectively for second-harmonic generation and fourth-harmonic generation, giving respectively average output powers of 4.9W at 452nm (conversion efficiency of 20%) and 550mW at 226nm (conversion efficiency of 10%).
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