光学
材料科学
激光器
光纤激光器
纳秒
光纤
梁(结构)
光束
纤维
物理
激光束
复合材料
作者
Koji Tsubakimoto,Hidetsugu Yoshida,Noriaki Miyanaga
出处
期刊:Optics Letters
[The Optical Society]
日期:2017-08-17
卷期号:42 (17): 3255-3255
被引量:22
摘要
We describe a sub-nanosecond pulse laser system that delivers high-average-power green and ultraviolet (UV) light. This system includes a front end, two modules each of which has four photonic crystal fiber main amplifiers, two sets of coherent beam combiners with efficiencies of 83 and 90%, and two sets of harmonic converters. A single beam was ultimately produced through polarization-beam combining. The maximum average output power was 955 W at the fundamental wavelength (1040 nm) with a 10 MHz repetition rate and 285 ps pulse duration. The M-square of the UV was 1.3. The average power of each of its harmonics is 600 W in green (520 nm) and 300 W in UV (347 nm). The nonlinear crystals were longitudinally cooled by Peltier devices for efficient harmonic conversion.
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