Laboratoire Charles Fabry, Institut d'Optique, CNRS, Univ Paris Sud, Palaiseau, France.
Opt Lett. 2013 Mar 15;38(6):995-7. doi: 10.1364/OL.38.000995.
We report on a high-power narrow-linewidth pulsed laser source emitting at a wavelength of 257 nm. The system is based on a master oscillator power amplifier architecture, with Yb-doped fiber preamplifiers, a Yb:YAG single crystal fiber power amplifier used to overcome the Brillouin limitation in glass fiber and nonlinear frequency conversion stages. This particularly versatile architecture allows the generation of Fourier transform-limited 15 ns pulses at 1030 nm with 22 W of average power and a diffraction-limited beam (M(2)<1.1). At a repetition rate of 30 kHz, 106 μJ UV pulses are generated corresponding to an average power of 3.2 W.
我们报告了一种高功率窄线宽脉冲激光源，其发射波长为 257nm。该系统基于主振荡器功率放大器结构，采用掺镱光纤预放大器、掺镱钇铝石榴石单晶光纤放大器，用于克服玻璃光纤中的布里渊限制和非线性频率转换级。这种特别通用的架构允许在 1030nm 处产生傅里叶变换限制的 15ns 脉冲，平均功率为 22W，光束为衍射极限（M(2)<1.1）。在 30kHz 的重复率下，产生了 106μJ 的紫外脉冲，对应于 3.2W 的平均功率。
