A volume Bragg grating-based external cavity diode laser array produced more than 100 W output power for metastable argon atoms pumping centered at 811.53 nm with a 0.15 nm spectral linewidth (FWHM). The device has only 4.6 % loss compared to the free-running case operating at full power and a spectral contrast of 40 dB. The emission spectrum can be precisely tuned to 811.53 nm and has an over 200 pm tuning range. Pump absorption was demonstrated by using a repetitively pulsed glow discharge operating with 620 Torr Ar/He mixture, and an average absorption of 24 % of the pump radiation was realized.

中文翻译：

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一种用于亚稳态氩原子泵浦的线宽窄二极管激光器

基于体积布拉格光栅的外腔二极管激光器阵列产生超过 100 W 的输出功率，用于以 811.53 nm 为中心、光谱线宽 (FWHM) 为 0.15 nm 的亚稳态氩原子泵浦。与在全功率和 40 dB 光谱对比度下运行的自由运行情况相比，该器件的损耗仅为 4.6%。发射光谱可精确调谐至 811.53 nm，调谐范围超过 200 pm。通过使用 620 Torr Ar/He 混合物操作的重复脉冲辉光放电证明了泵浦吸收，并且实现了 24% 的泵浦辐射的平均吸收。