Sub-Doppler spectroscopy with an external cavity quantum cascade laser
Sub-Doppler spectroscopy with an external cavity quantum cascade laser
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DOI：
10.1007/s00340-013-5410-9
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发表时间：
2013-04
期刊：
影响因子：
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通讯作者：
R. Walker;J. Kirkbride;J. H. Helden;D. Weidmann;G. Ritchie
中科院分区：
文献类型：
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作者：
R. Walker;J. Kirkbride;J. H. Helden;D. Weidmann;G. Ritchie
研究了外腔量子级联激光器的线宽与注入电流和激光扫描速率的关系。激光线宽被推断为ca。2.5 MHz从兰姆浸渍光谱上的低压样品的NO和其随注入电流的变化是很好地模拟使用文献值的固有材料性质的激光介质。激光线宽测量证实了偏振光谱研究，以及通过分析超精细结构和交叉共振。
The linewidth of an external cavity quantum cascade laser is studied as a function of injection current and laser scan rate. The laser linewidth is inferred to be ca. 2.5 MHz from Lamb-dip spectra on a low pressure sample of NO and its variation with injection current is well modeled using literature values for the intrinsic material properties of the lasing medium. The laser linewidth measurements are corroborated by polarization spectroscopy studies as well as by analysis of hyperfine structure and cross-over resonances.