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arXiv 2104.07525physics.opticsphysics.app-phphysics.chem-ph
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Fabry-Pérot腔弱共振反馈对量子级联laser频率稳定的影响

Frequency stabilization of a quantum cascade laser by weak resonant feedback from a Fabry-Pérot cavity

Gang Zhao, Jianfei Tian, Joseph T. Hodges, Adam J. Fleisher

摘要:

稳频中红外激光器是精密分子光谱学的重要工具。然而,这些措施的执行仍然受到复杂的稳定计划的限制。在这里,我们实现了一个量子级联激光器的光学自锁到一个高度模式匹配的双镜腔的谐振泄漏场。其结果是一种简单的方法来实现高功率中红外激光器的超纯频率。对于短时间尺度(<0.1 ms),我们报告的线宽减少因子为$3\times10^{-6}$的线宽为12 Hz。此外,我们证明了双光子腔增强吸收光谱的N $_{2}$ O泛音跃迁附近的波长为4.53 $μ$ m。

英文摘要:

Frequency-stabilized mid-infrared lasers are valuable tools for precision molecular spectroscopy. However, their implementation remains limited by complicated stabilization schemes. Here we achieve optical self-locking of a quantum cascade laser to the resonant leak-out field of a highly mode-matched two-mirror cavity. The result is a simple approach to achieving ultra-pure frequencies from high-powered mid-infrared lasers. For short time scales (<0.1 ms), we report a linewidth reduction factor of $3\times10^{-6}$ to a linewidth of 12 Hz. Furthermore, we demonstrate two-photon cavity-enhanced absorption spectroscopy of an N$_{2}$O overtone transition near a wavelength of 4.53 $μ$m.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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