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arXiv 1506.06262physics.optics
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量子级联laser频率梳的本征线宽

Intrinsic linewidth of quantum cascade laser frequency combs

Francesco Cappelli, Gustavo Villares, Sabine Riedi, Jerome Faist

摘要:

研究了自由运转量子级联激光频率梳的频率噪声功率谱密度。在高频率下观察到一个平台,归因于由所有梳线上的总激光功率的Schawlow-Townes公式设定的量子噪声极限。在我们的实验中,测得的线宽为292 Hz的总功率为25 mW。这一结果证明,四波混频过程,负责梳状操作,有效地相关的量子噪声的个人梳线。

英文摘要:

The frequency noise power spectral density of a free-running quantum cascade laser frequency comb is investigated. A plateau is observed at high frequencies, attributed to the quantum noise limit set by the Schawlow-Townes formula for the total laser power on all comb lines. In our experiment, a linewidth of 292 Hz is measured for a total power of 25 mW. This result proves that the four-wave mixing process, responsible for the comb operation, effectively correlates the quantum noise of the individual comb lines.

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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