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首页> 外文期刊>Optics Letters >Frequency stability of a 10 GHz optical frequency comb from a semiconductor-based mode-locked laser with an intracavity 10,000 finesse etalon
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Frequency stability of a 10 GHz optical frequency comb from a semiconductor-based mode-locked laser with an intracavity 10,000 finesse etalon

机译：具有腔内10,000个精密标准具的基于半导体的锁模激光器发出的10 GHz光频率梳的频率稳定性

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摘要

An optical frequency comb is constructed using a semiconductor gain medium with a fiber-coupled external cavity and stabilized to an intracavity 10,000 finesse etalon, which is temperature stabilized and held in a vacuum chamber at 10~(-6) Torr. Optical frequency stability measurements show that the comb has a reduced sensitivity to environmental fluctuations. An upper limit on the optical frequency variation of 100 kHz over >12 min of continuous operation is measured using a real-time spectrum analyzer. This measurement is limited by the linewidth of the reference source, and further measurements with a frequency counter show a fractional deviation of 2 × 10~(-11) at 50 ms. Furthermore, out-of-band ASE rejection is shown to be >36 dB, a tenfold improvement over that of a laser with a 1000 finesse FPE.
机译：使用带有光纤耦合外腔的半导体增益介质构建光频率梳，并将其稳定到腔内10,000精细标准具，将其稳定并保持在10〜（-6）托的真空室中。光学频率稳定性测量表明，梳子对环境波动的敏感性降低。使用实时频谱分析仪测量连续运行> 12分钟时100 kHz的光学频率变化的上限。此测量受到参考源线宽的限制，并且使用频率计数器进行的进一步测量显示，在50毫秒处的分数偏差为2×10〜（-11）。此外，带外ASE抑制显示> 36 dB，比具有1000精细FPE的激光器高十倍。

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