采用大功率光电二极管阵列实现激光功率的噪声限制稳定。

Shot-noise-limited laser power stabilization with a high-power photodiode array.

机构信息

Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), 30167 Hannover, Germany.

出版信息

Opt Lett. 2009 Oct 1;34(19):2912-4. doi: 10.1364/OL.34.002912.

DOI:10.1364/OL.34.002912

PMID:19794765

Abstract

The output power of a cw Nd:YAG laser was stabilized in a dc-coupled feedback loop with a low-noise multiphotodiode detector and an electro-optic amplitude modulator in the frequency band from 1 Hz to 1 kHz. For the first time, to our knowledge, an independently measured relative power noise of 2.4 x 10(-9) Hz(-1/2) at 10 Hz was achieved, fulfilling the power stability requirements of the Advanced LIGO (Laser Interferometer Gravitational-Wave Observatory) gravitational wave detector.

摘要

连续波 Nd:YAG 激光的输出功率在一个直流耦合反馈环路中得到稳定，该环路采用低噪声多光电二极管探测器和电光幅度调制器，频率范围为 1 Hz 至 1 kHz。据我们所知，这是首次在 10 Hz 时实现了 2.4×10(-9) Hz(-1/2)的独立测量相对功率噪声，满足了高级 LIGO（激光干涉引力波天文台）引力波探测器的功率稳定性要求。