Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), Hannover, Germany.
Opt Lett. 2011 Sep 15;36(18):3563-5. doi: 10.1364/OL.36.003563.
The power noise of a cw Nd:YAG laser system was measured at radio frequencies using the optical ac coupling technique. An additional mode cleaner in the setup allowed a high optical ac coupling amplification of 62.3. For the first time, to our knowledge, a sensitivity of 1.1×10⁻¹⁰ Hz(-1/2) relative power noise was achieved corresponding to an equivalent detected photocurrent of 32 A. High precision optics experiments can utilize this scheme to improve the sensitivity of their photodetectors.
采用光交流耦合技术测量了连续波 Nd:YAG 激光系统的功率噪声。在设置中增加一个额外的模式清洁器，允许进行高达 62.3 的高光学交流耦合放大。据我们所知，这是首次实现的灵敏度为 1.1×10⁻¹⁰ Hz(-1/2)相对功率噪声，对应于 32 A 的等效检测光电流。高精度光学实验可以利用此方案来提高其光电探测器的灵敏度。
