Abstract
We present results on the power stabilization of a Nd:YAG laser in the frequency band from 1 Hz to 100 kHz. High-power, low-noise photodetectors are used in a de-coupled control loop to achieve relative power fluctuations down to 5×10-9 Hz-1/2 at 10 Hz and 3.5 × 10 -9 Hz-1/2 up to several kHz, which is very close to the shot-noise limit for 80 mA of detected photocurrent on each detector. We investigated and eliminated several noise sources such as ground loops and beam pointing. The achieved stability level is close to the requirements for the Advanced LIGO gravitational wave detector.
| Original language | English |
|---|---|
| Pages (from-to) | 2000-2002 |
| Number of pages | 3 |
| Journal | Optics letters |
| Volume | 31 |
| Issue number | 13 |
| E-pub ahead of print | 20 Apr 2006 |
| DOIs | |
| Publication status | Published - 1 Jul 2006 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
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