2018/08/31 by F. Tricot, D. H. Phung, M. Lours +2 · 1 citation
Physics and Astronomy · #physics.app-ph
paper · pdf · doi:10.1063/1.5046852
arxiv created 2018/10/23 · arxiv updated 2018/12/05
Laser power fluctuations can significantly reduce the device performances in various applications. High frequency fluctuations impact the signal-to-noise ratio, while slow variations can reduce the device repeatability or accuracy. Here we report experimental investigations on the power stabilization of a diode laser with an acousto-optic modulator. In the frequency domain the relative power noise is reduced at the level of 2.2× 10-8 Hz-1/2 in the range 1-100 kHz. The slow variations are studied in the time domain. The relative Allan standard deviation is measured at the level of 6× 10-7 at 100 s averaging time. Above 100 s the instability increases and reaches 2 × 10-6 at 10 000 s.