Power stabilization of a diode laser with an acousto-optic modulator

Abstract

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 $2.2\times 10^{-8}$ 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 $6\times 10^{-7}$ at 100 s averaging time. Above 100 s the instability increases and reaches $2\times 10^{-6}$ at 10 000 s.

References in corpus (8)

• Interference-filter-stabilized external-cavity diode lasers
• High-performance coherent population trapping clock with polarization modulation
• A high-performance Raman-Ramsey Cs vapor cell atomic clock
• Auto-Balanced Ramsey Spectroscopy
• Dick effect in a pulsed atomic clock using Coherent Population Trapping
• Generalized auto-balanced Ramsey spectroscopy of clock transitions
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• A two-frequency acousto-optic modulator driver to improve the beam pointing stability during intensity ramps

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