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arXiv · 0809.3763

Wide bandwidth phase-locked diode laser with an intra-cavity electro-optic modulator

J. Le Gouët·J. Kim·C. Bourassin-Bouchet·M. Lours·A. Landragin·F. Pereira Dos Santos
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Abstract

Two extended cavity laser diodes are phase-locked, thanks to an intra-cavity electro-optical modulator. The phase-locked loop bandwidth is on the order of 10 MHz, which is about twice larger than when the feedback correction is applied on the laser current. The phase noise reaches -120 dBrad$^2$/Hz at 10 kHz. This new scheme reduces the residual laser phase noise, which constitutes one of the dominant contributions in the sensitivity limit of atom interferometers using two-photon transitions.

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J. Le Gouët, J. Kim, C. Bourassin-Bouchet, M. Lours, A. Landragin, F. Pereira Dos Santos. 2008-09-22. Wide bandwidth phase-locked diode laser with an intra-cavity electro-optic modulator. https://doi.org/10.1016/j.optcom.2008.11.055

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