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

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arxiv 0809.3763 v1 pith:JRKPFZ4N submitted 2008-09-22 physics.optics physics.atom-ph

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

J. Le Gou\"et , J. Kim , C. Bourassin-Bouchet , M. Lours , A. Landragin , F. Pereira Dos Santos This is my paper
classification physics.optics physics.atom-ph
keywords laserphase-lockedbandwidthintra-cavitymodulatornoisephaseapplied
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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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