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

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

2008-09-22

arxiv.org/abs/0809.3763v1

Physics

Optics

11 pages, 3 figures

Scientific paper

10.1016/j.optcom.2008.11.055

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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