J. Ringot et al., Generation of phase-coherent laser beams for Raman spectroscopy and cooling by direct current modulation of a diode laser, EUR PHY J D, 7(3), 1999, pp. 285-288
A setup for generation of GHz side-bands by direct current modulation of a
diode laser is described. The first order side-bands are used to inject two
slave power diode lasers, in order to produce phase coherent, controllable
frequency shifted, light beams, the mutual phase coherence of which has be
en verified (beat-note FWHM of 1 Hz, instrumentally limited). Some possible
applications in the context of laser Raman cooling of cesium atoms are bri
efly discussed.