Robust tunable single-frequency operation of a diode laser by a self-pumped phase-conjugate reflector and a high-finesse filter

摘要

A novel form of extended-cavity diode laser attains robust tunable single-frequency operation with narrownlinewidth. The laser cavity includes a self-pumped photorefractive phase-conjugate reflector for wavelength-nadaptive narrowband feedback and a compact high-finesse tunable intracavity ring filter for single-nlongitudinal-mode selectivity and control. Its performance around 830 nm is verified with a simple Fabry–nPerot laser diode and by Doppler-free two-photon spectroscopy in atomic cesium. © 2008 Optical Society ofnAmerica