A robust external cavity diode laser (ECDL) insensitive to mechanical vibration is built with an interference filter for selecting wavelength and a cat-eye reflector for light feedback. The free-running laser has a linewidth of 72 kHz. The laser frequency stability reaches 3x10<sup>-12</sup> at 1-s integration time in terms of relative Allan variance based on the saturation absorption spectrum.
© 2010 Chinese Optics Letters
(140.2020) Lasers and laser optics : Diode lasers
(350.2460) Other areas of optics : Filters, interference
(140.3425) Lasers and laser optics : Laser stabilization
(120.6085) Instrumentation, measurement, and metrology : Space instrumentation
Jun Ruan, Jie Liu, Jie Ma, Zhijing Du, Changjiang Wu, and Shougang Zhang, "Robust external cavity diode laser system with high frequency stability for Cs atomic clock," Chin. Opt. Lett. 8, 300-302 (2010)