Fiber-comb-stabilized light source at 556 nm for magneto-optical trapping of ytterbium
Abstract
A frequency-stabilized light source emitting at 556 nm is realized by frequency-doubling a 1112-nm laser, which is phase-locked to a fiber-based optical frequency comb. The 1112-nm laser is either an ytterbium (Yb)-doped distributed feedback fiber laser or a master-slave laser system that uses an external cavity diode laser as a master laser. We have achieved the continuous frequency stabilization of the light source over a five-day period. With the light source, we have completed the second-stage magneto-optical trapping (MOT) of Yb atoms using the 1S0 - 3P1 intercombination transition. The temperature of the ultracold atoms in the MOT was 40 uK when measured using the time-of-flight method, and this is sufficient for loading the atoms into an optical lattice. The fiber-based frequency comb is shown to be a useful tool for controlling the laser frequency in cold-atom experiments.
Keywords
Cite
@article{arxiv.1005.3152,
title = {Fiber-comb-stabilized light source at 556 nm for magneto-optical trapping of ytterbium},
author = {Masami Yasuda and Takuya Kohno and Hajime Inaba and Yoshiaki Nakajima and Kazumoto Hosaka and Atsushi Onae and Feng-Lei Hong},
journal= {arXiv preprint arXiv:1005.3152},
year = {2015}
}
Comments
18 pages, 6 figures, submitted to and accepted by J. Opt. Soc. Am. B (ID 125081)