Versatile Digital GHz Phase Lock for External Cavity Diode Lasers
Quantum Physics
2010-11-02 v3 Instrumentation and Detectors
Abstract
We present a versatile, inexpensive and simple optical phase lock for applications in atomic physics experiments. Thanks to all-digital phase detection and implementation of beat frequency pre-scaling, the apparatus requires no microwave-range reference input, and permits phase locking at frequency differences ranging from sub-MHz to 7 GHz (and with minor extension, to 12 GHz). The locking range thus covers ground state hyperfine splittings of all alkali metals, which makes this system a universal tool for many experiments on coherent interaction between light and atoms.
Cite
@article{arxiv.0809.3607,
title = {Versatile Digital GHz Phase Lock for External Cavity Diode Lasers},
author = {Jürgen Appel and Andrew MacRae and A. I. Lvovsky},
journal= {arXiv preprint arXiv:0809.3607},
year = {2010}
}
Comments
4.5 pages, 5 figures v3: fixed error in schematic: R10 connects to other end of C4