Open AccessLow phase noise beams for Raman transitions with a phase modulator and a highly birefringent crystal
Author(s) -
Nieves Arias,
Vahide Abediyeh,
Saeed Hamzeloui,
E. Gómez
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.005290
Subject(s) - raman spectroscopy , optics , birefringence , polarization (electrochemistry) , interference (communication) , materials science , phase modulation , phase noise , phase (matter) , physics , chemistry , telecommunications , channel (broadcasting) , quantum mechanics , computer science
We present a technique to excite Raman transitions with minimum phase noise. A phase modulator generates the Raman beams and a long calcite crystal rotates the polarization of the sidebands by 90° with respect to the carrier. That polarization converts the destructive interference of the Raman pairs into constructive interference, opening the possibility to drive both co-propagating and counter-propagating transitions at high detuning with the same setup. The technique has low phase noise and a low sensitivity to vibrations or temperature fluctuations. We apply it to drive velocity insensitive Raman transitions. The crystal can be also configured to filter out one of the sidebands.