About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Conference paper
LASER FREQUENCY DIVISION BY DUAL-FREQUENCY MODULATION.
Abstract
Summary form only given. A sensitive optical interferometric technique, dual-frequency modulation (DFM), for measuring and stabilizing a laser frequency by comparison in a single step to a radio-frequency standard is reported. It is designed to provide a tunable source for high-resolution laser spectroscopy whose absolute frequency is known to tens of kilohertz and is stable to several hundred hertz or less. Preliminary measurements give a resolution of 2 parts in 10** minus 10 . The principle of the technique rests on phase locking the mode spacing of an optical cavity to a radio-frequency standard and simultaneously phase locking a laser to the Nth order of the same cavity.