Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Four-Wave Mixing With Matter Waves

Published

Author(s)

Lu Deng, Edward W. Hagley, J Wen, M Trippenbach, Y B. Band, Paul S. Julienne, J E. Simsarian, Kristian Helmerson, S L. Rolston, William D. Phillips

Abstract

The advent of the laser as an intense, coherent light source gave birth to nonlinear optics, which now plays an important role in many areas of science and technology. One of the first applications of nonlinear optics was the production of coherent light of a new frequency by multi-wave mixing of several optical fields in a nonlinear medium, one whose refractive index depends on the intensity of the field. Until the experimental realization of Bose-Einstein Condensation (BEC) there had been no intense coherent source of matter-waves analogous to the optical laser. BEC has already been exploited to produce a matter-wave laser, leading us to the threshold of a new field of physics: nonlinear atom optics. Here we report the first experiment in nonlinear atom optics: the observation of coherent four wave mixing (4WM) in which three sodium matter waves mix to produce a fourth. We show the nonlinear dependence of the generated matter wave on the densities of input wave, a clear signature of a 4WM process.
Citation
Nature
Volume
398
Issue
No. 6724

Keywords

Bose-Einstein Condensate, four-wave mixing, nonlinear atom optics, nonlinear optics
Created March 1, 1999, Updated October 22, 2018