| US 7,483,143 B2 | ||
| Method and apparatus for conducting heterodyne frequency-comb spectroscopy | ||
| Scott T. Sanders, Madison, Wis. (US); and Joachim W. Walewski, Unterhaching (Germany) | ||
| Assigned to Wisconsin Alumni Research Foundation, Madison, Wis. (US) | ||
| Filed on Jun. 06, 2006, as Appl. No. 11/447,631. | ||
| Claims priority of provisional application 60/765963, filed on Feb. 07, 2006. | ||
| Prior Publication US 2007/0182966 A1, Aug. 09, 2007 | ||
| Int. Cl. G01B 9/02 (2006.01) | ||
| U.S. Cl. 356—454 [356/484] | 25 Claims |
| 1. An apparatus for conducting heterodyne frequency-comb spectroscopy on a sample, comprising:
a first frequency-comb generator for generating a first continuous wave laser beam, the first beam defining a spectrum of
light that includes a plurality of optical frequencies spaced by a first frequency;
a second frequency-comb generator for generating a second continuous wave laser beam, the second beam defining a spectrum
of light that includes a plurality of optical frequencies spaced by a second frequency; and
a beam combiner operatively connected to the first and second frequency-comb generators, the beam combiner combining the first
and second beams upstream of the sample and providing the same as a combined beam having a plurality of beat frequencies dependent
upon the optical frequencies of the spectrums of light defined by the first and second beams.
|