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Proceedings Paper

Optical frequency comb generation for terahertz difference-frequency measurements
Author(s): L. R. Brothers; Ngai C. Wong
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Paper Abstract

We describe the operation of an optical frequency comb generator and its utility in measuring optical frequency differences in the terahertz range. The comb generator is a high-frequency resonant electro-optic modulator capable of generating hundreds of sidebands with a sideband spacing of 17 GHz and a span of at ;east 3 THz. The span is currently limited by the dispersion of the lithium niobate substrate. By detuning the modulation microwave frequency we have obtained asymmetric frequency spectra which effectively increases the span to 4.6 THz. we will describe three experiments that make use of the optical frequency comb to measure a difference frequency of 1.45 THz, to frequency lock two optical sources at a frequency separation of 1.4 THz, and finally to phase lock an optical parametric oscillator at a frequency difference of 0.665 THz.

Paper Details

Date Published: 26 April 1995
PDF: 8 pages
Proc. SPIE 2378, Laser Frequency Stabilization and Noise Reduction, (26 April 1995); doi: 10.1117/12.208235
Show Author Affiliations
L. R. Brothers, Massachusetts Institute of Technology (United States)
Ngai C. Wong, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 2378:
Laser Frequency Stabilization and Noise Reduction
Yaakov Shevy, Editor(s)

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