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optical harmonic

optical harmonic

[′äp·tə·kəl här′män·ik]
(solid-state physics)
Light, generated by passing a laser beam with a power density on the order of 1010 watts per square centimeter or more through certain transparent materials, which has a frequency which is an integral multiple of that of the incident laser light.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive
The power penalty is resulting essentially from the walk-off time, due to fiber chromatic dispersion, between the two optical harmonics [30].
A cost-effective method for high-quality 60 GHz optical millimeter wave signal generation based on frequency quadrupling
Two optical sidebands of second-order optical harmonics related to the optical carrier are generated and maximized at the output of the modulator, and the two sidebands have a frequency spacing of four times of the driving RF to the MZMs.
Therefore, the mm-wave at 60 GHz is mainly due to the beating of optical harmonics at [+ or -] 2 [w.sub.RF] so that constructive and destructive interaction hardly occurs so the RFSSR values are not influenced.
Therefore, the mm-wave at 60 GHz is due to the beating of optical harmonics at [+ or -] 2[w.sub.RF] and beating of sixth-order optical harmonics with the optical carrier so that constructive and destructive interaction will occurs, and the desired mm-wave will suffer from the power fading induced by fiber dispersion.
Development of a new approach for high-quality quadrupling frequency optical millimeter-wave signal generation without optical filter
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