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.
References in periodicals archive ?
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.