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.