grating constant

grating constant

[′grād·iŋ ‚kän·stənt]
(optics)
The distance between consecutive diffraction centers of a ultrasonic wave which is producing a light diffraction spectrum.
(spectroscopy)
The distance between consecutive grooves of a diffraction grating.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive ?
Here [q.sub.t] [equivalent to] 2[k.sub.t] is the magnitude of the grating- vector, with a grating constant [LAMBDA] = 2[pi]/[q.sub.t].
It is imperative to note at this juncture that Equation (19) for the reorientation is derived from an incident laser with a sinusoidal intensity grating profile with a grating constant [LAMBDA].