Accession Number : ADD009363

Title :   Laser Power Meter.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Eitel,Frederick G

Report Date : 05 Apr 1982

Pagination or Media Count : 24

Abstract : A laser power meter is disclosed which includes a housing, an optical window in the housing through which the laser radiation is transmitted, and an optic in the housing in the path of the laser radiation. The optic absorbs a portion of the incident laser radiation, the absorbed laser radiation being converted into heat, and reflects a portion of the incident laser radiation. The heat generated at the optic is transferred to a cooling fluid flowing through a flow channel adjacent the optic. The width of the flow channel is defined by the space between the optic and a gap control disk. Apparatus is provided for urging the gap control disk toward the optic in order to maintain the width of the flow channel in the event the width of the flow channel changes as a result of thermal distortions suffered by the optic. (Author)

Descriptors :   *Patent applications, *Optical equipment, *Power meters, *Laser beams, Energy transfer, Heating, Fluid flow, Temperature gradients, Windows, Laser materials, Resolution, Accuracy

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE