Accession Number : AD0163656

Title :   High-Resolution Optical Upconverter.

Descriptive Note : Patent,

Corporate Author : OFFICE OF THE SECRETARY OF THE ARMY WASHINGTON D C

Personal Author(s) : Firester,Arthur H.

Report Date : 21 DEC 1971

Pagination or Media Count : 4

Abstract : The invention relates to image converters and the like and more particularly to optical upconverters using nonlinear optical materials. In the fields of thermography, night surveillance, night communication, etc., it has been the general practice to employ devices such as image converters for the purpose of converting infrared images into visible images. The optical upconverter shifts the frequency of the object beam into the visible light region, by mixing the object beam and a pump beam in a nonlinear optical material. The invention contemplates a unique arrangement of elements, whereby the angle between the wavevectors of the pump beam and the object beam are minimized.

Descriptors :   (*IMAGE CONVERTERS, *PATENTS), INFRARED IMAGES, INFRARED DETECTORS, LASERS

Subject Categories : Infrared Detection and Detectors
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE