Accession Number : AD0474912

Title :   COHERENT OPTICAL ARRAY TECHNIQUES.

Descriptive Note : Interim technical rept. no. 1, 3 May-2 Aug 65.

Corporate Author : SPERRY GYROSCOPE CO GREAT NECK N Y ELECTRO-OPTICS GROUP

Report Date : NOV 1965

Pagination or Media Count : 25

Abstract : Studies are being conducted to determine the feasibility of a coherent optical phased array system. A 1.06 Mu cw laser master oscillator and preamplifier driving a pair of final amplifiers is being developed for the investigation. Operation of a cw Nd:CaW04 laser oscillator using external end mirrors was achieved. Amplifier studies continued with measurements of gain and transverse gain dependence of Nd:CaW04 rods. Both closely coupled and elliptical pump chambers were utilized. A dither phase stabilization servo system has been designed for control of a Mach-Zehnder configuration during the interpulse period. High-energy amplifier pump cavities have been constructed for forthcoming tests. (Author)

Descriptors :   (*OPTICAL RADAR, *LASERS), ANTENNA ARRAYS, NEODYMIUM, CALCIUM COMPOUNDS, TUNGSTATES, RODS, SERVOMECHANISMS, OPTICAL SCANNING, DOPING, ELECTROMAGNETIC PUMPS

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE