THE DESIGN, MANUFACTURE AND PACKAGING OF AN ANAMORPHIC BEAM-EXPANDER TO ILLUMINATE BRAGG CELLS IN A TIME-INTEGRATING CORRELATOR

PDF

Authors
Corporate Authors
LASIRIS Inc, St-Laurent QUE (CAN);Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
As was described in our proposal for contract #W7714-2-9654/01-ST, the purpose of this project is to design and produce an anamorphic beam-expander to illuminate Bragg cells in a time-integrating correlator. The basic element of the beam-expander is a "Power lens" (designed in 1987 by Ian Powell from the National Council of Research of Canada) which is an aspherical element capable of producing a beam with a uniform intensity diverging in one dimension on the X axis. On the other axis, Y. the size of the beam is determined only by the divergence of the laser beam. Unfortunately, the wavefront is not flat because of the presence of aberrations introduced by the lens itself. Our goal is to design and manufacture and element which would collimate the diverging beam exiting from a Powell lens, and correct the wavefront in order to obtain the best flatness possible, while still retaining the uniform intensity, on the X axis, of the beam. The project is separated in two phases: Phase 1 where the design and calculation of an anamorphic beam-expander based on three different elements are performed, and Phase 2 where the prototype beam-expander is manufactured and packaged according to the selected design. TRUNCATED
Keywords
Anamorphic beam expanders;Powell lenses;Holographic optical elements;Line illumination
Report Number
DREO-CR-93-609 — Contractor Report
Date of publication
31 Jan 1993
Number of Pages
33
DSTKIM No
95-02736
CANDIS No
148560
Format(s):
Document Image stored on Optical Disk;Hardcopy

Permanent link

Document 1 of 1

Date modified: