NARROWBAND OPTICAL FILTER FOR LASER RADAR APPLICATIONS

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$68,754.00
Award Year:
1994
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
25658
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Aurora Associates
3350 Scott Boulevard, Bldg., 20, Santa Clara, CA, 95054
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr. I. C. Chang
(408) 748-0867
Business Contact:
() -
Research Institution:
n/a
Abstract
The objective of the proposed program is to develop a widefield narrowband optical filter (WNOF) for use in laser radar receivers. The WNOF provides the necessary discrimination against strong solar bandground that limits the daytime performance of the laser radar system. The proposed approach is based on a new design of field widened birefringent filter. Preliminary analysis shows the following performance goals can met: bandwidth = 0.5A, field of view = +/- 7.5 degrees, optical aperature = 6.5 cm, tranmission = 20 percent, and can be designed to match a selected laser wavelength anywhere in the green wavelength region (510 - 550 nm). A number of critical issues for the proposed approach are identified. These include the need of fine tuning for compensating thermal effect and fabrication errors, reduced optical transmission due to fresnel loss, polarizers and additional loss from electro-optic elements. A risk reduction effort is proposed in Phase I that includes these tasks: (a) analyze proposed WNOF design and method of tuning, (b) investigate the issues associated with production of the filters and (c) development of a single stage prototype for demonstration of the tuning of the filter.

* information listed above is at the time of submission.

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