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Passive Limiter For Optical Sensor Protection

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: N/A
Agency Tracking Number: 28449
Amount: $56,793.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Solicitation Year: N/A
Award Year: 1995
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
3149 S. Chrysler Ave.
Tucson, AZ 85713
United States
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Dr. Philip Lam
 (602) 790-0200
Business Contact
Phone: () -
Research Institution

Passive broadband limiter with high response speed is a promising device used to protect optical sensor against determined attack. Lam Optics, Inc. (LOI) proposes to investigate the development of a novel optical limiter using commercially available materials. The optical limiter operates on the following principles. These are beam self-defocusing and total internal reflection induced by absorption enhanced nonlinearities, and excited-state absorption. The proposed optical limiter offers the possibility of passing low intensity light with low attenuation, but blocking transmission of high intensity laser beam. High response speed in nanoseconds, low clamped output, and high linear transmission can be achieved with this device. During Phase I effort, LOI will prove the feasibility of fabricating such a limiter by using prism arrays filled with nonlinear material. Optimum structure of the limiter and requirements of the nonlinear material and additives will be established. The interested wavelength region of the proposed project is 0.4 to 1.2 micrometer. Applications include protection of optical sensors against high energy laser, when these sensors are used in missile, CCD camera, lidar, range finder, optical power/energy meter, remote sensing system and night vision viewer. It could also be equipped for eye protection in viewing instruments such as telescope of military usage and microscope in laser surgery operations.

* Information listed above is at the time of submission. *

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