You are here

Holographic Beam Shaping for Master Oscillator Power Amplifiers (MOPA)

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: N/A
Agency Tracking Number: 32094
Amount: $749,380.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1998
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
18 Flagg Rd.
Hollis, NH 03049
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Jacques Ludman
 (603) 465-3361
Business Contact
Phone: () -
Research Institution
N/A
Abstract

We propose to design and demonstrate beam cleanup for the Master Oscillator (MO) which will allow the Power Amplifier (PA) to operate efficiently and produce a high energy beam useful as a Directed Energy Weapon (DEW). The method we describe is totally new to the DEW field. Of course for low power lasers, we can focus the beam down and pass the clean part through a pinhole spatial filter. The "noisy" part is absorbed, so only a perfect beam emerges. The problem is that for even a few watts of laser power, metal pinholes melt and diamond pinholes shatter. At MO power levels, the pinhole method is clearly absurd. Our approach, developed with BMDO for visible light lasers up to a few watts, is to use the angular selectivity of a thick hologram to clean up the beam. It works well. Neither focusing nor absorption is required, so extension to MO power levels seems plausible. We will explore two main issues: handling of useable MO power levels and extension to nonvisible wavelengths as required by many (but not all) candidate MOs. The team includes the company which makes the holographic filters, a consultant involved in its invention, and a consultant with decades of HEL experience.

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

US Flag An Official Website of the United States Government