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PHYSICAL SCIENCES INC. STTR Phase I Award, November 2022

A STTR Phase I contract was awarded to Physical Sciences in November, 2022 for $149,994.0 USD from the U.S. Department of Defense and Missile Defense Agency.

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sbir.gov/node/2572349
Is a
SBIR/STTR Awards
SBIR/STTR Awards
1

SBIR/STTR Award attributes

SBIR/STTR Award Recipient
Physical Sciences
Physical Sciences
1
Government Agency
U.S. Department of Defense
U.S. Department of Defense
1
Government Branch
Missile Defense Agency
Missile Defense Agency
1
Award Type
STTR1
Contract Number (US Government)
HQ0860-23-C-75171
Award Phase
Phase I1
Award Amount (USD)
149,9941
Date Awarded
November 30, 2022
1
End Date
May 29, 2023
1
Abstract

Diode-pumped alkali lasers (DPAL) offer the potential for scaling to high output powers required for directed energy weapons systems. As power-scaling studies have progressed, increasing concern has emerged about uncertainty in the roles of higher-lying states and the degree of ionization, and their effects on device performance. Ionization by multi-photon absorption and collisional energy pooling may result in a plasma that reduces optical efficiency, increases gas heating, and diminishes beam quality. To address these concerns, advanced diagnostic concepts are required for measurements of the key plasma parameters, electron density and electron energy distribution function (EEDF), in optically pumped Rb/He mixtures representative of high-power DPAL systems. Physical Sciences Inc. (PSI) and its STTR partner, the Air Force Institute of Technology (AFIT), propose to develop a combination of advanced, high-sensitivity diagnostics for direct measurements of plasma electron density and EEDF. The Phase I effort will conduct experimental measurements using microwave interferometry at PSI and Stark broadening of Rb transitions at AFIT, together with theoretical and model-based analyses of electron number density and EEDF, to create a detailed Phase II plan to determine the plasma properties in a surrogate Rb DPAL system. Approved for Public Release | 22-MDA-11339 (13 Dec 22)

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