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Optical External and Intrinsic Fiber Cooler for GaN Microwave Amplifier

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-10-M-0299
Agency Tracking Number: N10A-017-0534
Amount: $69,982.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: N10A-T017
Solicitation Number: 2010.A
Solicitation Year: 2010
Award Year: 2010
Award Start Date (Proposal Award Date): 2010-06-28
Award End Date (Contract End Date): 2011-04-30
Small Business Information
900 Middlesex Turnpike Building #5
Billerica, MA 01821
United States
DUNS: 055023654
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Gary Betts
 Principal Investigator
 (760) 839-8211
Business Contact
 Catherine Hinkley
Title: Contract Manager
Phone: (978) 670-4990
Research Institution
 John Hopkins University
 Cheryl-Lee Howard
W400 Wyman Park Center 3400 N. Charles Street
Baltimore, MD 21218
United States

 (410) 516-8668
 Nonprofit College or University

In this STTR program, Photonic Systems Inc. and Prof. Jacob Khurgin at Johns Hopkins University propose novel optical external and internal fiber cooling approaches to efficiently cool the high power GaN microwave amplifier. The external cooler is a single end, square-shape, Yb:ZLAN fiber with high reflection (HR) coated surface which can attach to the amplifier surface and create a cold spot at the vicinity of the drain area where the amplifier hot spot is located. The internal Raman cooling approach, consisting of a photonic crystal resonant structure and pump-collect fiber pair, suppresses the hot optical phonon directly by using Raman scattering in GaN with resonance enhanced anti-Stokes and mitigated Stokes processes.

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

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