Wavelength Stabilized High-Power Diode Lasers for Alkali Atom Pumping

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: HQ0147-11-C-7578
Agency Tracking Number: B103-007-0226
Amount: $99,883.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: MDA10-007
Solicitation Number: 2010.3
Small Business Information
1155 E. Collins Blvd., Suite 200, Richardson, TX, -
DUNS: 159060313
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Preston Young
 Senior Electrical Engineer
 (972) 235-7584
 pyoung@photodigm.com
Business Contact
 Neepa Mehta
Title: Accounting Manager
Phone: (972) 235-7584
Email: nmehta@photodigm.com
Research Institution
 Stub
Abstract
This Phase I SBIR proposal is submitted to address the needs of researchers needing high power narrow spectral linewidth diode laser pump sources for alkali vapor lasers. Diode-pumped alkali vapor lasers (DPALs) can be most efficiently pumped with spectrally-stabilized laser diode arrays (LDAs) with very narrow linewidths (a few GHz.) This allows DPAL operation at lower pressure as well as increased efficiency due to optimized absorption of the pump energy. With an efficient optical pump source, DPALs have the potential for scaling to kilowatt (KW) or megawatt (MW) power levels for industrial and military applications. A main hurdle to achieving these power levels has been the availability of high-power narrow spectral linewidth laser diode pump sources. Photodigm proposes an alternative method for diode laser stabilization based on newly emergent Guided-Mode Resonant Filter (GMRF) mirror technology. These mirrors possess both wavelength and angular selectivity with narrowband spectral linewidths as low as 1 GHz achievable. GMRF mirrors are presented as an enabling technology to realize scalable narrow-linewidth wavelength-stabilized laser diode pump sources for DPAL applications. The availability of these high-power spectroscopic pump sources would also find use in industrial and medical applications such as laser machining and spin-exchange optical pumping (SEOP).

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

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