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Quantum Dot Microcavity Terahertz Laser

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911NF-04-C-0066
Agency Tracking Number: A045-015-0169
Amount: $99,599.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: A04-T015
Solicitation Number: N/A
Solicitation Year: 2004
Award Year: 2004
Award Start Date (Proposal Award Date): 2004-07-15
Award End Date (Contract End Date): 2005-01-31
Small Business Information
1095 Eden Bower Lane
Redwood City, CA 94061
United States
DUNS: 942272741
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Glenn Solomon
 (650) 725-6910
Business Contact
 Glenn Solomon
Title: CEO
Phone: (650) 725-6910
Research Institution
 Stanford University
 James S Harris
CISX 328
Stanford, CA 94305
United States

 (650) 723-9775
 Nonprofit College or University

CBL Technologies and Stanford University propose to develop and characterize a unique quantum dot microdisk source for high-power laser operation in the low terahertz frequency regime. The source will be used in military applications such as chemical and biological sensing, imaging and communications, as well as emerging commercial applications in medicine and biology. The source contains two components: a gain component and a cavity component. The gain region is composed of self-assembled InAs quantum dots, where lasing occurs via an intersubband transition. Cavity structures are difficult in the terahertz regime, often either lossy or requiring excessively thick epitaxial layers. Our cavity is a high quality microdisk that can have quality factors in excess of 10000. For terahertz emission, the cavity diameter is large and easily fabricated. Since optical modes are present at the perimeter region of the large disks, a unique regrowth process is employed, selectively positioning quantum dots in the cavity mode region. Cavity and lasing simulations in the far infrared are completed, and Stanford has demonstrated early results. In this Phase 1, we will fabricate microdisk laser structures, characterize them in the near-infrared spectral region and extrapolate our results to the terahertz regime.

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

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