Tunable Terahertz-Frequency Lasers Based on Semiconductor Nanocrystals

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911NF-04-C-0089
Agency Tracking Number: A045-015-0211
Amount: $100,000.00
Phase: Phase I
Program: STTR
Awards Year: 2004
Solicitation Year: 2004
Solicitation Topic Code: A04-T015
Solicitation Number: N/A
Small Business Information
ALTAIR CENTER, LLC.
1 Chartwell Circle, Shrewsbury, MA, 01545
DUNS: 024491446
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Valery Rupasov
 Principal Scientist
 (508) 845-5349
 altairctr@aol.com
Business Contact
 Sergei Krivoshlykov
Title: President
Phone: (508) 845-5349
Email: altairctr@aol.com
Research Institution
 University of Texas
 Millie Smith
 2601 N. Floyd Rd.
Richardson, TX, 75080
 (972) 883-4316
 Nonprofit college or university
Abstract
ALTAIR Center proposes to develop a new class of tunable terahertz laser sources based on an active laser material fabricated from spherical semiconductor nanocrystals (quantum dots) incorporated into an optical medium transparent in terahertz-frequency range. Due to the strong Stark effect, recently discovered in semiconductor nanocrystals, the transition frequencies can be shifted by an applied low electric voltage that allows developing THz lasers tunable in a wide frequency range. In the proposed implementation, the nanocrystal composites will be incorporated into silicon waveguide structure working as an optical resonator for nanocrystal emitters. That enables on-chip integration of the THz laser sources and terahertz photonics with silicon microelectronics. All key components of the proposed device are either commercially available or routinely fabricated in many laboratories. In Phase I, we will prove feasibility of the proposed concept, evaluate optimum parameters of the required optical elements, and identify cost-effective technology for fabrication of the THz laser. In Phase II, the technology will be completely optimized and applied to fabrication of the prototype THz lasers tunable in a wide range of terahertz frequencies.

* information listed above is at the time of submission.

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