STTR Phase I: Fabrication of Blue/UV Lasers and Laser Systems

Award Information
Agency: National Science Foundation
Branch: N/A
Contract: 0539033
Agency Tracking Number: 0539033
Amount: $100,000.00
Phase: Phase I
Program: STTR
Awards Year: 2006
Solicitation Year: 2005
Solicitation Topic Code: EL
Solicitation Number: NSF 05-557
Small Business Information
710 Asp Avenue, Suite 500, Norman, OK, 73069
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Chad Roller
 (405) 307-8803
Business Contact
 G. Carl Gibson
Phone: (405) 307-8807
Research Institution
 Univ. of OK
 Mark B Yeary
 Univ. of OK
Norman, OK, 73019
 (405) 325-8131
 Nonprofit college or university
This Small Business Technology Transfer (STTR) Phase I research project proposes to develop new methods for blue/UV laser fabrication. These new devices will have the competitive advantages of higher emission intensities, higher reliability, and ability to extend emission into the deep UV spectral range. Fabricated devices will consist of cleaved AlGaN epitaxial layer structures on the tips of copper bars. Such semiconductor material packaging will significantly improve heat dissipation from large band gap AlGaN semiconductor active region materials. Enhanced active region heat dissipation will allow operation with much higher injection currents and correspondingly higher light output. Research will focus on adapting a metallization, bonding, and cleaving technique originally developed at the University of Oklahoma for mid-IR laser fabrication using IVVI semiconductor epitaxial layer materials. The project will also focus on developing a low cost electronics system capable of measuring short fluorescence lifetimes. Work on the electronics portion of this project will be devoted to the design of a small circuit board populated with a low cost digital signal processor and related components. Firmware will also be written to perform a coherent under-sampling measurement algorithm that will enable accurate measurement of photodetector decay transients of 1 nanosecond or less. Advances in fabricating improved blue/UV light emitters and low cost electronics for fast photodetector signal measurements will enable development of improved chemical and biological (CB) sensors. An important outcome will be compact and low power consumption deep UV light sources; devices that will enhance the capabilities of CB sensors based on fluorescence and Raman scattering detection principles. A handheld CB sensor for distinguishing between a harmless inorganic material and a potentially harmful pathogenic biological material is just one example of a product that can be developed as a result of this project. In addition, improved blue and UV emitters can also be used for optical data storage and solid state lighting.

* information listed above is at the time of submission.

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