Highly Efficient, Compact, Wavelength Converters for Pulsed and CW Laser Sources Used in Lidar-Based Remote Sensing and Ranging Systems

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX07CA64P
Agency Tracking Number: 066187
Amount: $99,971.00
Phase: Phase I
Program: SBIR
Awards Year: 2007
Solicitation Year: 2006
Solicitation Topic Code: S6.02
Solicitation Number: N/A
Small Business Information
2310 University Way, Building #1, Bozeman, MT, 59715-6500
DUNS: 062674630
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Gregg Switzer
 Principal Investigator
 (406) 522-0388
Business Contact
 Betsy Heckel
Title: Business Official
Phone: (406) 522-0388
Email: heckel@advr-inc.com
Research Institution
This Small Business Innovation Research Phase I project will demonstrate the feasibility of fabricating waveguides in stoichiometric lithium tantalite (SLT) for highly efficient, quasi-phase matched (QPM) frequency conversion of continuous wave and high peak-power, quasi-continuous laser sources used in lidar-based remote sensing and ranging applications. The key innovation in this effort is the use of large diameter, optical quality, z-cut SLT, which has only recently become commercially available, as the waveguide substrate material. Relative to the standard congruently grown lithium tantalate wafers, stoichiometric lithium tantalate wafers have significantly higher optical damage thresholds, stronger nonlinear and electro-optic response, an expanded transparency window and significantly reduced poling field. Furthermore, because the stoichiometric materials are not lithium deficient, the fabricated waveguides are expected to be optically stable. During the Phase I effort the feasibility of fabricating waveguides in z-cut SLT wafers using annealed proton exchange will be determined, and the impact that variations in processing conditions have on the optical properties will be measured. In the Phase II effort, the waveguide fabrication and poling technology will be refined and grating structures suitable for specific NASA applications requiring wavelength conversion.

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

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