Nonintrusive Optical Thermometers for Real-Time Control of Fabrication Processes

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNC06CB19C
Agency Tracking Number: 054116
Amount: $69,996.00
Phase: Phase I
Program: SBIR
Awards Year: 2006
Solitcitation Year: 2005
Solitcitation Topic Code: S4.04
Solitcitation Number: N/A
Small Business Information
Los Gatos Research
67 East Evelyn Avenue, Suite 3, Mountain View, CA, 94041-1518
Duns: 928805761
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Douglas Baer
 Principal Investigator
 (650) 965-7772
 d.baer@lgrinc.com
Business Contact
 Anthony O'Keefe
Title: President
Phone: (650) 965-7772
Email: a.okeefe@lgrinc.com
Research Institution
N/A
Abstract
The objective of the proposed SBIR Phase I program is to develop an instrument that provides real-time, in situ measurements of substrate temperature in optical coating reactors. The instrument will employ an inexpensive diode laser, fiber optic components, and established laser interferometry methods to determine substrate temperature at multiple locations with a replicate precision of better than 0.1 degrees C in a measurement time of less than 0.2 seconds. The precision may be improved with increasing measurement time, if desired. The instrument (an "optical thermometer") will be demonstrated on optical substrates made of a variety of materials in state-of-the-art industrial reactors specializing in UV, visible, near-IR and IR optical coatings. The fast response of the sensor will enable coaters to use, for the first time, precise measurements of bulk substrate temperature to identify temperature nonuniformities during the coating process, refine and improve coating processes in real time, and minimize batch-to-batch variations through closed-loop process control.

* information listed above is at the time of submission.

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