Nonintrusive Optical Thermometers for Real-Time Control of Fabrication Processes

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$599,813.00
Award Year:
2007
Program:
SBIR
Phase:
Phase II
Contract:
NNC07CA33C
Agency Tracking Number:
054116
Solicitation Year:
2005
Solicitation Topic Code:
S4.04
Solicitation Number:
n/a
Small Business Information
Los Gatos Research
67 East Evelyn Avenue, Suite 3, Mountain View, CA, 94041-1529
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
928805761
Principal Investigator:
Douglas Baer
Principal Investigator
(650) 965-7772
d.baer@lgrinc.com
Business Contact:
Anthony O'Keefe
President
(650) 965-7772
a.okeefe@lgrinc.com
Research Institution:
n/a
Abstract
In the proposed SBIR Phase I program LGR will develop and deploy a novel instrument ("Optical Thermometer") that provides real-time, in situ, non-contact 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 0.01 degrees C in a measurement time of less than 0.01 seconds. The precision may be improved with increasing measurement time, if desired. The "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 mid-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 interwafer and batch-to-batch variations through closed-loop process control.

* information listed above is at the time of submission.

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