Optical Johnson noise thermometry

Patent · Wed Jan 01 00:00:00 EST 1992

OSTI ID:868200

Shepard, Robert L ^[1]; Blalock, Theron V ^[2]; Roberts, Michael J ^[2]; Maxey, Lonnie C ^[3]

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1. Oak Ridge, TN
2. Knoxville, TN
3. Powell, TN

Method and device for direct, non-contact temperature measure of a body. A laser beam is reflected from the surface of the body and detected along with the Planck radiation. The detected signal is analyzed using signal correlation technique to generate an output signal proportional to the Johnson noise introduced into the reflected laser beam as a direct measure of the absolute temperature of the body.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5098197
• OSTI ID: 868200
• Country of Publication: United States
• Language: English

Related Subjects

optical
johnson
noise
thermometry
method
device
direct
non-contact
temperature
measure
laser
beam
reflected
surface
detected
planck
radiation
signal
analyzed
correlation
technique
generate
output
proportional
introduced
absolute
johnson noise
signal proportional
laser beam
output signal
detected signal
reflected laser
direct measure
non-contact temperature
correlation technique
temperature measure
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