Optical Johnson noise thermometry

Patent · 31 December 1991

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
• 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

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measure
method
noise
non-contact
non-contact temperature
optical
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planck
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