Optics: measuring and testing – By shade or color – With color determination by light intensity comparison
Patent
1978-06-30
1980-06-17
McGraw, Vincent P.
Optics: measuring and testing
By shade or color
With color determination by light intensity comparison
356325, 356435, G01J 346, G01J 342
Patent
active
042081297
ABSTRACT:
A sensitive laser spectroscopy measurement system having a laser radiation source and a dual beam and detection scheme that allows for the measurement of small intensity differences between a probe beam and a reference beam resulting from the absorption, gain or scattering of the probe beam by a medium placed in its optical path. The system attains measurement sensitivities of less than 10.sup.-4 when the laser radiation source for the probe and reference beams is modulatable. Further included within the system is a prism placed in the optical path of the laser beam before the beam splits into the probe and reference beams and a detector for each beam. The detectors are electrically connected to a sensitivity differential amplifier and an oscilloscope for displaying the intensities of the beams.
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"CL X1 Nozzle F.sub.2 Absorption Experiment" Samso-TR-77-107, 6/15/77; published 7/6/77.
Erlich Jacob N.
McGraw Vincent P.
Rusz Joseph E.
The United States of America as represented by the Secretary of
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