Optics: measuring and testing – For light transmission or absorption – Of fluent material
Reexamination Certificate
2007-10-02
2007-10-02
Rosenberger, Richard A. (Department: 2877)
Optics: measuring and testing
For light transmission or absorption
Of fluent material
C250S343000
Reexamination Certificate
active
11252128
ABSTRACT:
An apparatus and method for controlling a light source used in Cavity Ring-Down Spectroscopy. The apparatus comprises a controller that generates a control signal to activate and deactivate the light source based on a comparison of an energy signal from a resonant cavity and a threshold. The light source is activated for a time period based on the stabilization time of the light source and the time necessary to provide sufficient energy to the resonant cavity. Thereafter the controller deactivates the light source for a predetermined time period by interrupting its current source so that the light energy in the cavity rings down and so that the presence of analyte can be measured. The light energy from the light source is directly coupled to the resonant cavity from the light source.
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Augustine Robert
Krusen Calvin R.
Wang Chuji
Yan Wen-Bin
RatnerPrestia
Rosenberger Richard A.
Tiger Optics, LLC
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