Cavity ringdown spectroscopy system and method

Details Cavity ringdown spectroscopy system and method Cavity ringdown spectroscopy system and method

2005-03-08

2005-03-08

Stafira, Michael P. (Department: 2877)

Coherent light generators

Particular beam control device

Optical output stabilization

C372S018000, C372S038010, C372S029011, C372S029016, C372S029020, C356S437000

Reexamination Certificate

active

06865198

ABSTRACT:
One embodiment of the present invention includes an optical cavity, a source to provide light to the optical cavity, a sensor to detect the light and generate a corresponding sensor signal, and a servo device including a feedforward input and a feedback input. Feedback from the sensor signal is provided to the servo device to regulate operation of the source at a frequency selected to generate an optical field resonating in the first mode in the cavity. An input device provides a control signal to a control input of the servo device that selectively alters operation of the light source to corresponding halt resonance in the first mode. An evaluation device is also included to evaluate decay of the optical field after resonance in the first mode is halted.

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