Solid-state radio frequency oscillator for optogalvanic spectroscopy: Detection of nitric oxide using the 2-0 overtone transition

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Abstract
A compact, solid-state radio frequency oscillator of low-power consumption is described which allows quantitative measurement of the optogalvanic effect in low-pressure gas discharges. The oscillator has been used to record a portion of the 2-0 overtone band of nitric oxide at a pressure of ∼1 Torr using a tunable color-center laser operating at 2.65 μm.