Modulation of the 3.39-μ Ne Line by Electro-Optic Gases

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Abstract
The Stark effect in several vibrational‐rotational transitions in various gases which have the first vibrational excitation (the C–H stretching vibration) close to the 3.39‐μ transition in neon have been studied in detail. Tuning of the source line from a He–Ne laser over a range of about 0.1 cm−1 was obtained by use of a solenoid. Observations were made of absolute and percentage modulation at various pressures of the gases and included the use of a buffer gas. Maximum modulation of 15% has been achieved. The possibilities for increasing this value and for attaining induced birefringence are also discussed.

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