Gas refractive index measurements using dynamic phase-shift keyed gratings
نویسندگان
چکیده
We present a new technique for measuring refractive index changes using the technique of phase-shift keying of holographic gratings. Based on this technique, we have realized an holographic interferometer to gauge refractive index variations in gases. We present experimental data for standard atmosphere under laboratory conditions and theoretical calculations for the measured transfer function of phase-shifted Bragg gratings.
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