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Trace gas detection with frequency comb Fourier transform spectroscopy

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Abstract

Dual comb Fourier transform spectroscopy with cavity enhancement holds much promise for trace gas sensing. Broadband high resolution spectra of ammonia around 1.0 µm are recorded within 18 µs and a noise equivalent absorption of 1 10−10 cm−1Hz−1/2.

© 2010 Optical Society of America

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