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Conferences > ISA > 2014 > JTu4A > JTu4A.36

RAM-free Wavelength Modulated Off-Axis Integrated Cavity Output Spectroscopy to OH Radical Monitoring

C. Lengignon, X. Cui, W. Zhao, T. Wu, E. Fertein, C. Coeur, and Weidong Chen

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Abstract

Elimination of residual amplitude modulation in wavelength modulated off-axis integrated cavity output spectroscopy allows achieving a noise equivalent absorption sensitivity of 4.5×10−12 cm−1/Hz1/2, yielding a 1σ detection limit of 5.7×109 OH radicals/cm3 at ~1435 nm.

© 2014 Optical Society of America

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