Cavity-enhanced frequency modulation absorption spectroscopy of the sixth overtone band of nitric oxide

Joakim Bood; Andrew McIlroy; David L. Osborn

doi:10.1117/12.478910

19 June 2003 Cavity-enhanced frequency modulation absorption spectroscopy of the sixth overtone band of nitric oxide

Joakim Bood, Andrew McIlroy, David L. Osborn

Proceedings Volume 4962, Manipulation and Analysis of Biomolecules, Cells, and Tissues; (2003) https://doi.org/10.1117/12.478910
Event: Biomedical Optics, 2003, San Jose, CA, United States

Abstract

We apply cavity-enhanced frequency modulation absorption spectroscopy (also known as NICE-OHMS) to perform highly sensitive high-resolution spectroscopy of the sixth overtone band of NO near 797 nm. Our spectrometer provides a sensitivity corresponding to a minimum detectable absorption coefficient of 2.5×10^-10 cm^-1Hz^-1/2, which is ~80 times worse than the ideal shot-noise limited sensitivity. Line intensities are measured for the R(7.5), R(9.5), and R(10.5) rovibrational lines in the ²Π _1/2- ²Π_1/2 sub-band. From these line intensities we calculate a total vibrational band intensity of 2.2×10^-6 cm^-2atm^-1 (at 296 K) and a vibrational transition dipole moment of 4.1 μDebye. The measured values are estimated to be accurate to within ±25%.

Citation Download Citation

Joakim Bood, Andrew McIlroy, and David L. Osborn "Cavity-enhanced frequency modulation absorption spectroscopy of the sixth overtone band of nitric oxide", Proc. SPIE 4962, Manipulation and Analysis of Biomolecules, Cells, and Tissues, (19 June 2003); https://doi.org/10.1117/12.478910

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