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PUBLICATIONS

PDH-locked, frequency-stabilized cavity ring-down spectrometer

Published

Author(s)

Joseph T. Hodges, A. Cygan, Piotr Maslowski, Katarzyna E. Bielska, S. Wojtewicz, J. Domyslawska, Hisashi Abe, R.S. Trawinski, R. Ciurylo

Abstract

We describe a high sensitivity and high spectral resolution laser absorption spectrometer based upon the frequency-stabilized cavity ring-down spectroscopy (FS-CRDS) technique. We used the Pound-Drever-Hall (PDH) method to lock the probe laser to the high-finesse ring-down cavity in order to optimize the acquisition rate and the signal-to-noise ratio. We show that the concomitant narrowing of the probe laser line width leads to dramatically increased ring-down event acquisition rates (up to 13.5 kHz), improved spectrum signal-to-noise ratios for weak O2 absorption spectra at  =687 nm and substantial increases in spectrum acquisition rates compared to implementations of FS-CRDS that do not incorporate high-bandwidth locking techniques. The minimum detectable absorption coefficient and the noise-equivalent absorption coefficient for the spectrometer are about 2x10-10 cm-1 and 8x10-11 cm-1 Hz-1/2, respectively.
Citation
Review of Scientific Instruments
Pub Type
Journals

Download Paper

https://doi.org/10.1063/1.3595680

Keywords

Oxygen, B-band, Cavity ring-down spectroscopy, Remote Sensing, Cavity stabilization
Wireless (RF), Biomaterials, Building materials, Analytical chemistry, Chemical engineering and processing, Thermochemical properties, Electromagnetics, Magnetoelectronics, Alternative energy, Fuels, Fire, Forensic genetics, Cybersecurity, Manufacturing, Biomanufacturing, Materials, Ceramics, Nanobiotechnology, Nanochemistry, Nanoelectronics, Lithography, Nanomagnetics, Nanomaterials, Nanomechanics, Nanometrology, Nanophotonics, Nanoplasmonics, Neutron research, Performance excellence, Magnetics, Spectroscopy and Reference data

Citation

Hodges, J. , Cygan, A. , Maslowski, P. , Bielska, K. , Wojtewicz, S. , Domyslawska, J. , Abe, H. , Trawinski, R. and Ciurylo, R. (2011), PDH-locked, frequency-stabilized cavity ring-down spectrometer, Review of Scientific Instruments, [online], https://doi.org/10.1063/1.3595680 (Accessed December 22, 2024)

Issues

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Created June 16, 2011, Updated November 10, 2018