A data-processing technique is proposed for use with conventional frequency-chirped absorption spectroscopy to ensure accurate mapping of spectral features into time-domain signatures with arbitrarily fast readout chirp rates. This technique recovers the spectrum from a signal that is distorted owing to the fast chirp rate and therefore facilitates fast measurement of the spectral features over a broad spectral range with high resolution. Both numerical simulations and experimental results are presented.
© 2005 Optical Society of America
(020.1670) Atomic and molecular physics : Coherent optical effects
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(300.1030) Spectroscopy : Absorption
Tiejun Chang, Mingzhen Tian, R. Krishna Mohan, Christoffer Renner, Kristian D. Merkel, and W. Randall Babbitt, "Recovery of spectral features readout with frequency-chirped laser fields," Opt. Lett. 30, 1129-1131 (2005)