High-sensitivity time-resolved intracavity laser Fourier transform spectroscopy with vertical cavity surface emitting multiple quantum well lasers

Abstract

Spectra comprised of hundreds of time-components for absorption path lengths up to 130 km have been recorded around 1050 nm by combining two recent techniques, intracavity laser spectroscopy with vertical external cavity surface emitting multiple-quantum-well lasers and time-resolved Fourier transform spectroscopy. A sensitivity of 1 10^{-10} cm^{-1}.Hz^{-1/2} is achieved, for simultaneously acquired 10^4 spectral elements, three orders of magnitude better than the sensitivity obtained in previous similar experiments. Specific advantages of the method, especially for frequency and intensity metrology of weak absorption transitions, are discussed.

Cited by in corpus (3)

• N_2O weak lines observed between 3900 and 4050 cm^-1 from long path absorption spectra
• Acetylene weak bands at 2.5 $\mu$m from intracavity Cr2+:ZnSe laser absorption observed with time-resolved Fourier transform spectroscopy
• Continuous-wave 1.55 $\mu$m diode-pumped surface emitting semiconductor laser for broadband multiplex spectroscopy