High Resolution Fourier Transform Spectroscopy from 10 to 1000 cm−1

Abstract

A Bomem DA3.002 Fourier transform spectrometer has been modified by replacing the plane moving mirror with a moving roof-top and a stationary retro-reflector. This simple modification results in a maximum optical path difference of about 4.5m and an apparatus function with full width at half maximum of about 0.0014 cm−1. Doppler limited spectra can now be obtained to 600 cm−1 (depending on the species under study) and the maximum resolution has been observed down to 10 cm−1.