Abstract
A new polarization modulation Zeeman method combined with high resolution Fourier transform spectroscopy is described. It selectively detects the paramagnetic species produced in a plasma under a constant magnetic field. The polarizing optics is convenient and easily covers wide spectral ranges. NO absorption and N2O, NO emission spectra are reported. With a magnetic field of the order of 560 G and a 40-cm long discharge tube, the P and R lines of the 1—0 band of NO around 5 μm are observed up to J = 28.5 whereas the much more intense N2O lines are not detected. Unexplained line shapes of the first Q2 lines of NO are reported. A comparison with a recent frequency modulation Zeeman method coupled with high resolution Fourier transform spectroscopy is given.
© 1989 Optical Society of America
Full Article | PDF ArticleMore Like This
Nathalie Picqué and Guy Guelachvili
Appl. Opt. 38(7) 1224-1230 (1999)
G. Guelachvili
J. Opt. Soc. Am. B 3(12) 1718-1721 (1986)
John Howard
Appl. Opt. 41(1) 197-208 (2002)