ABSTRACT
A. M. Bullock, A. N. Dharamsi, W. P. Chu, L. R. Poole;
App. Phys. Letts; 70, 1195,1997
The application of wavelength modulation absorption
spectroscopy in the characterization of lineshape functions of molecular
spectra is discussed theoretically, and experimental results for the weak
spin-forbidden, magnetic dipole-driven transitions of the Oxygen A band are
provided. Factors affecting the
accuracy of the method are discussed, and it is shown that the technique allows
one to accurately probe absorption lineshape functions by using a simple,
cost-effective apparatus. The
advantages of using detection harmonics greater than the commonly used second
are discussed, including an investigation of wing structures of absorption
lines and the measurement of collision cross sections.
Back to Research Related to Wavelength
Modulation Spectroscopy