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Selective reflection from an atomic vapour in double-resonance and level-crossing experiments

1967; IOP Publishing; Volume: 91; Issue: 2 Linguagem: Inglês

10.1088/0370-1328/91/2/322

1747-3810

G W Series,

Advanced Chemical Physics Studies

The intensity of polarized light reflected from an absorbing vapour has been calculated for optical radio-frequency double resonance and level-crossing. The reflection coefficient was obtained from the refractive index of the vapour, using the equations of classical electromagnetism. The result obtained by integration over a range of frequencies corresponding to broad-band illumination shows that all the familiar magnetic resonance effects are to be expected in the reflected light, except that the resonance curves should be Doppler- and pressure-broadened. A study of the zero-field level-crossing curve, as a function of vapour pressure, should enable one to follow the gradual transition from diffuse to coherent scattering, and to test whether the simple theory of selective reflection is adequate.