Doppler-Free Laser-Induced Dichroism and Birefringence

2 Doppler-Free Laser-Induced Dichroism and Birefringence 

A slight modification of the experimental arrangement used for polarization spectroscopy allows the simultaneous observation of saturated absorption and dispersion [274]. While in the setup of Fig. 2.22 the probe beam had linear polarization, here a circularly polarized probe and a linearly polarized pump beam are used (Fig. 2.45). The probe beam can be composed of two components with linear polarization parallel and perpendicular to the pump beam polarization. Due to anisotropic saturation 

A slight modification of the experimental arrangement used for polarization spectroscopy allows the simultaneous observation of saturated absorption and dispersion [10.62]. While in the setup of Fig.10.34 the probe beam had linear polarization, here a circularly polarized probe and a linearly polarized pump beam are used (Fig.10.44). The probe beam can be composed of two components with linear polarization parallel and perpendicular to the pump beam polarization. Due to anisotropic saturation by the pump, the absorption coefficients a and and the refractive indices n and n experienced by the probe beam are different for the parallel and the perpendicular polarizations. This causes a change of the probe beam polarization which is monitored behind a linear analyzer rotated through an angle e from the reference direction 7T. Analogous to the derivation in Sect.10.3.2, one can show that the transmitted intensity of a circularly polarized probe wave with incident intensity I is for aL l and An(L/X) l 

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Fig. 2.45 Experimental arrangement for observation of Doppler-free laser-induced dichroism and birefringence [274]...

C. Delsart, J.C. KeUer, Doppler-free laser induced dichroism and birefringence, in Laser Spectroscopy of Atoms and Molecules, ed. by H. Walther. Topics Appl. Phys., vol. 2... 

C. Delsart, J.C. Keller "Doppler-Free Laser Induced Dichroism and Birefringence", in Ref. 1.11, p. 154... 

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