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Paper
Improved geometry for polarization-sensitive nonlinear spectroscopy
Abstract
An improved geometry for nonlinear spectroscopy experiments is proposed and demonstrated with the Raman-induced Kerr effect. The new scheme utilizes the nonreciprocal rotation of linearly polarized light in a Faraday rotator to manipulate the pump, probe, and signal beams. Complete collinear overlap of the interacting laser beams is conveniently achieved, with 100% of the nonlinearly generated signal incident on the detector. The sensitivity is consequently maximized.