Coherent nonlinear optical spectroscopy using photon-number squeezed light
Daniel C. Kilper, A. C. Schaefer, John Erland, Duncan G. Steel · Physical Review A · 1996
Using coherent nonlinear optical spectroscopy below the band edge of a GaAs/${\mathrm{Al}}_{0.3}$${\mathrm{Ga}}_{1\ensuremath{-}0.3}$As multiple quantum well, photon-number squeezed light generated by a quantum-well laser is used to resolve the exciton resonances and the Urbach tail with detection sensitivity below the semiclassical shot-noise limit. The effect of polarization-dependent noise in the nonclassical probe field is also investigated.