Pulsed squeezed-light generation in χ^(2) nonlinear waveguides

We present a brief history of experimental studies of quadrature squeezing, a tutorial on the physical origin and theory of squeezing, and our experimental study of squeezing by means of ${\chi }^{(2)}$ (second-order) nonlinear waveguides. We recently obtained 28% squeezing in quasi-phase-matched ${\mathrm{LiTaO}}_3$ waveguides, using picosecond pulses. The amount of squeezing appears to be limited primarily by blue-light-induced red absorption.