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 χ(2) (second-order) nonlinear waveguides. We recently obtained 28% squeezing in quasi-phase-matched LiTaO3 waveguides, using picosecond pulses. The amount of squeezing appears to be limited primarily by blue-light-induced red absorption.
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Anderson et al. (1997) studied this question.
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