Abstract

Recently we analyzed an optical-phase feed-forward scheme to produce a tunable squeezed-light beam from the twin beams generated by means of nondegenerate parametric amplification [ Opt. Lett. 16, 755 ( 1991)]. Here we present a wideband model of this scheme. The noise characteristics of the homodyne detector that measures squeezing properties of the phase-controlled output signal beam from the parametric amplifier are analyzed in detail. To minimize the squeezed-noise power at an arbitrarily given sideband frequency, we calculate the optimum phase feed-forward transfer function. This feed-forward transfer function is realizable through the use of a bandpass filter and an electronic amplifier. For certain frequency profiles of the gain and phase of the parametric amplifier, the squeezed-noise power spectral density can be minimized over the entire bandwidth of the electronic detector that is used in homodyne detection.

© 1992 Optical Society of America

Tunable squeezed-light generation from twin beams using an optical-phase feed-forward scheme

Chonghoon Kim and Prem Kumar
Opt. Lett. 16(10) 755-757 (1991)

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