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Journal of the Optical Society of America B

Interference of squeezed light produced by two independent optical parametric oscillators

Junxiang Zhang, Changde Xie, Kunchi Peng

Published Oct 1, 1995• 0 citations
Publisher

Abstract

The interference of the squeezed light produced by two independent, identical optical parametric oscillators below threshold is discussed in the context of semiclassical theory. It is shown that interference exists in the usual sense between the output fields from two optical parametric oscillators with coherent injected signals. The degree of squeezing and the intensity and noise fluctuation of the interference field are calculated in detail.

DOI
10.1364/josab.12.001769

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The interference of the squeezed light produced by two independent, identical optical parametric oscillators below threshold is discussed in the context of semiclassical theory. It is shown that interference exists in the usual sense between the output fields from two optical parametric oscillators with coherent injected signals. The degree of squeezing and the intensity and noise fluctuation of the interference field are calculated in detail.
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We perform a theoretical analysis of steady-state solutions and quantum noise in a below-threshold optical parametric oscillator (OPO) operating as an amplifier with an input seed wave. Both the amplitude-squeezed and phase-squeezed states of the output field are considered. We take into account the intracavity nonlinear losses due to intracavity frequency doubling of the signal wave and the quantum fluctuations of the seed and pump waves. Unlike the preceding theoretical studies of the problem, we show that squeezing in bright beams produced by the OPO depends on their intensity. For the amplitude-squeezed state, squeezing strongly degrades with increasing output intensity. In contrast, one can obtain good squeezing for phase-squeezed beams of high output intensity.