NDLI: Light squeezing in optical parametric amplification beyond the slowly-varying amplitude approximation

Content Provider	Springer Nature Link
Copyright Year	2012
Abstract	Optical parametric amplification (OPA) described usually by the coupled-wave equations with the first-order derivatives of the signal and idler waves, is solved under the slowly-varying amplitude approximation (SVA). In this article, by keeping the second-order derivatives in the coupled-wave equations, we obtained an analytical solution for the output signal and idler waves up to the first order of (κ/k)$^{1}$; the ratio of coupling constant to the wave number. Furthermore, here the signal and the idler waves are distinguished only by their polarizations with the same frequency. Light squeezing is observed in normally ordered variances of the two quadrature operators of the output combined mode when plotted against κL, where κ is the coupling constant and L the interaction length. The variances have different signs for a range of values of κL and their variations are in opposite directions. We also show that this property is strongly dependent on the relative refractive index of the medium (n). It is worth mentioning that the relative index dependency is not an explicit feature in squeezing of OPA under SVA approximation. Furthermore, the squeezing vanishes when n → 1 and κ/k → 0.
Starting Page	595
Ending Page	612
Page Count	18
File Format	PDF
ISSN	03044289
Journal	Pramana
Volume Number	78
Issue Number	4
e-ISSN	09737111
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-03-22
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Quantum nonlinear optics squeezed light optical parametric amplification Physics Astrophysics and Astroparticles Astronomy, Observations and Techniques
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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