Efficient generation of highly squeezed light and second harmonic wave with periodically poled MgO:LiNbO_3

Abstract

We report on effective generation of continuous-wave squeezed light and second harmonics with a periodically poled MgO:LiNbO${}_3$ (PPMgLN) crystal which enables us to utilize the large nonlinear optical coefficient $d_{33}$. We achieved the squeezing level of $-7.60\pm 0.15$dB at 860 nm by utilizing a subthreshol optical parametric oscillator with a PPMgLN crystal. We also generated 400 mW of second harmonics at 430 nm from 570 mW of fundamental waves with 70% of conversion efficiency by using a PPMgLN crystal inside an external cavity.

4 pages, 3 figures

References in corpus (4)

• Observation of -9 dB quadrature squeezing with improvement of phase stability in homodyne measurement
• Observation of squeezed states with strong photon number oscillations
• 7 dB quadrature squeezing at 860 nm with periodically-poled KTiOPO4
• Generation of continuous-wave broadband Einstein-Podolsky-Rosen beams using periodically-poled lithium niobate waveguides

Cited by in corpus (5)

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• Enhanced multipartite quantum correlations by non-Gaussian operations
• Two schemes for characterization and detection of the squeezed light: Dynamical Casimir effect and nonlinear materials