2001•Brazilian Journal of PhysicsOpen access

Classical and quantum properties of optical parametric oscillators

M. Martinelli, Carlos L. Garrido Alzar, P. H. Souto Ribeiro, P. Nussenzveig

Abstract

We present a review of the Optical Parametric Oscillator (OPO), describing its operation and the quantum correlation between the light beams generated by this oscillator. We show the construction of an OPO using a Potassium Titanyl Phosphate crystal (KTP), pumped by a frequency doubled Nd:YAG laser, and discuss the stability of the system and related thermal effects. We have measured the quantum correlation of signal and idler beams in a transient regime, obtaining a noise correlation level 39 % below the shot noise level.

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Key concepts: Potassium titanyl phosphate, Physics, Optical parametric oscillator, Quantum noise, Quantum, Noise (video), Parametric statistics, Laser