Optical Parametric Oscillator
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Emaranhamento tripartite no oscilador paramétrico ótico / Tripartite entanglement in the optical parametric oscillator
We present in this work the first experimental verification of entanglement between the, signal, idler and reflected pump beams, generated by an Optical Parametric Oscillator (OPO) above the threshold. Using the criterion of sum of variances, proposed by van Loock and Furusawa, we obtained results that indicate the existence of tripartite entanglement in our
Publicado em: 2009
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2. Excesso de ruído no oscilador paramétrico ótico / Excess noise in optical parametric oscillator
In spite of the fact that the Optical Parametric Oscillator (OPO) is one of the most known experiments related with quantum information research, its experimental results did not have a good agreement with the theory, in the above threshold regime, because of an unexpected excess noise in the phase quadrature on its beams. In this work we sistematicaly prese
Publicado em: 2008
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3. Multicolor Quantum Correlations in the Optical Parametric Oscillator / Correlações quânticas multicolores no oscilador paramétrico ótico
We have investigated the collective quantum properties of the three bright light beams produced by an optical parametric oscillator (OPO) operating above threshold, named pump, signal, and idler. We have analyzed experimentally their intensity and phase quantum fluctuations, and how they are correlated. For the first time, we have observed the existence of p
Publicado em: 2008
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4. Study of entanglement in the non-degenerate optical parametric oscillator above-threshold / "Estudo de emaranhamento no oscilador paramétrico ótico não-degenerado acima do limiar"
A compressão nas flutuações da diferença de intensidades dos feixes sinal e complementar gerados por um OPO acima do limiar foi medida já há algum tempo e constituiu um dos principais interesses nestes sistemas. Emaranhamento entre esses feixes, entretanto, ainda não foi experimentalmente demonstrado em circunstâncias normais de operação acima do l
Publicado em: 2004
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5. Compressão de ruido quantico e efeitos transversos em osciladores parametricos oticos
We present in this work the project and construction of an Optical Parametric Oscillator ( OPO ) , showing the quantum behavior in the intensity correlation of signal and idler beams, generated from a 532 nm pump. We have also studied, in a second set-up, the quantum noise compression in the pump beam reflected from an OPO cavity, obtaining 38% of noise redu
Publicado em: 2002
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6. Classical and quantum properties of optical parametric oscillators
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
Brazilian Journal of Physics. Publicado em: 2001-12
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7. Photoacoustic technique to measure beam profile of pulsed laser systems
The beam profiles of pulsed lasers are currently measured using either complementary metal oxide semiconductor (CMOS) or charge coupled device (CCD) cameras. Despite providing high-resolution beam profiles, these devices cannot work with high power lasers. If additional optical attenuators are used, beam distortions may occur. In this paper we demonstrate a
American Institute of Physics.