Third Order Nonlinear Optics
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Estudo de propriedades Ãpticas nÃo-lineares da Ãgua em 1,56μm
Neste trabalho foram estudadas as propriedades Ãpticas nÃo lineares de terceira ordem e propriedades tÃrmicas da Ãgua para excitacÃo de comprimento de onda perto da banda de absorcÃo em 1560 nm. As experiÃncias foram feitas usando um laser com pulsos de fentossegundos, largura temporal de 65 fs e taxa de repeticÃo da ordem de 50MHz. A anÃlise do sin
Publicado em: 2008
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2. CaracterizaÃÃo Ãptica de materiais nanoestruturados por tÃcnicas de geraÃÃo de segundo e terceiro harmÃnico
This work is dedicated to the optical characterization of nanostructured materials that are of interest for non-linear optics, optoelectronics and nanophotonics. The hyper- Rayleigh scattering (HRS) technique and the third harmonic generation (THG) technique were used. The materials investigated were a glass-ceramics containing sodium niobate (NaNbO3) nanocr
Publicado em: 2007
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3. Acoplamento de dois feixes com lasers de femtossegundos em vapor de Rb
Femtosecond lasers operating in the mode-locked regime have a repetition rate determined by the round trip time of the pulse inside the laser cavity (TR = 2L/c). For Ti:sapphire lasers the repetition rate is typically of the order of 100 MHz, with TR 10 ns. Under this condition TR may be smaller then the population relaxation time (T1) and the coher
Publicado em: 2007
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4. Study of nonlinear optics property of amino acid / Estudo de propriedades ópticas não lineares de aminoácidos
In this work we have studied nonlinear optical properties of amino acids using femtosecond laser pulses. The nonlinear index of refraction (nz) of L-alanine, L-proline, L-serine, L-threonine and L-arginine in aqueous solution have been determined. Also, the influence of pH in the magnitude of nz of amino acids in solution has been studied. Besides, we have d
Publicado em: 2003