Thennallens spectrum of organic dyes using optical parametric oscillator
نویسندگان
چکیده
The wavelength dependence of thermal lens signal from organic dyes are studied using dual beam thermal bI technique. It is found that the profile of thermal lens spectrum widely differ from the conventional absorption spectrua in the case of rhodamine B unlike in the case of crystal violet. This is explained on the basis of varying contributi<mll' nonradiative relaxations from the excited vibronic levels. ~) 2002 Elsevier Science B.V. All rights reserved.
منابع مشابه
Thermal lens spectrum of organic dyes using optical parametric oscillator.
The wavelength dependence of thermal lens signal from organic dyes are studied using dual beam thermal lens technique. It is found that the profile of thermal lens spectrum widely differ from the conventional absorption spectrum in the case of rhodamine B unlike in the case of crystal violet. This is explained on the basis of varying contribution of nonradiative relaxations from the excited vib...
متن کاملPhotophysical Responses of Benzimidazolic and Benzoxazolic HydroxyCoumarin Dyes
We synthesized four novel benzoxazolic and benzimidazolic derivatives of 6-hydroxycoumarin and their photophysical properties were studied. The products with brilliant yellow color shades declared green fluorescence. The emission peaks of the products appeared 456–474 nm. The important characteristic for fluorescent compounds, the Stokes shift νA-νF, oscillator strength f, and fluorescence quan...
متن کاملMid-infrared continuous wave cavity ring down spectroscopy of molecular ions using an optical parametric oscillator
A sensitive infrared detection scheme is presented in which continuous wave cavity ring down spectroscopy is used to record rovibrational spectra of molecular ions in direct absorption through supersonically expanding planar plasma. A cw optical parametric oscillator is used as a light source and combines a broad spectral coverage (2100–3600 cm ) and narrow bandwidth (7 kHz) with a high output ...
متن کاملImpact of Fourth-Order Dispersion Coefficient on the Gain Spectrum and the Saturation Behavior of One-Pump Fiber Optical Parametric Amplifiers
In this paper, the gain spectrum and the saturation behavior of one-pump fiber optical parametric amplifiers (1-P FOPAs) are investigated by taking into account the fourth-order dispersion coefficient b4 in the analysis. The results show that it is necessary to consider b4 in the analysis when the wavelength difference between the signal and pump waves is large enough and/or whenever the pump w...
متن کاملImpact of Input Pump Profile on the Gain Spectrum and the Saturation Behavior of One-Pump Fiber Optical Parametric Amplifiers
In this article, the impact of input pump profile on the gain spectrum as well as the saturation behavior of one-pump fiber optical parametric amplifiers (FOPAs) is investigated. Since in practical circumstances, pump sources used for FOPAs have Lorentz-Gaussian profile instead of Gaussian, a more realistic case is considered for simulating FOPAs in this article. The results of simulations for ...
متن کامل