A Fluorimeter on the Basis of a Femtosecond Cr+4: Forsterite Laser |
| |
| Authors: | Yu. A. Shandarov I. V. Kryukov D. A. Ivanov A. A. Ivanov N. Kh. Petrov M. V. Alfimov |
| |
| Affiliation: | 1.Center of Photochemistry, Crystallography and Photonics Federal Research Center,Russian Academy of Sciences,Moscow,Russia;2.Moscow Institute of Physics and Technology,Dolgoprudnyi, Moscow oblast,Russia |
| |
| Abstract: | An apparatus for measuring luminescence lifetimes using the femtosecond up-conversion method is presented. A laser system based on a chromium–forsterite crystal with a lasing wavelength of 1250 nm is used to generate ultrashort pulses. Luminescence is excited in a sample by optical harmonics that are generated in nonlinear optical crystals. The width of the instrument function of the system is 200 fs. Methods for optimizing the signal-to-noise ratio in measurements are discussed. The results of measurements of the fluorescence- decay dynamics and the anisotropy of aqueous solutions of an inclusion complex of the 4-DASPI styrene dye in cucurbit[6]uril on short (5 ps) and long (500 ps) time scales are presented. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
