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- Title
A Fluorimeter on the Basis of a Femtosecond Cr<sup>+4</sup>: Forsterite Laser.
- Authors
Shandarov, Yu. A.; Kryukov, I. V.; Ivanov, D. A.; Ivanov, A. A.; Petrov, N. Kh.; Alfimov, M. V.
- 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.
- Subjects
LUMINESCENCE measurement; FLUORIMETER; FEMTOSECOND pulse measurement; FEMTOSECOND lasers; NONLINEAR optical materials crystallography; PHOTON upconversion; SIGNAL-to-noise ratio
- Publication
Instruments & Experimental Techniques, 2018, Vol 61, Issue 4, p556
- ISSN
0020-4412
- Publication type
Article
- DOI
10.1134/S0020441218040103