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Proceedings Paper

Determination of fs-vibrational relaxation times of dyes by broadband ns-CARS
Author(s): Andreas Kummrow; A. Lau; H. G. Ludewig; S. Woggon
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Paper Abstract

Interferometric coherent anti-Stokes Raman scattering (ICARS) using non-transform-limited broadband ns-dye lasers is used for time-resolved measurements of vibrational frequency and dephasing time of solutions of bis-(dimethylamino)heptamethinium iodide and all-trans- (beta) -carotene. The results are compared with those obtainable from conventional narrowband scanning CARS. The intensity of the strongest Raman lines of all-trans-(beta) - carotene (1523 cm-1 and 1153 cm-1) decrease for a Stokes laser power density exceeding 1 GW/cm2 ((lambda) approximately equals 550 nm). ICARS reveals a simultaneous broadening of the 1523 cm-1 line from 11 cm-1 to 25 cm-1.

Paper Details

Date Published: 2 January 1995
PDF: 12 pages
Proc. SPIE 2370, 5th International Conference on Laser Applications in Life Sciences, (2 January 1995); doi: 10.1117/12.197444
Show Author Affiliations
Andreas Kummrow, Max-Born-Institut (Germany)
A. Lau, Max-Born-Institut (Germany)
H. G. Ludewig, Max-Born-Institut (Germany)
S. Woggon, Max-Born-Institut (Germany)


Published in SPIE Proceedings Vol. 2370:
5th International Conference on Laser Applications in Life Sciences
Pavel A. Apanasevich; Nikolai I. Koroteev; Sergei G. Kruglik; Victor N. Zadkov, Editor(s)

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