Two-photon absorption properties of (N-carbazolyl)-stilbenes

Jonathan Segal; Zvi Kotler; M. Sigalov; Amos Ben-Asuly; Vladimir Khodorkovsky

doi:10.1117/12.368269

11 October 1999 Two-photon absorption properties of (N-carbazolyl)-stilbenes

Jonathan Segal, Zvi Kotler, M. Sigalov, Amos Ben-Asuly, Vladimir Khodorkovsky

Proceedings Volume 3796, Organic Nonlinear Optical Materials; (1999) https://doi.org/10.1117/12.368269
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

We have studied the two-photon absorption (TPA) and fluorescence properties of a series of phenylpolyenes with N-carbazolyl as donor end-groups in symmetric positions. The symmetric substitution of carbazole end-groups enhances the photostability of the molecules and maintains high TP coefficients. High fluorescence quantum efficiencies have been measured. The results suggest that TP chromophores with carbazole donors are promising materials for applications in two-photon imagin and sensitization. The study covers a broad excitation spectrum from 580nm to 820nm using a picosecond optical parametric source. We take advantage of the correlation between idler and signal waves emerging from the parametric generator and calibrate our results against Rhodamine B for which reliable data is available in the long wave range.

Citation Download Citation

Jonathan Segal, Zvi Kotler, M. Sigalov, Amos Ben-Asuly, and Vladimir Khodorkovsky "Two-photon absorption properties of (N-carbazolyl)-stilbenes", Proc. SPIE 3796, Organic Nonlinear Optical Materials, (11 October 1999); https://doi.org/10.1117/12.368269

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