Two-photon absorption and stimulated emission spectroscopy of squaraine derivative

IF 3.3 3区物理与天体物理 Q2 OPTICS Journal of Luminescence Pub Date : 2025-02-04 DOI:10.1016/j.jlumin.2025.121119

George V. Klishevіch , Volodymyr O. Hryn , Anton O. Kostetskyi , Iaroslav B. Kuziv , Yuri P. Piryatinski , Nataliia V. Bashmakova , Andriy M. Dmytruk , Viktor M. Kadan , Ivan V. Blonskyi , Mykhailo V. Bondar

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Abstract

The nature of spontaneous and stimulated optical transitions of 2,4-Bis[4-(N,N-diphenylamino)-2,6-dihydroxyphenyl]squaraine (1) was analyzed based on comprehensive linear photophysical and nonlinear optical investigations in liquid solutions at room temperature, including excitation anisotropy, two-photon absorption (2 PA) spectra, and fast vibronic relaxation processes. The values of corresponding transition cross-sections of 1 were measured using a single-beam low-frequency loss modulation technique and fluorescence quenching method. Substantial differences between the absorption cross-sections maxima and corresponding stimulated emission ones were observed for 1 up to 7 times for one-photon optical transitions. 2 PA spectrum of 1 was obtained in a broad spectral range and maximum value of cross-section ∼3000 GM was shown. The relatively large 2 PA cross-sections and high efficiency of other stimulated optical transitions revealed high potential of 1 for a variety of nonlinear optical applications, including stimulated emission depletion (STED) microscopy.

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.