Maximizing two-photon absorption cross section within few essential state model

被引：1

作者：

Rebane, Aleksander ^{[1
,2
]}

Drobizhev, Mikhail ^{[1
]}

Makarov, Nikolay S. ^{[1
]}

Beuerman, Erich ^{[1
]}

Zhao, Yujie ^{[3
]}

Spangler, Charles W. ^{[3
]}

机构：

[1] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA

[2] NICPB, Tallinn, Estonia

[3] SensoPath Technol Inc, Bozeman, MT 59717 USA

来源：

ORGANIC PHOTONIC MATERIALS AND DEVICES XII | 2010年 / 7599卷

关键词：

Two-photon absorption; dipole moment; few state models; STRONG COOPERATIVE ENHANCEMENT; CONJUGATED PORPHYRIN DIMERS; RESONANCE ENHANCEMENT; SINGLET OXYGEN; ONE-PHOTON; SPECTROSCOPY; EXCITATION; MOLECULES;

D O I：

10.1117/12.842627

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We compare the experimental absolute two-photon absorption (2PA) cross sections and spectra of various organic molecules with those obtained from the few (two or three) essential states model, assuming certain parameter values that are either previously calculated theoretically or measured. We study conditions under which the two- or three-level models are applicable for quantitative description of 2PA, and estimate the corresponding maximum realistic attainable peak 2PA cross sections and spectral widths. Based on our observations we formulate the steps required to increase the intensity and broaden the spectral coverage of instantaneous 2PA by optimizing intrinsic molecular parameters such as transition dipole moments, permanent dipole moments and excited states energies.

引用

页数：12

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