Non-degenerate two photon absorption enhancement for laser dyes by precise lock-in detection

Journal Article · Tue Dec 15 00:00:00 EST 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4939568· OSTI ID:22492234

Xue, B. ^[1]; Katan, C. ^[2]; Bjorgaard, J. A. ^[3]

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1. Advanced Ultrafast Laser Research Center and Department of Engineering Science, Faculty of Informatics and Engineering, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585 (Japan)
2. Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université Rennes 1, 35042 Rennes (France)
3. Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, NM (United States)

This study demonstrates a measurement system for a non-degenerate two-photon absorption (NDTPA) spectrum. The NDTPA light sources are a white light super continuum beam (WLSC, 500 ∼ 720 nm) and a fundamental beam (798 nm) from a Ti:Sapphire laser. A reliable broadband NDTPA spectrum is acquired in a single-shot detection procedure using a 128-channel lock-in amplifier. The NDTPA spectra for several common laser dyes are measured. Two photon absorption cross section enhancements are found in the experiment and validated by theoretical calculation for all of the chromophores.

• OSTI ID: 22492234
• Journal Information: AIP Advances, Vol. 5, Issue 12; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
CROSS SECTIONS
DYES
LIGHT SOURCES
LOCK-IN AMPLIFIERS
PHOTONS
SAPPHIRE
VISIBLE RADIATION