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Fourier Transform Techniques for Measuring Absorption of Transient Species Inoptical Limiting Materials

Published online by Cambridge University Press:  10 February 2011

Yanong Han ,
Wendi Sonnenberg ,
Kurt W. Short ,
Amy Hyfield  and
Lee H. Spangler
Yanong Han
Affiliation:
The Optical Technology Center (OpTeC) and The Department of Chemistry, Montana State University, Bozeman, MT 59717
Wendi Sonnenberg
Affiliation:
The Optical Technology Center (OpTeC) and The Department of Chemistry, Montana State University, Bozeman, MT 59717
Kurt W. Short
Affiliation:
The Optical Technology Center (OpTeC) and The Department of Chemistry, Montana State University, Bozeman, MT 59717
Amy Hyfield
Affiliation:
The Optical Technology Center (OpTeC) and The Department of Chemistry, Montana State University, Bozeman, MT 59717
Lee H. Spangler
Affiliation:
The Optical Technology Center (OpTeC) and The Department of Chemistry, Montana State University, Bozeman, MT 59717
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Abstract

We have developed methods of measuring absorption of transient species utilizing both rapid scan and stepped-scan Fourier transform interferometery that allows a combination of broad spectral coverage (10,000 – 15,000 cm-1 per spectrum), good spectral resolution, and the ability to cover temporal ranges from minutes to nanoseconds. A wide range of pump sources are used including continuous, modulated, ns pulsed, and ultrafast lasers. The probe is provided by a broadband, incoherent source providing large spectral information in each experiment. This capability enables investigation of phenomena such as excited state absorption, charge transfer, formation of metastable species, and others. Extension of the technique to the ps realm is underway and will be discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 597: Symposium PP – Thin Films for Optical Waveguide Devices & Materials … , 1999 , 345
Copyright
Copyright © Materials Research Society 2000

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