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US 5,479,256 AGranted
Transient grating spectroscopy
AssigneesResearch Development Corporation of Japan, Takashi Ito
InventorsNaoto Tamai, Takashi Ito, Tsuyoshi Asahi, Hiroshi Masuhara
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Abstract
To derive spectrum information on chemical intermediates in photochemical reactions during transitional periods, a transient grating spectroscopy uses white light as the probe light in the pico-second region and monochromatic light in the microsecond region. According to the procedure, it is possible to analyze the photochemical reaction of thin films and interface layers as a function of time at a high precision.
Claims6
A transient grating spectroscopy method comprising:
- irradiating a plurality of excitation radiations simultaneously onto a sample to generate resultant interference fringes;
- irradiating a white probe light onto said interference fringes to generate resultant diffracted probe light;
- measuring an intensity of said diffracted probe light;
- and,
- deriving spectrum information of a chemical intermediate of the sample from said intensity of said diffracted probe light.
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Dependencies are inferred from the claim text.