Optics: measuring and testing – For light transmission or absorption
Reexamination Certificate
2006-06-06
2006-06-06
Lauchman, Layla G. (Department: 2877)
Optics: measuring and testing
For light transmission or absorption
C356S442000
Reexamination Certificate
active
07057729
ABSTRACT:
There is provided that enables high-sensitivity analysis to be carried out, and a photothermal conversion spectroscopic analysis apparatus that is compact in size and is able to implement the photothermal conversion spectroscopic analysis method. Exciting light and detecting light are convergently irradiated onto the sample by a converging lens. The sample is analyzed using a change in intensity of the detecting light due to refraction upon passing through the thermal lens produced through the convergent irradiation of the exciting light. A molar absorption coefficient of the sample at a wavelength of the exciting light is a predetermined number of times greater than a molar absorption coefficient of the sample at a wavelength of the detecting light.
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Rojas et al, Thermal lens spectroscopy using a diode laser and optical fibers, American Institute of Physics, May 1992, pp. 2989-2993.
Hattori Akihiko
Yamaguchi Jun
Lauchman Layla G.
Nippon Sheet Glass Co. Ltd.
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