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Patent Searching and Data


Title:
SPATIAL INFORMATION DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2006/104237
Kind Code:
A1
Abstract:
There is provided a spatial information detection device capable of simultaneously detecting a plenty of in-sample substances by detecting induction parametric light emitted from the sample by four-wave mixing without performing fluorescent coloring. The irradiation light from the laser is divided into two optical paths. On one of the optical paths, pump light is generated. On the other optical path, a preset probe light is generated. Moreover, these two optical paths are joined so that the pump light and the probe light are superimposed spatially and temporally. After this, the superimposed pump light and the probe light are converged to irradiate the sample. An emission light of the preset wavelength is extracted from the light emitted from the sample and is simultaneously detected by the detector. The pump light is set with such frequency &ohgr 1, &ohgr 2, ... &ohgr n that the electron resonance is caused by the multiphoton in-sample substance. A wavelength emission light extracted from the sample emission light is preset so as to approach the difference frequency &ohgr n + 2 = (&ohgr 1 + &ohgr 2 + ... &ohgr n) -&ohgr n + 1 between the sum of the pump light frequencies &ohgr 1, &ohgr 2, ... &ohgr n and the probe light frequency &ohgr n + 1.

Inventors:
ITOH KAZUYOSHI (JP)
ISOBE KEISUKE (JP)
FUKUI KIICHI (JP)
WATANABE WATARU (JP)
KATAOKA SHOGO (JP)
Application Number:
PCT/JP2006/307004
Publication Date:
October 05, 2006
Filing Date:
March 28, 2006
Export Citation:
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Assignee:
UNIV OSAKA (JP)
ITOH KAZUYOSHI (JP)
ISOBE KEISUKE (JP)
FUKUI KIICHI (JP)
WATANABE WATARU (JP)
KATAOKA SHOGO (JP)
International Classes:
G01N21/64
Foreign References:
JP2002520612A2002-07-09
US4405237A1983-09-20
JP2004061411A2004-02-26
JP2003279412A2003-10-02
JPH1048677A1998-02-20
Attorney, Agent or Firm:
Yamaguchi, Nobuyuki (HIGASHI-IKEBUKURO SS BUILDING 1F 3-20-3, Higashi-Ikebukuro, Toshima-k, Tokyo 13, JP)
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