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US 5,373,358 AGranted
Excitation wavelength sweeping type raman spectroscopic apparatus
AssigneeFuji Xerox Co., Ltd.
InventorYukio Adachi
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Abstract
An excitation wavelength sweeping type Raman spectroscopic apparatus including a wavelength variable laser source, a laser beam converging unit for irradiating a laser beam from the laser source onto a specimen, a bandpass filter for selecting a beam of a predetermined wavelength out of Raman scattered light beams emitted from the specimen, and a photodetecting unit for detecting the beam selected by the bandpass filter. In the apparatus, a Raman spectrum of the specimen is measured by sweeping the wavelength of the laser beam.
Claims5
An excitation wavelength sweeping type Raman spectroscopic apparatus comprising:
- a wavelength variable laser source;
- a first bandpass filter for removing noise from a laser beam emitted by said laser source, a passing wavelength of said first bandpass filter being variable;
- laser beam converging means for irradiating the laser beam passed by said first bandpass filter onto a specimen;
- a second bandpass filter for selecting a beam of a predetermined wavelength out of Raman scattered light beams emitted from the specimen;
- and
- photodetecting means for detecting the beam selected by said second bandpass filter,
- wherein a Raman spectrum of the specimen is measured by sweeping the wavelength of said laser beam and varying the passing wavelength of said first bandpass filter.
4 more elements
Dependencies are inferred from the claim text.