| 摘要 |
A laser apparatus for selectively supplying a plurality of laser beams of 30 nm or more in wavelength difference to a measuring apparatus includes optical fibers through which the laser beams pass, and a switching and coupling means connected to the optical fibers for selecting at least one laser beam from a plurality of laser beams. A laser-applied apparatus includes this laser apparatus, and a fluorescent microscope, a DNA sequencer, or an examination apparatus selected from a DNA chip examination apparatus, protein examination apparatus and a DNA probe array examination apparatus.
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