Patent ID: 7995271

Claim:
A laser microscope comprising: a laser light source that outputs ultrashort pulse laser light; a first optical fiber through which the ultrashort pulse laser light outputted from the laser light source propagates while being positively chirped; a negative dispersion optical system that negatively chirps the laser light that has propagated through the first optical fiber; a second optical fiber through which the laser light that has passed through the negative dispersion optical system propagates while being positively chirped; and a microscope body that further positively chirps the laser light that has propagated through the second optical fiber and that irradiates a specimen with the resultant non-chirped ultrashort pulse laser light, wherein the negative dispersion optical system includes a negative dispersion value adjuster that adjusts an amount of negative dispersion according to a change in wavelength of the ultrashort pulse laser light from the laser light source or a change in an amount of positive dispersion in the microscope body, and wherein a balance between a nonlinear effect in the first optical fiber and a nonlinear effect in the second optical fiber is maintained with respect to the ultrashort pulse laser light.