| abstract |
(57) Abstract: Various treatments can be performed by irradiating a target tissue with laser light of a plurality of wavelengths using a single laser device. A pulse laser beam output from a pulse laser beam output device is received, a pulse laser beam is emitted from a tip of the optical fiber from a tip thereof, and a pulsed laser beam is emitted from a tip of the optical fiber to a tip of the optical fiber. A light-emitting zone Z1 containing an absorbing material that absorbs the pulsed laser light L by receiving and decomposing the pulsed laser light L; Is provided. The light emitting zone Z1 is for generating a secondary plasma light L2 different from the wavelength of the laser light with the photolysis, and the generated secondary plasma light L2 Is directed to the living tissue M. |