Patent ID: 6235017
Filing Date: 2001-05-22
Classification: A61C,B23K,H01S

Abstract:
A device for the ablation of material by laser radiation, especially for treating biological substances in stomatologic, endoscopic, dermatologic, rhinoplastic and the like procedures, comprising:a pump laser for generating a radiation-exciting laser radiation;a laser converter for converting the pump laser radiation into a laser radiation that is provided for the treatment having the wavelength range of 3 .mu.m.+-.0.2 .mu.m;said laser converter is accommodated in a treatment head which is spatially separated from the pump laser;a fiber-optic device being provided for transmitting laser radiation from the pump laser to the laser converter using direct absorption transitions; anda metal-holmium-fluoride crystal with an alkaline or alkaline-earth ion as metal ion with partial substitution of the holmium (Ho) ions by praseodymium (Pr) ions, namely one of the following compounds:Me(Ho.sub.1-x Pr.sub.x)F.sub.4, where Me is a metal ion of lithium (Li) or sodium (Na), F is a fluorine ion, and with atomic components of praseodymium of x=0.001 to 0.03, orBa(Ho.sub.1-x Pr.sub.x).sub.2 F.sub.8, where Ba is a barium ion, F is a fluorine ion, and with atomic components of praseodymium of x=0.0005 to 0.015, being provided as laser crystal in the laser converter.