Device for ablation of material by means of laser radiation
US6235017A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1999 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Jan 13, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2303/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device for the ablation of biological substances by laser radiation, especially for stomatologic treatment, comprises a pump laser and a laser converter for converting the pump laser radiation into a laser radiation having the wavelength range of 3 .mu.m.+-.0.2 .mu.m, wherein the laser converter is accommodated in a treatment head which is separated from the pump laser by a fiber-optic device. There is provided in the laser converter a metal-holmium-fluoride crystal with an alkaline or alkaline-earth ion as metal ion with partial substitution of the holmium (Ho) ions, namely one of the following compounds: Me(Ho.sub.1-x Pr.sub.x)F.sub.4 with a metal ion of lithium (Li) or sodium (Na), a fluorine ion, and with components of praseodymium of x=0.001 to 0.03, or Ba(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 components of praseodymium of x=0.0005 to 0.015.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.