Patent · US Expired

Intracavity frequency-doubled diode-pumped laser

US6711184B1 · kind B1 · utility

2Cited by

9References

18Claims

0Family size

Assignee

JENOPTIK Laser, Optik, Systeme GmbH · DE

Inventors

Guenter Hollemann · Jena, DE
Wolfram Mendler · Schlieben, DE
René Beilschmidt · Jena, DE

Key dates

Filing date	May 18, 2001
Grant date	Mar 23, 2004
Priority date	—
Expiry date	Aug 6, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH01S3/09415
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A diode-pumped laser is disclosed with internal frequency doubling to prevent interfering power fluctuations in the laser radiation generated by the non-linear crystal at the start of the power adjustment in a simple and, therefore, inexpensive construction without power-reducing elements in the cavity or thermal effects having a negative impact on the laser behavior. The laser contains, as laser-active medium, a solid-state laser crystal with a temperature gradient directed substantially parallel to the cavity axis. The conversion of laser radiation of a fundamental laser wavelength into laser radiation of another wavelength is carried out by a non-linear optical crystal with a lower non-linear conversion efficiency than that required for achieving maximum power of the converted laser radiation. The laser can be used particularly for medical purposes, e.g., in the field of ophthalmology for coagulation of the retina as well as in the field of dermatology.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.