Patent · US Active

Laser

US8831060B2 · kind B2 · utility

0Cited by

3References

13Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Ulrich Weichmann · Aachen, DE
Matthias Alexander Wilhelm Fechner · Hamburg, DE
Fabian Reichert · Ahrensburg, DE
Herbert Walter Klaus Petermann · Wedel, DE
Gunter Huber · Schrobenhausen, DE

Key dates

Filing date	Jun 10, 2011
Grant date	Sep 9, 2014
Priority date	—
Expiry date	Jun 10, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/32341
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The invention relates to a laser (1) for emitting laser light in the visible spectral range. A rare earth doped anisotropic crystal (2) comprising a 5d-4f transition is arranged within a laser resonator (7, 8), and a pumping light source (3) pumps the crystal (2) for generating laser light in the visible spectral range by using the 5d-4f transition. The 5d-4f transition of the rare earth doped anisotropic crystal comprises an absorption band extending over several nm. Thus, pump light having a wavelength within a relatively broad wavelength range can be used. This reduces the requirements with respect to the wavelength accuracy of the pumping light source and, thus, more pumping light sources of an amount of produced pumping light sources can be used for assembling the laser, thereby reducing the amount of rejects.

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