Patent · US Active

Laser system

US8687667B2 · kind B2 · utility

0Cited by

32References

20Claims

0Family size

Assignee

Universitaet Stuttgart Institut fuer Strahlwerkzeuge · DE

Inventors

Marwan Abdou Ahmen · Stuttgart, DE
Andreas Voss · Essen, DE

Key dates

Filing date	Sep 21, 2012
Grant date	Apr 1, 2014
Priority date	—
Expiry date	Sep 21, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/4087
WIPO fieldOptics
WIPO sectorInstruments

Abstract

To improve a laser system comprising at least one externally stabilizable semiconductor laser, from the laser active zone of which a laser radiation field can be coupled out, and a feedback element, disposed externally in the laser radiation field, which couples out, from the laser radiation field, a feedback radiation field having a defined wavelength and bandwidth, and couples back same into the active laser zone for determining the wavelength and bandwidth of the laser radiation field, in such a way that the wavelength stabilization may be achieved more cost-effectively, it is proposed that the feedback element is a resonant waveguide grating which reflects back a portion of the laser radiation field lying within an angular acceptance range.

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