Patent · US Expired

Aerodynamic window for a gas laser

US5185760A · kind A · utility

2Cited by

3References

9Claims

0Family size

Assignee

Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

Keming Du · Aachen, DE
Joachim Franek · Aachen, DE
Peter Loosen · Stolberg, DE

Key dates

Filing date	Feb 28, 1991
Grant date	Feb 9, 1993
Priority date	—
Expiry date	Feb 28, 2011

Classification

Technology area (CPC H)Electricity
CPC primaryH01S3/0343
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Aerodynamic window for a gas laser, whose active chamber emits a focussed ser beam and is flow connected by means of a beam passage opening with a window chamber connected to a vacuum pump and which has a beam exit opening in an outer area which is preferably under atmospheric pressure. In order to reduce the pumping power necessary for the aerodynamic window and improve the laser beam quality, the window is so constructed that the laser beam emitted by the active chamber has a first focus in the vicinity of the beam passage opening and is deflected onto a focussing mirror arranged in the window chamber and which gives the laser beam leaving the latter a second focus located in the vicinity of the beam exit opening.

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