The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 27, 1999
Filed:
Jul. 30, 1997
Applicant:
Inventor:
Toshitake Shinji, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 61 ; 372 29 ; 372 37 ;
Abstract
An ion laser apparatus having an electromagnet for converging plasma is disclosed for providing stabilized laser operation for a long time. An electromagnet control circuit provided within a power source is capable of changing either voltage or current of the electromagnet while an ion laser tube is discharged. Due to the change of magnetic field of the electromagnet during discharging of the ion laser tube, the plasma configuration is changed while adding intensity to the convergence of the plasma within the ion laser tube, thus inhibiting a stay of a gas within a fine tube to provide stabilized laser operation.