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:
May. 14, 1991
Filed:
Mar. 28, 1990
Applicant:
Inventor:
John D'Arcy, Belmont, CA (US);
Assignee:
Spectra Physics, LPD, Mountain View, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 10 ; 372 25 ; 372 38 ; 372 29 ;
Abstract
An apparatus and a method for precisely controlling long-pulse beam intensity in a laser device having a gain medium and a Q-switch disposed in a resonant cavity, and having a pump for supplying constant pulses of energy to the gain medium. The apparatus provides a Q-switch controller for adjustably controlling a timing window during which the Q-switch is open, to define the amount of pump energy coupled into the long pulses, and consequently the intensity of the beam. The controller has an input device for entering a desired length of the timing window, and a display device for displaying an indication of the length.