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:
Nov. 28, 1989
Filed:
Sep. 09, 1988
Pliny S Hawthorn, New Carlisle, OH (US);
Mark D Sobottke, Kettering, OH (US);
Spectra-Physics, Inc., San Jose, CA (US);
Abstract
A compact, laser diode pumped, high efficiency, solid-state laser comprises an output coupler mirror forming a front end of a laser cavity. A back end of the laser cavity is formed by a rear mirror through which emissions from a laser diode pass for pumping a laser chip of stoichiometric lasing material. A frequency doubler chip is positioned immediately adjacent the laser chip to double the frequency of light generated by the laser chip and thereby halve its wavelength. The laser chip is bonded to the frequency doubler chip by coupling material having a refractive index matched to the chips to nearly eliminate reflections at the bonded chip surfaces. Such bonding increases the effective Q of the laser cavity which receives the bonded combination of the laser chip and the doubler chip at a beam waist defined within the laser cavity by means of beam shaping with the laser chip being positioned to receive pumping energy from a laser diode through the rear mirror of the laser cavity. Spiking or peaking of the output laser light is effected by gain switching, phase modulation or by imparting vibratory motion to the bonded combination of the laser chip and the frequency doubler chip.