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:
Jun. 16, 1998
Filed:
Mar. 14, 1997
Chiaki Goto, Kanagawa-ken, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A laser includes a laser medium, a light source for emitting light which pumps the laser medium, a pair of mirrors which are disposed on opposite sides of the laser medium and form a resonator, an etalon which is disposed in the resonator in order to make the oscillation mode of a laser beam a single longitudinal mode and a nonlinear optical crystal which is disposed in the resonator and converts the laser beam to a second harmonic. The effective thickness t of the etalon satisfies the condition that 2t(n.sub.SH -n.sub.FM)/.lambda..sub.SH is substantially an integer wherein .lambda..sub.SH represents the wavelength of the second harmonic, n.sub.FM represents the refractive index of the etalon for the fundamental wave and n.sub.SH represents the refractive index of the etalon for the second harmonic.