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:
Feb. 20, 1990
Filed:
Jun. 03, 1988
Koji Yasui, Hyogo, JP;
Masaaki Tanaka, Hyogo, JP;
Shigenori Yagi, Hyogo, JP;
Masaki Kuzumoto, Hyogo, JP;
Yasuhito Myoi, Hyogo, JP;
Kazuki Kuba, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A laser apparatus has a phase regulator for regulating phase of output laser beam is provided, in which a full reflection portion of an output mirror is made partially reflective and a relative optical length thereof to a non-reflection portion of the output mirror is regulated by a relative thickness thereof. In one aspect of the invention, a coating provided on a center portion of an inner surface of an output mirror of a resonator comprises a partially reflective coating and a phase difference between laser beam portions passing through the center portion and a surrounding portion is regulated by a thin membrane having same refraction index as that of a matrix of the output mirror and provided between the matrix and a coating on either surface of the output mirror.