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:
Oct. 25, 2016
Filed:
May. 22, 2013
M Squared Lasers Limited, Glasgow, GB;
Gareth Thomas Maker, Glasgow, GB;
M SQUARED LASERS LIMITED, Glasgow, GB;
Abstract
A tunable reference cavity () with two independently controllable mirrors () is disclosed. The mirrors are mounted on respective piezoelectric crystals () so that thermal expansion of the piezoelectric crystals moves the cavity mirrors in the same direction along a longitudinal axis of the reference cavity thereby reducing a change of the cavity length. Also disclosed is a system for locking and scanning the output of a laser cavity (). An error signal is generated between an output of the laser cavity () and the transmission () of the laser through the external reference cavity (). A dual piezo-actuated mirror () permits processing of the error signal () with separate signal processing circuits () used to provide an electrical feedback signal to the dual piezoelectric crystal ().