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:
Mar. 08, 1988
Filed:
Mar. 17, 1986
Weng W Chow, Cedar Crest, NM (US);
Abstract
A phase locked two-dimensional semiconductor laser array is disclosed that emits a unified wavefront using columns of individual lasers, each laser having a slant mirror between it and other lasers in its column. The individual lasers are all evanescently coupled to the neighboring lasers. The slant mirrors reflect the light from the lasers next to it upwards out of the face of the array. The phase locking is accomplished by the evanescent wave coupling. The plane (uniform) wavefront is accomplished by the design of the array in which: each laser in an i.sup.th column forms an optical path length of x.sub.i with the slant mirror adjacent to it; and the optical path length between mirrors and lasers in the (i+l).sup.th column is given by: x.sub.i =x.sub.i+l .+-.n(.lambda./2) where .lambda. equals a measure of wavelength of the light transmitted out of the array, and n is an odd integer.