Massachusetts Institute of Technology

Other

Cynosure, Inc.

Stablelase, Inc.

William C Goltsos

James R Leger

Tso Yee Fan

Antonio Sanchez-Rubio

James N Walpole

Richard C Williamson

Ivars Melngailis

Horace W Furumoto

Patrick N Everett

Robert H Rediker

Robert E Knowlden

Robert Sze

James R Legar

A lens system for use with a linearly arrayed light beam including a first optical element for receiving and redirecting different portions of the linearly arrayed light beam to different locations on an imaginary plane so as to generate a two-dimensional pattern of light beams on the imaginary plane; and a second optical element located at the imaginary plane and aligned with the two-dimensional pattern of light beams for redirecting each of the light beams of the two-dimensional pattern of light beams to any arbitrary direction.

Method and apparatus for efficient concentration of light from laser

The individual outputs of a large laser diode array are combined using an optical transformer of diffractive optics. To allow for the tolerances in the laser array and combining optics required for mass production, the system further includes corrector optics. The corrector optics includes individual lens elements which are fabricated to provide specific correction of faults in the individual lasers and associated combining optics resulting from manufacturing tolerances. The preferred corrector lenses include diffractive lenses fabricated by laser milling.

Fault tolerant optical system using diode laser array

A lens system for use with a light beam having a spatial cross-sectional distribution which is extended predominantly in one direction, including a first optical element for receiving and redirecting different portions of the light beam to different locations on an imaginary plane wherein at least two portions of said light beam are directed along two non-parallel paths so as to generate a two-dimensional pattern of light on the imaginary plane; and a second optical element located at the imaginary plane and aligned with the two-dimensional pattern of light for redirecting each portion of the two-dimensional pattern of light to a focal point. Alternatively, the lens system of the invention may be used to receive and redirect to a focal point each individual light beam of a linear array of light beams, or each portion of a two-dimensional light beam, or each individual light beam of a two-dimensional array of light beams.

A technique for measuring the distance between the edges of a feature positioned on a substrate wherein the feature is illuminated with light on either side of the edges and the light intensities at either side of each of the edges are detected and are balanced at the detected light intensities regions sufficiently removed from the edges to prevent an adverse diffractive effect thereon so as to produce regions of minimum light intensity at the edges, the positions of which can be determined and the distance between said regions of minimum intensity can be measured.

Measurements using balanced illumination optical microscopy

Apparatus and method for scaling solid-state devices to higher power using multiple sources each of which are separately collimated, followed by focusing of the pump radiation into gain medium colinear to laser mode using a moderated focus. A modularized system is also described.

Multiple-laser pump optical system

Growing community of inventors

Burlington, MA, United States of America

William C Goltsos