Cymer, Inc.

Huckleberry B Dorn

Marco Giovanardi

Alexander Igorevich Ershov

Richard L Sandstrom

Robert N Jacques

R Kyle Webb

Gregory Francis

John W Nelson

Plash P Das

Kyle P Erlandsen

The present invention provides a modular high repetition rate ultraviolet gas discharge laser light source with a beam delivery to a production line machine. The system includes an enclosed and purged beam path with beam pointing control for delivery the laser beam to a desired location such as the entrance port of the production line machine. Preferred embodiments include equipment for beam attenuation, equipment for automatic feedback beam alignment and equipment for accurate optics module positioning at installation and during maintenance. In preferred embodiments, the production line machine is a lithography machine and two separate discharge chambers are provided, one of which is a part of a master oscillator producing a very narrow band seed beam which is amplified in the second discharge chamber. This MOPA system is capable of output pulse energies approximately double the comparable single chamber laser system with greatly improved beam quality. A pulse stretcher more than doubles the output pulse length resulting in a reduction in pulse power (mJ/ns) as compared to prior art laser systems. This preferred embodiment is capable of providing illumination at a lithography system wafer plane which is approximately constant throughout the operating life of the lithography system, despite substantial degradation of optical components.

Lithography laser with beam delivery and beam pointing control

A shoe having at least one elongated shape memory alloy element and an electric circuit which when energized will produce a tightening of the shoe upper around the foot of a wearer. In a preferred embodiment, the shoe in one of a pair of golf shoes and the circuit in the shoe is energized by a switch in the heel that is turned on by the golfer clicking his heels together. Typically the golfer does this prior to each important swing of a golf club. A battery contained in the shoe provides a power source to produce a current in the circuit that heats the shape memory alloy causing it to reduce its length providing the tightening of the shoe uppers.

Shoe with quick tightening upper

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Boston, MA, United States of America

Huckleberry B Dorn