Other

Electro Scientific Industries, Inc.

Jeffrey A Albelo

Jeffrey Howerton

Robert B Reichenbach

Peter Pirogovsky

Joseph G LaChapelle

A micromachining device that utilizes a solid state laser beam scanner to steer and scan laser beams onto a moveable stage. There are no moving parts as in the galvometric scanner devices in current use. The laser beam scanner has two components, a variable frequency signal generator that is electrically connected to at least one substantially transparent and partially conductive substrate plate (hereinafter plate) with a generally planar face thereon that has a series of quantum dots (of an arbitrary size but narrow size distribution) affixed with the plate, where each of the quantum dots possess an inducible dipole moment, and each of the quantum dots are in electrical contact with the plate, where the quantum dots undergo an excitation and successive recombination (or relaxation) by the input of magnetic, optical or electrical signals.

High speed solid state micromachining device

A beam scanner for use in conjunction with the operational guidance system of a vehicle. The beam scanner can be used as part of an electromagnetic signal transmit module or an electromagnetic signal receive module in either a transmissive or reflective mode. The beam scanner is a substantially transparent and partially conductive substrate plate having at least one generally planar face thereon with a series of particles affixed with said plate, each of said particles of an arbitrary size, and each of said particles possessing an induced dipole moment, and each of said particles in electrical contact with said partially conductive substrate plate.

Apparatus and method for beam scanner

A light beam steering transmissive element with an arbitrarily sized aperture comprising at least one layer of a insulating matrix modified for increased polarizability under electrical, magnetic or optical stimulation, between two or more substrates that can be electrically configured to provide signal modulation (optical, magnetic or electrical) that will control the wavefronts of incident light, thereby taking off-axis electromagnetic signals and aligning them to the aperture of a receiving element positioned near the device, or the reverse, sending signals originating behind the steering device to a variety of user-defined angles in two or more dimensions.

The present invention is an electromagnetic signal modulator that is a control unit operationally coupled to a substantially transparent and partially conductive substrate plate assembly having a series of quantum dots that undergo an excitation and successive recombination (or relaxation) of their electrons by the input of magnetic, optical or electrical signals to switch, steer or otherwise modulate an electromagnetic beam incident on the substrate plate assembly. There are four factors that may be used to vary the quantum dot electromagnetic environment, providing operator flexibility as to how the modulation of the incident electromagnetic wave front is accomplished and to what degree.

Electromagnetic signal modulator

Beam scanner for autonomous vehicles

The invention is a method and apparatus for laser marking a stainless steel specimen with commercially desirable marks. The method includes providing a laser processing system having a laser, and laser optics and a controller with pre-determined laser pulse parameters, selecting the pre-determined laser pulse parameters associated with the desired mark, and directing the laser marking system to produce laser pulses having laser pulse parameters associated with the desired marks including temporal pulse widths greater than about 1 and less than about 1000 picoseconds.

Method and apparatus for reliably laser marking articles

Systems and methods are provided for scribing wafers with short laser pulses so as to reduce the ablation threshold of target material. In a stack of material layers, a minimum laser ablation threshold based on laser pulse width is determined for each of the layers. The highest of the minimum laser ablation thresholds is selected and a beam of one or more laser pulses is generated having a fluence in a range between the selected laser ablation threshold and approximately ten times the selected laser ablation threshold. In one embodiment, a laser pulse width in a range of approximately 0.1 picosecond to approximately 1000 picoseconds is used. In addition, or in other embodiments, a high pulse repetition frequency is selected to increase the scribing speed. In one embodiment, the pulse repetition frequency is in a range between approximately 100 kHz and approximately 100 MHz.

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Beaverton, OR, United States of America

Jeffrey A Albelo