Teledyne Scientific and Imaging, LLC

Ya-Chi Chen

Jeffrey DeNatale

Bruce Kevin Winker

Keisuke Shinohara

Philip Stupar

Robert L Borwick, Iii

Milind Mahajan

Chialun Tsai

Dong-Feng Gu

Avijit Bhunia

Miguel Urteaga

Casey King

A FET employing a micro-scale device array structure comprises a substrate on which an epitaxial active channel area has been grown, with a plurality of micro-cells uniformly distributed over the active channel area. Each micro-cell comprises a source electrode, a drain electrode, and at least one gate electrode, with a first metal layer interconnecting either the drain or the source electrodes, a second metal layer interconnecting the gate electrodes, and a third metal layer interconnecting the other of the drain or source electrodes. Each micro-cell preferably comprises a source or drain electrode at the center of the micro-cell, with the corresponding drain or source electrode surrounding the center electrode. The number and width of the gate electrodes in each micro-cell may be selected to achieve a desired power density and/or heat distribution, and/or to minimize the FET's junction temperature. The FET structure may be used to form, for example, HEMTs or MESFETs.

FET with micro-scale device array

A laser target board apparatus is provided for detecting spatial and temporal intensity distribution of high energy laser beams. The laser target board apparatus may include a panel having a plurality of openings and a plurality of optical rods placed therein. The laser target board apparatus may further have an optic fiber array positioned substantially parallel to and behind the panel and separated from the panel by a predetermined distance. At least one lens is configured to receive photons emitted from a second end of each optic fiber unit of the optic fiber array, and at least one camera is configured to detect the photons. A processor is configured to analyze temporal and spatial distribution of intensity of the received high energy laser beam based on data generated by the at least one camera.

High energy laser target board apparatus

A vapor cell includes an interrogation cell in a substrate, the interrogation cell having an entrance window and an exit window, and a first transparent thin-film heater in thermal communication with the entrance window. The transparent thin-film heater has a first layer in communication with a first pole contact at a proximal end of the heater and a layer coupler contact at a distal end, a second layer in communication with a second pole contact at the proximal end, and the second layer electrically coupled to the layer coupler contact at the distal end. An insulating layer is sandwiched between the first and second layers. The insulating layer has an opening at the distal end to admit the layer coupler contact and to insulate the remainder of the second layer from the first layer. The first and second pole contacts are available to complete an electric circuit at the proximal end, with magnetic fields for each of the first and second layers oriented in opposing directions when a current is applied through the circuit.

System for heating a vapor cell

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Simi Valley, CA, United States of America

Ya-Chi Chen