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Computer chips are packed with billions of microscopic transistors that enable powerful computation, but also generate a great deal of heat. A buildup of heat can slow a computer processor and make it...
Temperature performance analysis of terahertz quantum cascade lasers: Vertical versus diagonal designs
Temperature performance analysis terahertz quantum cascade lasers Vertical versus diagonal designs
2011/9/14
Resonant phonon depopulation terahertz quantum cascade lasers based on vertical and diagonal lasing transitions are systematically compared using a well established ensemble Monte-Carlo approach. The ...
Planar designs for electromagnetically induced transparency in metamaterials
Planar designs electromagnetically induced transparency
2010/11/24
We present a planar design of a metamaterial exhibiting electromagnetically induced transparency that is amenable to experimental verification in the microwave frequency band.
External-cavity designs for phase-coupled laser diode arrays
External-cavity designs phase-coupled laser diode arrays
2010/11/16
We describe passive phase-locking architectures based on external-cavity setups to improve the brightness of diode laser bars. Volume Bragg gratings are used to stabilize the lase line. Numerical mode...