Essays about: "kvantkaskadlaser"
Found 3 essays containing the word kvantkaskadlaser.
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1. Electric Field Domains in Quantum Cascade Lasers
University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Matematisk fysikAbstract : Quantum cascade lasers (QCLs) are periodic semiconductor heterostructures, capable of producing laser gain. They have become an important source of coherent radiation in the mid infrared, and THz frequency regions. QCLs are non-linear electric devices, and often have bias regions of negative differential resistivity (NDR). READ MORE
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2. A Measurement Platform for Characterization of Quantum Cascade Lasers
University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)Abstract : A measurement platform has been built to characterize quantum cascade lasers regrown at KTH by measuring their spectral and electrical properties at room temperature. Since the current source used in this work had a compliance voltage which was too low to get above threshold, an adapter was made to put an external voltage source in series with it, raising the voltage over the laser. READ MORE
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3. Construction and Optimization of an Apparatus for Detection of Nitric Oxide through Faraday Modulation Spectroscopy
University essay from Umeå universitet/Institutionen för fysikAbstract : Faraday modulation spectroscopy (FAMOS) is a technique for detection of paramagnetic molecules. By applying a magnetic field over a gaseous sample, the presence of paramagnetic species will rotate the polarization plane of light, addressing a transition in such a species. READ MORE
