Terahertz Emission by Difference Frequency Generation in Nonlinear Quantum Cascade Lasers
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Beschreibung
The THz regime is of high interest for commercial applications for which the newly emerged device class of THz DFG-QCLs is a promising candidate. This thesis improves current state of the art device concepts in two major aspects: active region design and waveguide configuration for THz extraction. The active region design is optimized to a single period design, which simultaneously provides optical gain and a nonlinear susceptibility for nonlinear THz generation. The novel waveguide configuration allows for vertical extraction of the THz mode, breaking previous limits of prevailing device concepts.
Autor*in
Frederic Demmerle
Themen in »Terahertz Emission by Difference Frequency Generation in Nonlinear Quantum Cascade Lasers«
Difference Frequency Generation Laser Nonlinear Optics