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Terahertz Heterodyne Spectrometer using a Quantum Cascade Laser

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If you have a question about this talk, please contact Teri Bartlett .

High-resolution spectroscopy at terahertz frequencies is of crucial importance in astronomical observation and atmospheric remote sensing. It provides unique and important information on the history of our universe and its evolution, by getting into the insight of the physical and chemical conditions. Moreover, it can help to address questions about our own atmosphere such as ozone layer depletion and climate change problems. However, up to now this frequency region has rarely been accessible for high-resolution spectroscopy due to the lack of suitable local oscillator technology. The recently developed terahertz quantum cascade lasers become the most promising candidate as a novel solid-state terahertz source.

This talk is part of the Semiconductor Physics Group Seminars series.

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