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Wednesday 12 November 2014, 14:15-15:15
(SP Wednesday Workshop) - Fibre Coupled Terahertz Quantum Cascade Lasers
- đ¤ Speaker: Mr Robert Wallis, University of Cambridge
- đ Date & Time: Wednesday 12 November 2014, 14:15 - 15:15
- đ Venue: Mott Seminar Room, Cavendish Laboratory, Department of Physics
Abstract
The terahertz (THz) frequency range provides a rich area of physics to be explored, and has proved useful in many real-world applications, such as security imaging and gas sensing. The terahertz quantum cascade laser (QCL) is a unipolar heterogeneous semiconductor laser that has the potential to be the THz source of choice for many of these applications, being both powerful and frequency selective. However, these devices suffer from highly divergent beam patterns, proving detrimental to power delivery over longer distances. In this talk I shall give an overview of the THz QCL , and discuss progress towards a fibre coupled QCL system. I shall also outline potential applications of such a system, and areas for improvement in the existing methodology.
Series This talk is part of the Semiconductor Physics Group Seminars series.
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