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Photonic terahertz-wave generation, radiation and quasioptical integration

Biddut Banik (Institutionen för mikroteknologi och nanovetenskap, Fysikalisk elektronik)
Göteborg : Chalmers University of Technology, 2007. - 88 s.

This thesis deals with the uni-travelling-carrier photodiode (UTC-PD) based photonic generation of terahertz waves, antenna designs for the terahertz radiation and a novel catadioptric lens for quasioptical integration. The ongoing and accomplished research work on the UTC-PD, its limitations and optimisation scopes for attaining higher bandwidth and higher output power have been discussed. An equivalent circuit of the UTC-PD is also proposed and has been fitted to S11 measurements up to 67 GHz. Several plausible quasioptical and non-quasioptical integration schemes for different UTC-PD application areas have also been discussed. Optimising for output power requires careful tradeoffs involving the epitaxial layer design, optical coupling, circuit design and antenna design. Considering the tradeoffs, several schemes for free-space THz generation and waveguide integration techniques have been discussed. A novel catadioptric lens which is suitable for microwave and terahertz applications, for instance near-field imaging, has been presented. The focusing property of the lens has been investigated using a 3D full-wave electromagnetic solver. Furthermore, the proposed catadioptric lens has been designed and fabricated from Delrin. Simulation and measurement results have been presented.

Nyckelord: Catadioptric lens, computer aided engineering, dielectric loaded antennas, dipole antennas, III-V semiconductors, imaging, indium compounds, lens antennas, near-field imaging, near-field optics, microwave imaging, millimetre wave imaging, millimetre wave generation, optical mixers, photodiodes, photomixers, semiconductor device modelling, semiconductor diodes, semiconductor heterojunctions, slot antennas, submillimetre wave integrated circuits, submillimeter wave generation, uni-travelling-carrier photodiodes, terahertz sources

Denna post skapades 2007-09-03. Senast ändrad 2008-06-24.
CPL Pubid: 46616


Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Fysikalisk elektronik (2007-2010)


Övrig elektroteknik, elektronik och fotonik

Chalmers infrastruktur

Relaterade publikationer

Inkluderade delarbeten:

A novel catadioptric dielectric lens for microwave and terahertz applications


Datum: 2007-09-25
Tid: 10:00
Lokal: Kollektorn (A423), MC2, Chalmers, Kemivägen 9, Göteborg.
Opponent: Dr. Stellan Jacobsson, Food Radar Systems AB, c/o SIK, SE- 402 29 Göteborg.

Ingår i serie

Technical report MC2 - Department of Microtechnology and Nanoscience, Chalmers University of Technology 104