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Vertically illumina...
Vertically illuminated TW-UTC photodiodes for terahertz generation
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- Barrientos Z, C. M. (author)
- Universidad de Chile (UCH),University of Chile (UCH)
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- Calle, Victor (author)
- Universidad de Chile (UCH),University of Chile (UCH),Chalmers tekniska högskola,Chalmers University of Technology
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- Alvarez B, J. A. (author)
- Universidad de Chile (UCH),University of Chile (UCH),Chalmers tekniska högskola,Chalmers University of Technology
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- Mena, F. P. (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Universidad de Chile (UCH),University of Chile (UCH)
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- Vukusic, Josip, 1972 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Stake, Jan, 1971 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Michael, E. A. (author)
- Universidad de Chile (UCH),University of Chile (UCH)
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(creator_code:org_t)
- ISBN 9780819491534
- SPIE, 2012
- 2012
- English.
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In: Proceedings of SPIE - The International Society for Optical Engineering. - : SPIE. - 0277-786X .- 1996-756X. - 9780819491534 ; 8452
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Abstract
Subject headings
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- More efficient and powerful continuous-wave photonic mixers as terahertz sources are motivated by the need of more versatile local oscillators for submillimeter/terahertz receiver systems. Uni-Travelling Carrier (UTC) photodiodes are very prospective candidates for reaching this objective, but so far only have been reported as lumped-elements or as edge-illuminated optical-waveguide travelling-wave (TW) devices. To overcome the associated power limitations of those implementations, we are developing a novel implementation of the UTC photodiodes which combines a traveling-wave photomixer with vertical velocity-matched illumination in a distributed structure. In this implementation called velocity-matched travelling-wave uni-travelling carrier photodiode, it is possible to obtain in-situ velocity matching of the beat-fringes of the two angled laser beams with the submm/THz-wave on the stripline. In this way, minimum frequency roll-off is achieved by tuning the angle between the two laser beams. A first design of these TW-UTC PDs from our Terahertz Photonics Laboratory at University of Chile has been micro-fabricated at the MC2 cleanroom facility at Chalmers Technical University.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- Radiation source
- Terahertz
- Photomixer
- Sub-millimeter
- Traveling wave
- Laser mixing
- Local oscillator
Publication and Content Type
- kon (subject category)
- ref (subject category)
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