NDLI: In-plane surface plasmonics integrated with THz quantum cascade lasers for high collimation

Content Provider	IEEE Xplore Digital Library
Author	Guozhen Liang Dupont, E. Fathololoumi, S. Wasilewski, Z.R. Dayan Ban Siu Fung Yu Lianhe Li Davies, A.G. Linfield, E. Hui Chun Liu Qi Jie Wang
Copyright Year	2014
Description	Author affiliation: Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore (Guozhen Liang; Qi Jie Wang) \|\| Dept. of Phys., Shanghai Jiao Tong Univ., Shanghai, China (Hui Chun Liu) \|\| Nat. Res. Council, Ottawa, ON, Canada (Dupont, E.; Fathololoumi, S.) \|\| Sch. of Electron. & Electr. Eng., Univ. of Leeds, Leeds, UK (Lianhe Li; Davies, A.G.; Linfield, E.) \|\| Dept. of Appl. Phys., Hong Kong Polytech. Univ., Kowloon, China (Siu Fung Yu) \|\| Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada (Wasilewski, Z.R.; Dayan Ban)
Abstract	We report planar integration of tapered Terahertz (THz) quantum cascade lasers (QCLs) with spoof surface plasmon (SSP) structures. The SSP structure consists of one plasmonic coupler and periodically arranged scatters. The resulting surface-emitting THz beam is highly collimated with a beam divergence as narrow as 3.6°×9.7°. As the beam divergence is inverse proportional to the light emission area, this low divergence indicates a good waveguiding property of the SSP structure, while the low optical background of the beam implies a high coupling efficiency of the THz wave from the laser cavity to the SSPs. Since all the structures are in-plane, this scheme provides a promising platform where the well-established SP techniques can be employed to engineer the THz QCL beam with high flexibilities.
Starting Page	1
Ending Page	2
File Size	409067
Page Count	2
File Format	PDF
ISBN	9781557529992
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-06-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	The Optical Society
Subject Keyword	Surface waves Surface emitting lasers Plasmons Educational institutions Laser beams Quantum cascade lasers Optical surface waves
Content Type	Text
Resource Type	Article

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