Paper Abstract and Keywords |
Presentation |
2016-12-19 16:30
Improvement of light receiving efficiency of Asymmetric-Dual-Grating-Gate High-Electron-Mobility-Transistor by series array and lens integration Tomotaka Hosotani, Fuzuki Kasuya, Hiroki Taniguchi, Takayuki Watanabe, Tetsuya Suemitsu, Taiichi Otsuji (Tohoku Univ.), Yuma Takida, Hiromasa Ito, Hiroaki Minamide (RIKEN), Tadao Ishibashi (NTT Electronics Techno), Makoto Shimizu (NEL), Akira Satou (Tohoku Univ.) ED2016-84 Link to ES Tech. Rep. Archives: ED2016-84 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Asymmetric-dual-grating-gate high-electron-mobility-transistors (ADGG-HEMTs) are expected for room-temperature operating, high-speed THz detectors. However, their low light receiving efficiency is one of serious concerns because the focused spot size of free space THz wave is much smaller than the active area of ADGG-HEMTs. To improve this, we examine 1) increasing the effective active area by implementing series array of detectors and 2) shrinking the spot size by integrating a detector with a hyper-hemispherical silicon lens. We report the 4-fold enhancement of responsivity by series array of 4 detectors and the 6-fold enhancement by the silicon lens integration. Also, we discuss the frequency characteristics on silicon lens module. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
HEMT / Plasmon / THz detector / array / Si lens / / / |
Reference Info. |
IEICE Tech. Rep., vol. 116, no. 375, ED2016-84, pp. 23-28, Dec. 2016. |
Paper # |
ED2016-84 |
Date of Issue |
2016-12-12 (ED) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
Download PDF |
ED2016-84 Link to ES Tech. Rep. Archives: ED2016-84 |
|