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Paper Abstract and Keywords
Presentation 2012-01-26 17:55
Homodyne Detection of Terahertz-waves Using Low-Temperature-Grown GaAs at 1.5μm
Genki Kitahara, Shintaro Hisatake (Osaka Univ.), Katsuhiro Ajito, Naoya Kukutsu, Ho-Jin Song (NTT), Tadao Nagatsuma (Osaka Univ.) PN2011-53 OPE2011-169 LQE2011-155 EST2011-103 MWP2011-71
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, frequency-domain techniques based on a continuous terahertz wave technology have extensively studied because it provides a higher signal-to-noise ratio and resolution in spectroscopic applications. Previous frequency-domain spectroscopic systems employ an InGaAs exited by 1.5 m or a low-temperature-grown (LTG) GaAs exited by 850 nm as a photoconductive mixer. Although 1.5 μm telecom-wavelength technology is essential in universal instrumentation of the systems, the resistivity of the InGaAs is about 1 kΩ cm, which leads relatively higher dark noise compared to LTG- GaAs. In this paper, we report terahertz wave homodyne detection system using a uni-traveling-carrier photodiode and the LTG-GaAs at 1.5 m. A dual-frequency optical source is used for both the generation and detection. Signal-to-noise ratio of about 30 dB was achieved from 90 GHz to 150 GHz with the system.
Keyword (in Japanese) (See Japanese page) 
(in English) Terahertz waves / frequency-domain / terahertz spectroscopy / homodyne-detection / LTG-GaAs / 1.5 μm / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 416, MWP2011-71, pp. 127-131, Jan. 2012.
Paper # MWP2011-71 
Date of Issue 2012-01-19 (PN, OPE, LQE, EST, MWP) 
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 PN2011-53 OPE2011-169 LQE2011-155 EST2011-103 MWP2011-71

Conference Information
Committee EMT PN LQE OPE MWP EST IEE-EMT  
Conference Date 2012-01-26 - 2012-01-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Osaka Univ. Convention Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Photonic integrated circuits and devices, swtiching, PLC, fiber devices, waveguide analysis, and others 
Paper Information
Registration To MWP 
Conference Code 2012-01-EMT-PN-LQE-OPE-MWP-EST-EMT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Homodyne Detection of Terahertz-waves Using Low-Temperature-Grown GaAs at 1.5μm 
Sub Title (in English)  
Keyword(1) Terahertz waves  
Keyword(2) frequency-domain  
Keyword(3) terahertz spectroscopy  
Keyword(4) homodyne-detection  
Keyword(5) LTG-GaAs  
Keyword(6) 1.5 μm  
Keyword(7)  
Keyword(8)  
1st Author's Name Genki Kitahara  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Shintaro Hisatake  
2nd Author's Affiliation Osaka University (Osaka Univ.)
3rd Author's Name Katsuhiro Ajito  
3rd Author's Affiliation NTT Corporation (NTT)
4th Author's Name Naoya Kukutsu  
4th Author's Affiliation NTT Corporation (NTT)
5th Author's Name Ho-Jin Song  
5th Author's Affiliation NTT Corporation (NTT)
6th Author's Name Tadao Nagatsuma  
6th Author's Affiliation Osaka University (Osaka Univ.)
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Speaker Author-1 
Date Time 2012-01-26 17:55:00 
Presentation Time 25 minutes 
Registration for MWP 
Paper # PN2011-53, OPE2011-169, LQE2011-155, EST2011-103, MWP2011-71 
Volume (vol) vol.111 
Number (no) no.412(PN), no.413(OPE), no.414(LQE), no.415(EST), no.416(MWP) 
Page pp.127-131 
#Pages 5 
Date of Issue 2012-01-19 (PN, OPE, LQE, EST, MWP) 

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