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Paper Abstract and Keywords
Presentation 2021-05-26 13:20
[Invited Talk] Frequency shifted terahertz-wave generation pumped by fequency shifted feedback laser
Koji Suizu (Chiba Inst. Tech.) MWP2021-1
Abstract (in Japanese) (See Japanese page) 
(in English) In the optical region distance measurement, frequency domain reflectometry (FDR measurement) using FSF laser (Frequency Shifted Feedback laser: FSF laser) is performed, and precise distance measurement in long range between the measuring device and the target are realized. FSF laser is a special laser light source whose frequency changes at ultra high speed and has many merits to distance measurement compared to that using pulsed laser as a light source, so FSF laser is applied to precise distance measurement and non-contact three dimensional measurement, and others. By using this FSF laser as a light source of terahertz wave (THz-wave) generation, generated THz-wave has frequency shifted character, so the FS THz-wave (Frequency Shifted THz-wave: FS THz-wave) can be used for precious distance measurement. And the FS THz-wave could be applied to nondestructive inspection for buildings, by using transmissivity of THz-wave for dielectric materials. We successfully demonstrated FS THz-wave generation using UTC-PC (Uni Traveling Carrier Photodiode) pumped by FSF laser and single frequency tunable laser. And, we successfully measured beat frequency of interfered FS THz-waves by Michelson interferometer of THz-frequency range using Schottky Barrier Diode. The measured beat frequency agreed well with theoretical values calculated from optical path lengths in interferometer.
Keyword (in Japanese) (See Japanese page) 
(in English) Terahertz wave / Frequency Shifted Feedback Laser / Nondestructive Inspection / / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 39, MWP2021-1, pp. 1-5, May 2021.
Paper # MWP2021-1 
Date of Issue 2021-05-19 (MWP) 
ISSN 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)
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Conference Information
Committee MWP  
Conference Date 2021-05-26 - 2021-05-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MWP 
Conference Code 2021-05-MWP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Frequency shifted terahertz-wave generation pumped by fequency shifted feedback laser 
Sub Title (in English)  
Keyword(1) Terahertz wave  
Keyword(2) Frequency Shifted Feedback Laser  
Keyword(3) Nondestructive Inspection  
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1st Author's Name Koji Suizu  
1st Author's Affiliation Chiba Insititute of Technology (Chiba Inst. Tech.)
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Speaker Author-1 
Date Time 2021-05-26 13:20:00 
Presentation Time 50 minutes 
Registration for MWP 
Paper # MWP2021-1 
Volume (vol) vol.121 
Number (no) no.39 
Page pp.1-5 
#Pages 5 
Date of Issue 2021-05-19 (MWP) 

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