NDLI: At the Dawn of a New Era in Terahertz Technology

Content Provider	IEEE Xplore Digital Library
Author	Hosako, I. Sekine, N. Patrashin, M. Saito, S. Fukunaga, K. Kasai, Y. Baron, P. Seta, T. Mendrok, J. Ochiai, S. Yasuda, H.
Copyright Year	1963
Abstract	The National Institute of Information and Communications Technology (NICT, Japan) started the Terahertz Project in April 2006. Its fundamental purpose in the next five years is to enable a nationwide technical infrastructure to be created for diverse applications of terahertz technology. The technical infrastructure includes the development of semiconductor devices such as terahertz quantum cascade lasers, terahertz-range quantum well photodetectors, and high-precision tunable continuous wave sources. It also includes pulsed terahertz measurement systems, modeling and measurement of atmospheric propagation, and the establishment of a framework to construct a materials database in the terahertz range including standardization of the measurement protocol. These are common technical infrastructure even in any terahertz systems. In this article, we report the current status of developments in these fields such as terahertz quantum cascade lasers (THz-QCLs) (with peak power of 30 mW, 3.1 THz), terahertz-range quantum well photodetectors (THz-QWPs) (tuned at 3 THz) an ultrawideband terahertz time domain spectroscopy (THz-TDS) system (with measurement range of from 0.1 to 15 THz), an example of a database for materials of fine art, and results obtained from measuring atmospheric propagation.
Sponsorship	IEEE Publication
Starting Page	1611
Ending Page	1623
Page Count	13
File Size	1122980
File Format	PDF
ISSN	00189219
Volume Number	95
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-08-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Submillimeter wave technology Quantum cascade lasers Atmospheric measurements Submillimeter wave measurements Pulse measurements Photodetectors Submillimeter wave propagation Optical materials Databases Current measurement terahertz time domain spectroscopy Array detector atmospheric propagation material database quantum cascade laser terahertz electromagnetic wave terahertz-range quantum well photodetector
Content Type	Text
Resource Type	Article
Subject	Computer Science Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Terahertz Quantum Well Photodetectors

Measurement of the linewidth of a terahertz quantum cascade laser

Reflection imaging with terahertz quantum-cascade laser and quantum-well photodetector

Effects of doping concentration on terahertz quantum-cascade lasers

Direct detection of a fast modulated terahertz light with a spectrally matched quantum-well photodetector

Two-colour THz quantum well photodetectors

Terahertz and ART

Ultra-compact low threshold whispering-gallery terahertz quantum-cascade lasers

Isotopic Ratio Measurements of Atmospheric Carbon Dioxide Using a 4.3 μm Pulsed Quantum Cascade Laser

At the Dawn of a New Era in Terahertz Technology

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Terahertz Quantum Well Photodetectors

Measurement of the linewidth of a terahertz quantum cascade laser

Reflection imaging with terahertz quantum-cascade laser and quantum-well photodetector

Effects of doping concentration on terahertz quantum-cascade lasers

Direct detection of a fast modulated terahertz light with a spectrally matched quantum-well photodetector

Two-colour THz quantum well photodetectors

Terahertz and ART

Ultra-compact low threshold whispering-gallery terahertz quantum-cascade lasers

Isotopic Ratio Measurements of Atmospheric Carbon Dioxide Using a 4.3 μm Pulsed Quantum Cascade Laser

At the Dawn of a New Era in Terahertz Technology