NDLI: On-chip integration of laser-ablated zone plates for detection enhancement of InGaAs bow-tie terahertz detectors

Content Provider	IET Digital Library
Author	Minkevičius, L. Tamošiūnas, V. Madeikis, K. Voisiat, B. Kašalynas, I. Valušis, G.
Abstract	One order of magnitude detection enhancement of bow-tie-shaped InGaAs-based terahertz detectors by on-chip incorporation of the secondary diffractive optics is reported. Zone plates were produced directly on the bottom surface of 500 µm-thick InP substrate using the direct laser write technique after an array of InGaAs detectors was formed on the front surface of the wafer. Measurements of detected signal dependence on the angle of the incident wave were performed at 0.76 THz and compared with finite-difference time-domain simulation results. Good correlation of the results shows that the observed enhancement is indeed caused by the focusing performance of the zone plate rather than by the exceptional sensitivity of the single detector.
Starting Page	1367
Ending Page	1369
Page Count	3
ISSN	00135194
Volume Number	50
e-ISSN	1350911X
Issue Number	Issue 19, Sep (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/50/19
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2014.1893
Journal	Electronics Letters
Publisher Date	2014-09-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Angle Measurement Angular Measurement Bow–tie-shaped Terahertz Detector Detected Signal Dependence Measurement Diffractive Optical Element Direct Laser Write Technique Finite Difference Time-Domain Analysis Finite-difference Time-domain Simulation Frequency 0.76 THz Gallium Arsenide Indium Compound InGaAs InP Laser Ablation Laser Material Processing Laser-ablated Zone Plate Magnitude Detection Enhancement Measurement by Laser Beam Metrological Application of Lasers Microwave Circuit And Device Microwave Measurement Technique Numerical Method On-chip Integration Optical Focusing Optical Sonsor Secondary Diffractive Optics Sensing Device And Transducers Size 500 Mum Spatial Variables Measurement Submillimetre Wave Detector Terahertz Wave Detector
Content Type	Text
Resource Type	Article
Subject	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 zone plates with integrated laser-ablated bandpass filters

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

Plasmonic nano bow-tie arrays with enhanced LSPR refractive index sensing

THz detectors get in line*

The response rate of room temperature terahertz InGaAs-based bow-tie detector with broken symmetry

Simulation study for the use of transistor contacts for sub-terahertz radiation detection

Compact terahertz detector based on lightweight 3D-printed lens packaging

340 GHz lens-coupled 4 × 4 GaAs detector array for terahertz imaging applications

Electromagnetic wave absorption characteristics of H-shaped fractal antenna for dual-band microbolometer and study on the influence of bias line resistivity on microbolometer characteristics

On-chip integration of laser-ablated zone plates for detection enhancement of InGaAs bow-tie terahertz detectors

Similar Documents

Terahertz zone plates with integrated laser-ablated bandpass filters

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

Plasmonic nano bow-tie arrays with enhanced LSPR refractive index sensing

THz detectors get in line*

The response rate of room temperature terahertz InGaAs-based bow-tie detector with broken symmetry

Simulation study for the use of transistor contacts for sub-terahertz radiation detection

Compact terahertz detector based on lightweight 3D-printed lens packaging

340 GHz lens-coupled 4 × 4 GaAs detector array for terahertz imaging applications

Electromagnetic wave absorption characteristics of H-shaped fractal antenna for dual-band microbolometer and study on the influence of bias line resistivity on microbolometer characteristics

On-chip integration of laser-ablated zone plates for detection enhancement of InGaAs bow-tie terahertz detectors