Sökning: "infrared detectors"

Visar resultat 1 - 5 av 33 avhandlingar innehållade orden infrared detectors.

1. 1. Process development of III-V-based infrared detectors

   Författare :David Ramos Santesmases; Per-Erik Hellström; Sanjay Krishna; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; infrared detectors; Type-II superlattice; surface leakage; high operating temperature; passivation; optical concentration; modulation transfer function; noise.; infraröda detektorer; Typ-II supergitter; ytströmmar; hög arbetstemperatur; passivering; optisk koncentration; moduleringsöverföringsfunktion; brus; Informations- och kommunikationsteknik; Information and Communication Technology;

   Sammanfattning : Type-II Superlattice (T2SL) detectors have revolutionized the field of infraredimaging, establishing themselves as the forefront technology in defense, space,and industrial applications. These detectors enable larger formats and higheroperating temperatures (HOT) that minimize the need for bulky and energyconsumingcryogenic cooling, paving the way for imaging systems with reducedSize, Weight, and Power (SWaP). LÄS MER

3. 2. Position Sensitive Detectors : Device Technology and Applications in Spectroscopy

   Författare :Henrik Andersson; Hans-Erik Nilsson; Göran Thungström; Jan Linnros; Mittuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Position sensitive detectors; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

   Sammanfattning : This thesis deals with the development, processing and characterization of position sensitive detectors and, in addition, to the development of compact and cost effective spectrometers. Position sensitive detectors are used to measure, with great accuracy and speed, the position of a light spot incident on the surface. LÄS MER

4. 3. Fabrication and Characterization of Photon Radiation Detectors

   Författare :Claes Mattsson; Hans-Erik Nilsson; Göran Thungström; Mikael Lindeberg; Mittuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermal Detectors; Posistion Sensitive Detectors; Electronics; Elektronik;

   Sammanfattning : This thesis involves a study the fabrication and characterization of photon radiation detectors. The focus has been to develop and improve the performance of optical measurement systems, but also to reduce their cost. The work is based on the study of two types of detectors, the position sensitive detector and the thermal detector. LÄS MER

5. 4. III-V Nanowire-based Infrared Photodetectors : Design, Fabrication and Characterization

   Författare :Vishal Jain; Fasta tillståndets fysik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; nanowire; infrared; photodetector; APD; thermal imaging; telecommunication; fabrication; InP; InAsP; Fysicumarkivet A:2016:Jain;

   Sammanfattning : Semiconductors are the backbone of almost every electrical or optical component, one of them being photodetectors. Photodetectors are used in many applications such as digital cameras or solar panels. They can also be designed to detect the omnipresent infrared radiation, discovered in 1800, which is invisible to human eye. LÄS MER

7. 5. Thermal detector with integrated absorber structure for mid-IR gas detection

   Författare :Shakeel Ashraf; Göran Thungström; Peter Enoksson; Mittuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermal detectors; Thermopile detectors; Infrared absorbers; SU-8 epoxy; Interferometric and Multi-layered absorber; Seebeck coefficient; Molybdenum di-sulfide;

   Sammanfattning : Measurement of the concentration of greenhouse gases, such as carbon dioxide(CO 2 ) and methane (CH 4 ), in the atmosphere has received significant attention in the last few decades. This work focusses on the development of high-performance thermopile detectors for use with the non-dispersive infrared (NDIR) measurements of such gases. LÄS MER