Sökning: "optical detectors"

Visar resultat 1 - 5 av 78 avhandlingar innehållade orden optical detectors.

  1. 1. Thin films and optical detectors made of YBa2Cu3O7-x

    Författare :Martin Danerud; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; BaF2< sub>; YBa2< sub>Cu3< sub>O7-x< sub>; ECR; bolometric; annealing; sapphire; SrTiO3< sub> 100 ; optical detectors; coevaporation; c-axis orientation; in situ;

    Sammanfattning : .... LÄS MER

  3. 2. 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

  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. Optical Diagnostic Techniques Applied in Practical Combustion Devices and Processes

    Författare :Joakim Rosell; Förbränningsfysik; []
    Nyckelord :Optical diagnostics; LIF; OH; CO; CH2O; CH; Optical Engines; Fysicumarkivet A:2016:Rosell;

    Sammanfattning : Optical measurement techniques have proven to be useful tools for studying combustion-related phenomenon. The fact that the techniques are optical facilitates performing the measurements without impinging upon the measurement object, such as the combustion event that can be involved. LÄS MER

  7. 5. Characterisation and Modelling of Graphene FETs for Terahertz Mixers and Detectors

    Författare :MICHAEL ANDERSSON; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; graphene; millimetre and submillimetre waves; power detectors; nonlinear device modelling; microwave amplifiers; nanofabrication; integrated circuits; noise modelling; Field-effect transistors FETs ; terahertz detectors; Volterra; subharmonic resistive mixers;

    Sammanfattning : Graphene is a two-dimensional sheet of carbon atoms with numerous envisaged applications owing to its exciting properties. In particular, ultrahigh-speed graphene field effect transistors (GFETs) are possible due to the unprecedented carrier velocities in ideal graphene. LÄS MER