Detection And Signal Processing: Technical Realization: 22 - Rilegato

Witteman, W. J.

Rilegato

ISBN 10: 3540295992 ISBN 13: 9783540295990

Casa editrice: Springer Verlag, 2006

Riassunto

Thesecondpartdealswithampli?cationproblemsandtherecovery ofrepetitivesignalsburiedinnoise. Thelastpartisdevotedtosolvingthe problemsconnectedwithreachingtheultimatedetectionlimitorquantum limit. Thisisdoneforheterodynedetectionandphotoncounting. Although VIII Preface heterodynedetectionyieldstheultimatesensitivity,itsspatialmodesel- tivityand,ingeneral,thelowspectralpowerdensityofthesignalrequire sophisticatedprovisions. Thisisdiscussedindetail. Theinherentproblemsare analyzedandappropriatetechnicalsolutionsaredescribedtoreachtheul- matesensitivityfordetectingincoherentradiationandcommunicationsignals thatarerandomlyDopplershifted. Theresultsareillustratedwithexamples ofspacecommunication. Hengelo(O),January2006 W. J. Witteman Contents 1 RandomFluctuations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1. 1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1. 2 ThermalNoiseofResistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. 3 ShotNoise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. 3. 1 SpectralDistribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1. 3. 2 Photons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1. 4 FlickerNoise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1. 5 Generation RecombinationNoise. . . . . . . . . . . . . . . . . . . . . . . . . . 10 1. 6 ThermalRadiationandItsFluctuations. . . . . . . . . . . . . . . . . . . . 13 1. 7 TemperatureFluctuationsofSmallBodies. . . . . . . . . . . . . . . . . . 18 1. 7. 1 AbsorptionandEmissionFluctuations. . . . . . . . . . . . . . . 20 2 Signal NoiseRelations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2. 1 SignalLimitation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 2. 2 BackgroundLimitation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 2. 2. 1 IdealDetection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2. 3 JohnsonNoise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 2. 4 DarkCurrentNoise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 2. 5 NoiseandSensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 2. 6 Ampli?erNoiseandMismatching. . . . . . . . . . . . . . . . . . . . . . . . . . 28 3 ThermalDetectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 3. 1 ThermocoupleandThermopile. . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 3. 2 Bolometer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 3. 2. 1 MetallicBolometer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 3. 2. 2 Thermistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 3. 3 PyroelectricDetector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 4 VacuumPhotodetectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 4. 1 VacuumPhotodiode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 4. 2 Photomultiplier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 X Contents 5 SemiconductorPhotodetectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 5. 1 Photoconductors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 5. 1. 1 AnalysisoftheDetectionProcess. . . . . . . . . . . . . . . . . . . . 64 5. 1. 2 FrequencyResponse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 5. 2 Photodiodes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 5. 2. 1 P NJunction. . . . . . . . . . . . . . . . . . . . . .

Su questo libro

Informazioni sull?autore

W. J. Witteman has been professor in laser physics at the University of Twente (The Netherlands) from 1969 until 1999. Next to numerous articles in the field of CO2-lasers, excimer lasers and free electron lasers he has published:

In 1987 "The CO2 Laser" (Springer Series in Optical Sciences, Vol.54)

In 1996 as co-author "Gas Lasers-Recent Developments and Future Prospects" (Kluwer Academic Publishers)

In 2004 as co-author "Handbook of Laser Technology & Applications" (Institute of Physics Publishing). He was the author of the chapter on "Excimer, F2, N2 and H2 Lasers".

Dalla quarta di copertina

This comprehensive monograph deals with detectors, signal processors and related noise phenomena. Detailed quantitative analyses are developed in a consistent format for thermal detectors, vacuum detectors, semiconductor detectors and avalanche detectors, as well as their accompanying noise currents. For signal processing applocations, the monograph treats in detail the operational amplifier, signal averagers, waveform analyzers, correlation techniques and heterodyne detection. Several original extensions are reported, especially for correlation devices and heterodyne detection with noise rejection. In addition, results of analyses are illustrated with examples of operating systems and of applications in space communication and laser radar.

Dettagli dell'edizione

• Editore: Springer Verlag
• Data di pubblicazione: 2006
• Lingua: Inglese
• ISBN 10: 3540295992
• ISBN 13: 9783540295990
• Rilegatura: Copertina rigida
• Numero di pagine: 173
• Contatto del produttore: Springer-Verlag GmbH; customerservice@springernature.com; ; Tiergartenstraße 17; Heidelberg; Baden-Württemberg; 69121; Germania