High Gain InAs e-APDS with Excess Noise Factors Approaching a Solid State Photo-Multiplier презентация

Multispectral and hyperspectral imaging with QDIPs Night vision and surveillance Chemical/material identification Atmospheric monitoring Medical imaging www.ipac.caltech.edu www.ipac.caltech.edu © The University of Sheffield

Слайд 1High Gain InAs e-APDS with Excess Noise Factors Approaching a Solid

State Photo-Multiplier

APDs can improve receiver sensitivity by providing signal amplification in the detecting photodiode
e-APDs provide amplification with minimal noise
Benefiting applications with fewer photons
Active or 3D imaging (short integration times)
Hyperspectral imaging (spread spectrum)
Range finding
C02 monitoring
Photon counting
Other benefits
Use lower power sources for active imaging
Use smaller optics collecting less light

Baker et al. SPIE Vol. 6940

© The University of Sheffield


Слайд 2
Multispectral and hyperspectral imaging with QDIPs
Night vision and surveillance

Chemical/material
identification

Atmospheric monitoring

Medical

imaging

www.ipac.caltech.edu

www.ipac.caltech.edu

© The University of Sheffield


Слайд 3Why Algorithmic spectrometer?
QDIPs are 2 terminal devices.
Can be dynamically configured

into

Multispectral : Full FPA

Future Intelligent
Sensors?

High resolution
multicolour FPA

No moving parts

No cooled optical filters needed

© The University of Sheffield


Слайд 4Conclusion & Questions
EEE team develop new theories,proof of concepts of novel

material and sensing techniques with typical conclusions such as
Low strain QDIPs with between 30 and 80 stacks have been grown, dark current results show no strain effects

QDIPs can be used with algorithmic spectrometer to image filters in the LWIR and MWIR regions – promising for material classification such as polyurethane e.t.c.

Is this enough or can we do more?

© The University of Sheffield


Слайд 5© The University of Sheffield
Contact Details: Department of Electronic &

Electrical Engineering University of Sheffield Sir Frederick Mappin Building Mappin Street Sheffield S1 3JD, U.K. Tel:44-(0)114-2225185 Fax:44-(0)114-2225143 Email: c.h.tan@sheffield.ac.uk j.s.ng@sheffield.ac.uk j.p.david@sheffield.ac.uk

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