A novel detector, incorporating e2v’s EMCCD (L3VisionTM) [1] technology for use in LIDAR (Light Detection And Ranging) applications has been designed, manufactured and characterised. The most critical performance aspect was the requirement to collect charge from a 120μm square detection area for a 667ns temporal sampling window, with low crosstalk between successive samples, followed by signal readout with sub-electron effective noise. Additional requirements included low dark signal, high quantum efficiency at the 355nm laser wavelength and the ability to handle bright laser echoes, without corruption of the much fainter useful signals. The detector architecture used high speed charge binning to combine signal from each sampling window into a single charge packet. This was then passed through a multiplication register (EMCCD) operating with a typical gain of 100X to a conventional charge detection circuit. The detector achieved a typical quantum efficiency of 80% and a total noise in darkness of < 0.5 electrons rms. Development of the detector was supported by ESA.
The size and the weight of state of the art spectrometers is a serious issue regarding space applications. SWIFTS (Stationary Wave Integrated Fourier Transform Spectrometer) is a new FTS family without any moving part. This very promising technology is an original way to fully sample the Fourier interferogram obtained in a waveguide by either a reflection (SWIFTS Lippmann) or counter-propagative (SWIFTS Gabor) interference phenomenon. The sampling is simultaneously performed the optical path thanks to "nano-detectors" located in the evanescent field of the waveguide. For instance a 1.7cm long waveguide properly associated to the detector achieves directly a resolution of 0.13cm-1 on a few centimetre long instruments. Here, firstly we present the development status of this new kind of spectrometers and the first results obtained with on going development of spectrometer covering simultaneously the visible domain from 400 to 1000 nm like an Echelle spectrometer. Valuable technologies allows one to extend the concept to various wavelength domains. Secondly, we present the results obtained in the frame of an activity funded by the European Space Agency where several potential applications in space missions have been identified and studied.
This work focus on an innovative noiseless charge transfer TDI pixel fabricated with a one poly standard Imaging CMOS technology. Parallel column charge to voltage conversion decreases drastically the number of needed charge transfers while keeping high motion/dynamic MTF (multi phase approach), high QE (photodiode based architecture) and low noise (no noise summation).
A novel detector, incorporating e2v’s L3 CCD (L3Vision™) [1] technology for use in LIDAR (Light Detection And Ranging) applications has been designed, manufactured and characterised. The most critical performance aspect was the requirement to collect charge from a 120μm square detection area for a 667ns temporal sampling window, with low crosstalk between successive samples, followed by signal readout with sub-electron effective noise. Additional requirements included low dark signal, high quantum efficiency at the 355nm laser wavelength and the ability to handle bright laser echoes, without corruption of the much fainter useful signals.
The detector architecture used high speed charge binning to combine signal from each sampling window into a single charge packet. This was then passed through a multiplication register (Electron Multiplying Charge Coupled Device) operating with a typical gain of 100X to a conventional charge detection circuit. The detector achieved a typical quantum efficiency of 80% and a total noise in darkness of < 0.5 electrons rms. Development of the detector was supported by ESA (European Space Agency).
This paper discusses postponement strategy applied to the Daphnis 10μm products family designed on purpose for postponement and for performing late-stage product completion as close to demands as possible. Regarding individual building blocks, DAPHNIS generic parts are created during the initial stages of the manufacturing process. In the later stages, these generic parts are customized to create the final product.
A novel detector, incorporating e2v's L3 CCD
(L3VisionTM) [1] technology for use in LIDAR (Light
Detection And Ranging) applications has been
designed, manufactured and characterised. The most
critical performance aspect was the requirement to
collect charge from a 120μm square detection area for a
667ns temporal sampling window, with low crosstalk
between successive samples, followed by signal readout
with sub-electron effective noise. Additional
requirements included low dark signal, high quantum
efficiency at the 355nm laser wavelength and the ability
to handle bright laser echoes, without corruption of the
much fainter useful signals.
The detector architecture used high speed charge
binning to combine signal from each sampling window
into a single charge packet. This was then passed
through a multiplication register (EMCCD) operating
with a typical gain of 100X to a conventional charge
detection circuit. The detector achieved a typical
quantum efficiency of 80% and a total noise in darkness
of < 0.5 electrons rms. Development of the detector was
supported by ESA.
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