Optical Detectors for Spectroscopy

Timothy, J. G.

doi:10.1086/131258

Cited by 40 publications

(19 citation statements)

References 42 publications

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“…Although the PAPA camera can work at higher photon rate, it has field uniformity problems (due to the limited precision of the mask reimaging), as described by Lawson (1994). Wedge-andStrip cameras are also affected by pulse pile-up, and by external magnetic deflection, requiring careful shielding (Timothy 1983).…”

Section: Alsomentioning

confidence: 99%

The DELTA photon counting camera concept

Morel

Koechlin

1998

Astron. Astrophys. Suppl. Ser.

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Abstract. In this paper we present new ideas for a high sensitivity array detector, which yields the space and time coordinates of photo-events at sustained count rates superior to one million per second. The DELTA camera (Detector Enhancement by Linear-projections on Three Axes) has been initially designed for astronomy. However, it has advantages for a wide range of high-resolution problems in the visible and near I.R. It is noticeable for its optical design, its smooth flat field and its very high temporal resolution and throughput in photon counting mode. The resolution of the prototype described is 512 × 591 pixels in space and 2.6 µs in time. The principle of this detector is based on a projection -back-projection scheme (the ∆-process) and on the use of three one-dimensional CCDs. We describe the technical solutions which could lead to an operational prototype. From numerical simulations of the ∆-process, we give some expected characteristics of this camera.

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Section: Alsomentioning

confidence: 99%

The DELTA photon counting camera concept

Morel

Koechlin

1998

Astron. Astrophys. Suppl. Ser.

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“…The following principles were followed in the design and implementation of LIPS : (1) The actual R&D at Laval was kept to a minimum, so as to concentrate in the integration of the system, the development of interfaces between components and the software environment. (2) The data Acquisition Module (DAM), comprising the computer and the display system was designed as a self -contained unit, independent of the detector head to facilitate the replacement of detectors as technology evolves.…”

Section: Design Philosophymentioning

confidence: 99%

“…-Depending on the adopted image characteristics the physical initial memory address can be specified or, if needed, changed sequentially to split the memory into different "planes" as in the case of multi-filter or Fabry-Perot observations. There are seven sections containing respectively the following type of information : (1). Object, telescope and DMA parameters.…”

Section: Design Philosophymentioning

confidence: 99%

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LIPS : The Laval University Image Photon-Counting System

et al. 1986

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We describe the implementation of a panoramic photon -counting detector system of the Ranicon (resistive anode) type which is in operation at Mont Mégantic Observatory.Particular emphasis is placed upon the modularity and flexibility of the system and the richness of its software environment.Spectroscopic applications now in course at Mégantic are briefly described and some of the instrumental applications in preparation are mentioned. AbstractWe describe the implementation of a panoramic photon-counting detector system of the Ranicon (resistive anode) type which is in operation at Mont Megantic Observatory. Particular emphasis is placed upon the modularity and flexibility of the system and the richness of its software environment. Spectroscopic applications now in course at Megantic are briefly described and some of the instrumental applications in preparation are mentioned.

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“…For optical imaging, a common approach [29–32] is to use a microchannel plate or other image intensifier so that a single optical photon on the detector input can produce many secondary electrons on the intensifier output. The secondary electrons are then converted to electrical output signals by an array of electrodes or by an output phosphor and an array of photodetectors.…”

Section: Introductionmentioning

confidence: 99%

Objective assessment of image quality V Photon-counting detectors and list-mode data

Caucci

Barrett

2012

J. Opt. Soc. Am. A

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A theoretical framework for detection or discrimination tasks with list-mode data is developed. The object and imaging system are rigorously modeled via three random mechanisms: randomness of the object being imaged, randomness in the attribute vectors, and, finally, randomness in the attribute vector estimates due to noise in the detector outputs. By considering the list-mode data themselves, the theory developed in this paper yields a manageable expression for the likelihood of the list-mode data given the object being imaged. This, in turn, leads to an expression for the optimal Bayesian discriminant. Figures of merit for detection tasks via the ideal and optimal linear observers are derived. A concrete example discusses detection performance of the optimal linear observer for the case of a known signal buried in a random lumpy background.

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Optical Detectors for Spectroscopy

Cited by 40 publications

References 42 publications

The DELTA photon counting camera concept

The DELTA photon counting camera concept

LIPS : The Laval University Image Photon-Counting System

Objective assessment of image quality V Photon-counting detectors and list-mode data

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