High temporal resolution coordinate-sensitive detector with gallium-arsenide photocathode

Debur, V.; Beskin, G.; Карпов, С.; Plokhotnichenko, V. L.; Терехов, А. С.; Kosolobov, S. S.; Shaibler, G. É.

doi:10.1134/s1990341309040087

Cited by 6 publications

(2 citation statements)

References 7 publications

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“…The "Quantochron 4-480" spectal time-code convertor with 30 ns time resolution and 10 6 counts/s maximal count rate is used as an acquisition system. This equipment allows us to study 20-22 m objects for 1-hour exposure (under good weather conditions) with microsecond temporal resolution [20,21].…”

Section: The Search For Isolated Stellar Mass Black Holes In the Opti...mentioning

confidence: 99%

Search for Isolated Black Holes: Past, Present, Future

2014

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The critical property of a black hole is the presence of an event horizon. It may be detected only by means of a detailed study of the emission features of its surroundings. The temporal resolution of such observations has to be comparable to rg /c, which is in the 10−6–10 s range, depending on the mass of the black hole. At SAO RAS we have developed the MANIA hardware and software complex, based on the panoramic photon counter, and we use it in observations on the 6m telescope for searching and investigating the optical variability of various astronomical objects on time scales of 10−6–103 s. We present here the hardware and methods used for these photometric, spectroscopic and polarimetric observations, together with the principles and criteria for object selection. The list of objects includes objects with featureless optical spectra (DC white dwarfs, blazars) and long microlensing events.

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Section: The Search For Isolated Stellar Mass Black Holes In the Opti...mentioning

confidence: 99%

Search for Isolated Black Holes: Past, Present, Future

2014

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“…When projecting an image on the screen by raster scanning the laser beam, the human visual system cannot discern the individual beam spots because its temporal resolution of recognition is no faster than 100 ms, while the image frame is refreshed in every 17 ms (60 frame per second, fps). The coordinate sensitive detectors, on the other hand, usually have time resolution in the order of a few µs, therefore it is theoretically possible to resolve more than thousands of pixels as a probe lights to perform multi-probe triangular LRF measurement while presenting images [6].…”

Section: Introductionmentioning

confidence: 99%

A MEMS-based interactive laser scanning display with a collocated laser range finder

Jeon

Fujita

Toshiyoshi

2015

IEICE Electron. Express

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This paper presents an interactive laser scanning display (LSD) based on a microelectromechanical systems (MEMS) optical scanner that projects full-color images of lateral 720 pixels by two-dimensionally scanning a collimated laser beam. The scanner optics is also designed to function as a laser range finder (LRF) to measure the distance to the screen or an inserted object within arm's reach of 20 cm to 60 cm. The combination of LSD and LRF constructs an interactive image display that could be remotecontrolled by the viewer's hand gestures.

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p-GaAs(Cs,O)-photocathodes: Demarcation of domains of validity for practical models of the activation layer

Bakin

Toropetsky

Scheibler

et al. 2015

Applied Physics Letters

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The (Cs,O)-activation procedure for p-GaAs(Cs,O)-photocathodes was studied with the aim of demarcating the domains of validity for the two practical models of the (Cs,O)-activation layer: The dipole layer (DL) model and the heterojunction (HJ) model. To do this, the photocathode was activated far beyond the normal maximum of quantum efficiency, and several photocathode parameters were measured periodically during this process. In doing so, the data obtained enabled us to determine the domains of validity for the DL- and HJ-models, to define more precisely the characteristic parameters of the photocathode within both of these domains and thus to reveal the peculiarities of the influence of the (Cs,O)-layer on the photoelectron escape probability.

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High temporal resolution coordinate-sensitive detector with gallium-arsenide photocathode

Cited by 6 publications

References 7 publications

Search for Isolated Black Holes: Past, Present, Future

Search for Isolated Black Holes: Past, Present, Future

A MEMS-based interactive laser scanning display with a collocated laser range finder

p-GaAs(Cs,O)-photocathodes: Demarcation of domains of validity for practical models of the activation layer

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