Research on the two dimensional performance model for low light level imaging systems

2007 ◽  
Author(s):  
Kecong Ai ◽  
Liwei Zhou
Keyword(s):  
Light Level ◽  
Performance Model ◽  
Imaging Systems ◽  
Two Dimensional ◽  
Low Light

A versatile, low light level optical detection system: from time-integrated emission spectra to time-resolved, two-dimensional emission mapping

1992 ◽  
Vol 70 (10-11) ◽  
pp. 1199-1204
Author(s):  
L. B. Allard ◽  
S. Charbonneau ◽  
Jeff F. Young
Keyword(s):  
Detection System ◽  
Optical Detection ◽  
Emission Spectra ◽  
Light Level ◽  
Photoluminescence Spectroscopy ◽  
Two Dimensional ◽  
Low Light ◽  
Time Resolved ◽  
Recombination Processes ◽  
Optical Detection System

We describe a novel, low light level optical detection system that can be easily configured for various modes of operation. These include (i) time-integrated photoluminescence spectroscopy, (ii) transient, spectrally gated photoluminescence decay, (iii) time-windowed photoluminescence spectroscopy, (iv) two-dimensional, time-integrated photoluminescence mapping, and (v) time-resolved, two-dimensional photoluminescence mapping with a time resolution of ~100 ps. This new detection system is described technically and examples are given of how it can be used to study a variety of different recombination processes in semiconductors.

Applications of the Optical Multichannel Analyzer for Low Light Level Signal Averaging and Two-Dimensional Mode Detection of Picosecond Laser-Generated Raman Spectra

1981 ◽  
Vol 35 (3) ◽  
pp. 281-289 ◽  
Author(s):  
J. L. Chao
Keyword(s):  
Picosecond Laser ◽  
Light Level ◽  
Light Signal ◽  
Two Dimensional ◽  
Signal Averaging ◽  
Low Light ◽  
Mode Detection ◽  
Multichannel Analyzer ◽  
Integration Techniques ◽  
Laser Experiments

Techniques developed for the use of a programmable optical multichannel analyzer are discussed. Two different signal-limited areas which are of general spectroscopic interest are the focus of the paper. The first area involves using extended delay target integration techniques for low level light signal averaging. The second application area describes techniques developed for capturing spectral information from pulsed laser experiments. Multiple tracks are shown in order to demonstrate the two-dimensional applications in spectroscopy. The paper also contains information about the design and operating principles of vidicon detectors and other imaging technologies are considered as well.

Application of polymer films based on bacteriorhodopsin and its analogs for low-light-level imaging systems

1995 ◽  
Author(s):  
Elena Y. Korchemskaya ◽  
Marat S. Soskin ◽  
Dmitriy A. Stepanchikov ◽  
T. V. Djukova ◽  
Anna B. Druzhko ◽  
...  
Keyword(s):  
Polymer Films ◽  
Light Level ◽  
Imaging Systems ◽  
Low Light

New performance model for low-light-level imaging system

2002 ◽  
Author(s):  
Kecong Ai ◽  
LiWei Zhou ◽  
Guilin Zeng ◽  
Yanxi Liang
Keyword(s):  
Imaging System ◽  
Light Level ◽  
Performance Model ◽  
Low Light

Role of spectral matching in optimization of the design of low-light-level imaging systems

1985 ◽  
Vol 24 (14) ◽  
pp. 2103
Author(s):  
Bhalchandra D. Bhawe ◽  
Jagdish C. Monga
Keyword(s):  
Light Level ◽  
Imaging Systems ◽  
Low Light ◽  
Spectral Matching

Software pattern recognition applied to nanodiffraction patterns from a STEM instrument

1986 ◽  
Vol 44 ◽  
pp. 694-695
Author(s):  
G.Y. Fan ◽  
J.M. Cowley
Keyword(s):  
Image Processing ◽  
Pattern Recognition ◽  
Computer Software ◽  
Processing System ◽  
Light Level ◽  
Host Computer ◽  
Low Light ◽  
Image Processing System ◽  
Recent Developments ◽  
On Line

In recent developments, the ASU HB5 has been modified so that the timing, positioning, and scanning of the finely focused electron probe can be entirely controlled by a host computer. This made the asynchronized handshake possible between the HB5 STEM and the image processing system which consists of host computer (PDP 11/34), DeAnza image processor (IP 5000) which is interfaced with a low-light level TV camera, array processor (AP 400) and various peripheral devices. This greatly facilitates the pattern recognition technique initiated by Monosmith and Cowley. Software called NANHB5 is under development which, instead of employing a set of photo-diodes to detect strong spots on a TV screen, uses various software techniques including on-line fast Fourier transform (FFT) to recognize patterns of greater complexity, taking advantage of the sophistication of our image processing system and the flexibility of computer software.

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