Intensified diode arrays

Detector PAR OMA-III System with Model 1420 intensified diode array detector... 

Recent advances in solid state detectors have led to more efficient laser Raman spectrometers. These spectrometers are based on multichannel detectors (MCD) and are at least an order of magnitude faster than the systems based on PMT detector. However, at present these systems do not match the resolution capabilities of the scanning systems. The Spex Triplemate 1877 A is a new generation instrument which can be fitted with an intensified diode array consisting of 1024 elements. Figure 4.6.3 shows spectra obtained with these two types of detectors. 

Figure 1. The effect of near field stray radiation on the spectral line profile (546-nm Hg emission line). The detector was a microchannel-plate image intensified diode array (Reticon model RL-5I2SF, Princeton Instruments, Inc. model IRY-512). Key a, full line profile b, upper half (FWHM)ofline andc, lower portion of line, 0-10% relative emission...

Luminescence Measurements with an Intensified Diode Array... 

In the past, molecular luminescence spectrometry was always conducted with single channel systems involving a photomultiplier tube (PMT) as the detector. The availability of multichannel detectors with internal gain has provided a new powerful tool for luminescence measurements, and several types of applications have been reported (1-15). This paper is concerned with the application of an intensified diode array dynamic molecular fluorescence and chemiluminescence measurements. In this paper the types of measurements and analytical systems for which multichannel detectors are used in our laboratory are introduced. Next the specific IDA system used is presented along with important hardware and software considerations. Third, the characteristics of the IDA detector are reviewed to give some perspective about its influence on the quality of measurements. Finally, some typical applications to chemical systems are presented to illustrate the advantages of multichannel detection. 

Carson, S., Cohen, A.S., Belenku, A., Ruiz-Martinez, M.C., Berka, J., and Karger, B.L., DNA sequencing by capillary electrophoresis Use of a two-laser-two-window intensified diode array detection system, AnaZ. Chem., 65, 3219,1993. 

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