A simple blue light pulse generator with GaN/SiC light emitting diodes for the time response testing of PMTs | Zendy

P. Antoranz | Zendy; F. Lucarelli | Zendy; M. Asensio | Zendy; J. M. Miranda | Zendy; M. V. Fonseca | Zendy

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A simple blue light pulse generator with GaN/SiC light emitting diodes for the time response testing of PMTs

Author(s) -

P. Antoranz,

F. Lucarelli,

M. Asensio,

J. M. Miranda,

M. V. Fonseca

Publication year - 2005

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.607853

Subject(s) - pulse generator , optics , optoelectronics , materials science , pulse width modulation , parasitic extraction , pulse (music) , bandwidth limited pulse , laser , capacitance , electronic engineering , physics , jitter , ultrashort pulse , electrical engineering , voltage , engineering , detector , quantum mechanics , electrode

A simple and cost-effective integrated synthesizer of fast light pulses has been designed, analyzed and tested for the characterization of the time response of photo-multipliers (PMT). This synthesizer consists of an integrated pulse generator based on Schmidt Trigger Inverters, a broadband matching network and a high speed LED. It enables the generation of pulses as short as less than 10 ns with variable pulse width, amplitude and repetition frequency. In order to accurately know the shape of the pulses applied to the PMT under test, a circuital model of the LED has been developed and verified at frequencies up to 2 GHz. This model accounts for the nonlinear behavior of the LED capacitance as well as the package parasitics. The influence of the mismatch at the different frequency components of the synthesized pulse has been investigated. The pulse transmitter has been used to test the time response of MAGIC telescope pixels

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