Antoranz Canales, PedroMiranda Pantoja, José MiguelFonseca González, María Victoria2023-06-202023-06-2020050-8194-5835-X10.1117/12.607853https://hdl.handle.net/20.500.14352/53339Conference on Photonic Materials, Devices and Applications (2005. Sevilla). © (2005) COPYRIGHT SPIE--The International Society for Optical Engineering.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.engbook parthttp://dx.doi.org/10.1117/12.607853http://proceedings.spiedigitallibrary.orgopen access537539.1High QEPhotomultiplier.ElectricidadElectrónica (Física)Física nuclear2202.03 Electricidad2207 Física Atómica y Nuclear