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A multichannel detection system for application in ultra-fast spectroscopy

A multichannel photodetection system for the use in ultra-fast spectroscopy is presented. The system consists of pairs of photodiode-arrays combined with amplifier circuits and a gated analogue-to-digital converter. It allows real single-pulse analysis at repetition rates well above 1 kHz, gating in the submicrosecond regime and a sensitivity high enough to allow one to perform multichannel experiments at weak light energies.