Measurement of very-high-speed photodetectors with picosecond InGaAsP film lasers

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Abstract
The impulse responses of very-high-speed photodiodes are determined using 5–15 ps pulses from optically pumped ultrashort-cavity film lasers operating between wavelengths of 1.15 μm and 1.54 μm. The measured response time (FWHM) for a back-illuminated InGaAs/InP punch-through PIN photodiode is 30 Ps.