The preparation and properties of grown p-n homojunction In
0.53Ga
0.47As photodiodes for operation in the

m wavelength range are described. At a reverse bias of 20 V, these diodes exhibit generation-recombination limited dark current as low as

A, junction capacitance of 0.3 pF, and pulse response corresponding to a circuit-limited rise time of 60 ps and diffusion-limited full width (FWHM) of 140 ps.