A resonant-cavity avalanche photodiode using a GaNAs absorption region grow
n on GaAs has been demonstrated. The peak quantum efficiency was 59% at 1.0
64 mu m with a full width at half maximum of 11 nm. The absorption coeffici
ent was determined to be alpha = 9 x 10(3)/cm at this wavelength. The devic
es exhibited gain up to 100 at a low breakdown voltage of 13 V. (C) 2000 Am
erican Institute of Physics. [S0003-6951(00)05236-0].