Resonant cavity photodetectors at 1.53mum are demonstrated using the e
pitaxial liftoff technique to position an epilayer structure between t
wo metallic mirrors. The epilayer consists of a pin structure with qua
ntum wells placed strategically at the antinodes of the fabricated cav
ity. The quality factor of the 1.16mum long cavity is 59 corresponding
to mirror reflectivies of 94 and 90%.