title: A photomicrodynamic system with a mechanical resonator monolithically integrated with laser diodes on gallium arsenide.
abstract: A cantilever resonant microbeam, laser diodes, and a photodiode have been fabricated on the surface of a gallium arsenide substrate. The microbeam is excited photothermally by light from a laser diode. The vibration is detected with a photodiode as the variation in light output caused by the difference in optical length between the microbeam and another laser diode. A high carrier-to-noise ratio (45 decibels) is achieved with a short (3 micrometers) external cavity length. Such a small distance allows a lensless system, which increases the ease of fabrication. This work could lead to applications in which photomicrodynamic systems are monolithically integrated on a gallium arsenide substrate with surface micromachining technology.
authors.forename: H
authors.initials: H
authors.lastname: Ukita
authors.forename: Y
authors.initials: Y
authors.lastname: Uenishi
authors.forename: H
authors.initials: H
authors.lastname: Tanaka