Abstract
Picosecond acoustic pulses generated by femtosecond laser excitation of a metal film induce a transient current with subnanosecond rise time in a Schottky diode. The signal consists of components due to the strain pulse crossing the edge of the depletion layer in the GaAs and also the interface. A theoretical model is presented for the former and is shown to be in very good agreement with the experiment.
- Received 30 November 2010
DOI:https://doi.org/10.1103/PhysRevLett.106.066602
© 2011 American Physical Society