Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(Color online) (a) Experimentally measured amplitude of the PA signal as a function of the output energy of a stimulated Raman amplifier. 1 mV corresponds to about 3 kPa pressure. Blue dashed line is shown to provide a guide to the eye. (b) Experimentally recorded PA wave fronts for low energy excitation (upper black curve) and for high energy excitation (lower red curve). The threshold incident energy was found to be around 0.3 mJ.
