Waveform preservation of the backscattered stimulated Brillouin scattering wave by using a prepulse injection.
We have found that it is possible to preserve the temporal waveform of the reflected wave generated from stimulated Brillouin scattering (SBS) by using a prepulse technique. The waveform of the SBS wave usually shows a steep rising edge in the ordinary SBS process. It has been found that the waveform of the reflected wave depends on both the prepulse energy and the time delay between the main pulse and the prepulses. A prepulse energy of 5 mJ and a time delay of 5 ns have been measured to be the optimum values under the experimental conditions. This prepulse method is useful in developing a multistage system employing several SBS cells in series for high-power laser applications.
Kong
Hong Jin
HJ
Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea.
Du Beak
Hyun
H
Lee
Dong Won
DW
Lee
Seong Ku
SK