Restoration of high spatial frequency at the image formed by stimulated Brillouin scattering with a prepulse

Du Hyun Beak; Jin Woo Yoon; Jae Sung Shin; Hong Jin Kong
December 2008
Applied Physics Letters;12/8/2008, Vol. 93 Issue 23, p231113
Academic Journal
We have found experimentally that it is possible to restore the high spatial frequency of optical images by using stimulated Brillouin scattering (SBS) with a prepulse. The Stokes wave usually has to lose the high spatial frequency because of the necessary energy to generate the acoustic grating. However, this problem has been resolved by using a prepulse method. We have achieved an amplitude increase of ∼41% compared to the normal SBS scheme at a spatial frequency of ∼0.027 mm-1. This method is easy to apply to a system using the optical image by the SBS process.


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