BEAM PULSE COMPRISING METHOD

摘要

PURPOSE:To devise a beam pulse compressing method capable of compressing long pulse laser beams in low beam intensity into short pulse laser beams in high beam intensity using Raman induction scattering method. CONSTITUTION:The exciting beams 4 of short wavelength laser beams comprising continuous beams or long pulse laser beams in low beam intensity are initially implanted in induced Raman medium 3 inserted into beam resonators 1, 2 so as to excite this medium 3 by the excited beams 4 for reserving the beam energy as the primary Stokes energy. Next, the trigger pulse 5 by short pulse laser beams in the same wavelength as that of the excited beams 4 is implanted to emit the secondary stokes beams by four light wave mixture so that the primary stokes beams may be backward Raman compressed by the secondary stokes beams to be converted into the short pulse secondary stokes beams in high beam intensity further to be taken out as output beams 6.