Av. Balakin et al., Amplification of the generation of the sum-frequency signal in multilayer periodic structures at the edges of the Bragg band gap, JETP LETTER, 70(11), 1999, pp. 725-729
A new property of a one-dimensional periodic structure - amplification of t
he sum-frequency signal arising under the simultaneous action of two laser
pulses on this structure with radiation frequencies corresponding to the ed
ges of the fixed Bragg band gap - is experimentally observed and described.
(C) 1999 American Institute of Physics. [S0021-3640(99)00323-0].