The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information A waveguide made of LiNbO3 with a periodic linear corrugation on its surface is analyzed from the point of view of squeezed-light generation. It is shown that scattering of nonlinearly interacting optical fields caused by the corrugation improves efficiency of the nonlinear process under certain conditions. These conditions are found approximately analytically and confirmed numerically. The linear corrugation can be tuned both into the pump as well as second-subharmonic field in order to improve efficiency of the nonlinear process. The analysis provides a detailed understanding of the role of all parameters of the waveguide and this enables to specify optimum values of parameters to achieve the best values of squeezing. In pulsed regime the right choice of spectral modes is important to observe squeezing. These modes are found using the Bloch-Messiah reduction of the appropriate Green functions. 5a. CONTRACT NUMBER. Enter all contract numbers as they appear in the report, e.g. F33615-86-C-5169.
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SPONSOR/MONITOR'S REPORT NUMBER(S).Enter report number as assigned by the sponsoring/ monitoring agency, if available, e.g. BRL-TR-829; -215. Abstract Two-mode nonlinear interaction (second-harmonic and second-subharmonic generation) in a planar waveguide with a small periodic corrugation...