||The material research
within MIRSURG will focus only on nonlinear optical crystals. OP-GaAs
provides a unique opportunity to develop new mid-IR OPO devices based
on a material developed in Europe. This effort relies on a technology
which is at present also pursued by other leading groups in the world.
As such, OP-GaAs will play the major role in the material research
within MIRSURG. On the other hand, periodically poled oxide materials
of the KTP family, with specially designed properties, are interesting
for the first stage of the cascaded schemes. The growth and characterization
of this family of crystals will also be a part of the material studies
in the project. These efforts will be complemented with the characterization
and evaluation of several more rarely used wide band-gap semiconductors
(obtained from external cooperation) to be used in the OPO schemes
for direct conversion from the 1 µm to 6.45 µm.