DATA FROM A.O. VARDANYAN ET AL PROVIDE NEW INSIGHTS INTO QUANTUM ELECTRONICS

Science Letter
April 21, 2009

According to a study from Yerevan, Armenia, "The results of a
theoretical study of the formation of a supercontinuum produced due to
the interaction of femtosecond laser pulses with an isotropic nonlinear
medium are presented. The system of nonlinear Maxwell’s equations
was numerically integrated in time by the finite-difference method."

"The interaction of mutually orthogonal linearly-polarised 1.98-mu m,
30-fs, 30-nJ pulses propagating along the normal to the < 110 > plane
in a I-mm-long GaAs crystal was considered. In the nonlinear part
of the polarisation medium, the inertialless second-order nonlinear
susceptibility was taken into account," wrote A.O. Vardanyan and
colleagues (see also Quantum Electronics).

The researchers concluded: "The formation process of a terahertz
pulse obtained due to the supercontinuum filtration was studied."

Vardanyan and colleagues published the results of their research
in Quantum Electronics (Generation of terahertz radiation upon
filtration of a supercontinuum produced during the propagation of
a femtosecond laser pulse in a GaAs crystal. Quantum Electronics,
2008;38(11):1070-1077).

For additional information, contact A.O. Vardanyan, Yerevan Science
Research Institute Optophys Measurements, Ul Ara Sarkisyana 5A,
Yerevan 375031, Armenia.

The publisher of the journal Quantum Electronics can be contacted at:
Turpion Ltd., Turpin Distribution Services, Blackhorse Rd., Letchworth
SG6 1HN, Herts, England.

From: Emil Lazarian | Ararat NewsPress