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Showing 2 results for Tajalli
Birefringence Properties and Surface Relief Grating Formation on Methylacrylate Polymers with Photochromic Side Chains
S. Ahmadi-Kandjani, P. Tajalli, H. Khoshsima, R. Barille, J. M. Nunzi, P. Kucharski, H. Tajalli,
Volume 4, Issue 1 (International Journal of Optics and Photonics (IJOP) Vol. 4, No. 1, Winter-Spring 2010)
Abstract
We have studied light-induced birefringence (LIB) and surface relief grating (SRG) formation in the series of methylacrylate polymers. The effect of material structure such as length of photochromic side chain, glass transition temperature and molecular structure of azo units on LIB and SRG are studied. The optical formation of self-induced SRG on films of these materials is also presented.
Voltage-Controlled Entanglement between Quantum- Dot Molecule and its Spontaneous Emission Fields via Quantum Entropy
M. Sahrai, H. Noshad, H. Tajalli, B. Arzhang,
Volume 5, Issue 2 (International Journal of Optics and Photonics (IJOP) Vol 5, No 2, Summer-Fall 2011)
Abstract
The time evolution of the quantum entropy in a coherently driven threelevel quantum dot (QD) molecule is investigated. The entanglement of quantum dot molecule and its spontaneous emission field is coherently controlled by the gat voltage and the intensity of applied field. It is shown that the degree of entanglement between a three-level quantum dot molecule and its spontaneous emission fields can be decreased by increasing the tunneling parameter.
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