Cross Phase Modulation Efficiency Enhancement in In0.8Ga0.2As/Al0.5Ga0.5As/AlAs0
Title:Cross Phase Modulation Efficiency Enhancement in In0.8Ga0.2As/Al0.5Ga0.5As/AlAs0.56Sb0.44 Coupled Double Quantum Wells by Tailoring Interband Transition Wavelength
Authors:; ; ; ; ;
Affiliation:AA(National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 205-8568, Japan), AB(National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 205-8568, Japan), AC(National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 205-8568, Japan), AD(National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 205-8568, Japan), AE(National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 205-8568, Japan), AF(National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 205-8568, Japan)
Publication:Applied Physics Express, Volume 2, Issue 4, article id. 09).
Publication Date:04/2009
Bibliographic Code:
The cross-phase modulation (XPM) efficiency in new coupled double
quantum wells (CDQWs) was examined. Since the XPM efficiency was
enhanced under the resonant condition of interband transition (IBT), the
new CDQWs were designed to control the IBT absorption edge wavelength
(IBT-EW) while the intersubband transition (ISBT) wavelength was
maintained at around the optical communication wavelength. By
controlling the coupling strength between two wells and the bandgap
energy of the wells, the new CDQWs can have a possibility of individual
control of the IBT and ISBT wavelengths. In the new CDQWs, a high XPM
efficiency close to 0.5 rad/pJ this value was three times
higher than that observed in previous studies.
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arXiv e-printsAll-optical time-domain multiplexing-demultiplexing scheme with nonlinear material | (2005) | Chowdhury | Publications | Spie
Optical Engineering
Author(s): ; Partha Pratima D Sourangshu
Mukhopadhyay
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Paper Abstract
Optics is a candidate for digital communication and data processing where tremendous operational speed is the basic requirement. Conventional electronic systems cannot compete in this arena. Nonlinear optical materials may find important uses in optical switches. In this paper, a new idea for all-optical time-domain multiplexing and demultiplexing with the massive use of nonlinear optical materials is reported. The scheme exploits some special characteristics of such materials.
Paper Details
Date Published: 1 March 2005PDF: 5 pagesOpt. Eng. 44(3) 035201 doi:
Published in: Optical Engineering Volume 44, Issue 3Show Author Affiliations, Vidyasagar Univ. (India)Partha Pratima Das, Vidyasagar Univ. (India)Sourangshu
Mukhopadhyay, Vidyasagar Univ. (India)Ion beam guiding with straight and curved Teflon tubes: Ingenta Connect
Volume 44,&Number 35
Authors: Kojima, Takao M;&Ikeda, T&Kanai, Y&Yamazaki, Y&Esaulov, Vladimir A
Source: , Volume 44,&Number 35, 7 September 2011, pp. 205(5)Publisher:
In an effort to develop a flexible ion beam guiding scheme, the guiding capabilities of straight and curved Teflon tubes were tested with 8 keV Ar8+ ions. The tubes used were about 50 mm long and of 1 mm/2 mm inner and outer diameters. One was straight, and the others were
bent with different radii of curvature corresponding to bending angles from 9.6° to 26.7°. Transmission of several tens of per cent of the injected beam was observed for the curved tubes, while transmission through the tilted straight tube vanished when the tilt was more than 7°.
This demonstrates the possibility of efficient ion beam guiding with flexible insulator tubes.
iop/jphysd/4//art355201
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