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<strong>External electric field effect on the nonlinear optical properties of a laser dressed donor impurity in a GaAs spherical quantum dot confined at the center of a Ga1-xAlxAs cylindrical nano-wire</strong>
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| Authentication Code |
dc |
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| Title Statement |
<strong>External electric field effect on the nonlinear optical properties of a laser dressed donor impurity in a GaAs spherical quantum dot confined at the center of a Ga1-xAlxAs cylindrical nano-wire</strong> |
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| Added Entry - Uncontrolled Name |
Safarpour, Ghasem ; Young Researchers and Elite Club, Shiraz Branch, Islamic Azad University, Shiraz, Iran Izadi, Mohammad Amin ; Young Researchers and Elite Club, Zarghan Branch, Islamic Azad University, Zarghan, Iran Novzari, Mahmoud ; Young Researchers and Elite Club, Zarghan Branch, Islamic Azad University, Zarghan, Iran Niknam, Elahe ; Young Researchers and Elite Club, Zarghan Branch, Islamic Azad University, Zarghan, Iran |
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| Uncontrolled Index Term |
Nonlinear optics; Laser dressed donor impurity; External electric field; Spherical quantum dot; Nano-wire |
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| Summary, etc. |
<strong>Linear and third order nonlinear optical absorption coefficients and refractive index changes of an on-center donor impurity in a spherical GaAs quantum dot which is located at the center of a cylindrical Ga<sub>1</sub><sub>-x</sub>Al<sub>x</sub>As nano-wire, have been investigated under the simultaneous effect of electric field and laser radiation. The linear and third order nonlinear optical properties are calculated based on optical 1-2, 2-3 and 1-3 transitions by means of the compact density-matrix approach. The energy eigenvalues and corresponding wave functions are calculated using finite difference approximation and reliability of calculated wave functions is checked by computing orthogonality. It is shown that optical spectrum shifts towards lower and higher energies for 1-2 transition and shifts towards lower energies for 2-3 and 1-3 transitions as the electric field strength increases. The presence of laser field shifts absorption spectrum towards lower energies. In the absence of electric and laser field, the magnitude of absorption coefficient and refractive index changes increase in transitions between higher levels. Simultaneous presence of both electric field and laser radiation has great effect on magnitude of absorption coefficients and refractive index changes. The saturation in optical spectrum can be adjusted by electric field and laser radiation.</strong> |
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| Publication, Distribution, Etc. |
Indian Journal of Pure & Applied Physics (IJPAP) 2015-05-01 11:23:24 |
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| Electronic Location and Access |
application/pdf http://op.niscair.res.in/index.php/IJPAP/article/view/4697 |
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| Data Source Entry |
Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 53, ##issue.no## 4 (2015): Indian Journal of Pure & Applied Physics |
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| Language Note |
en |
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| Nonspecific Relationship Entry |
http://op.niscair.res.in/index.php/IJPAP/article/download/4697/10268 http://op.niscair.res.in/index.php/IJPAP/article/download/4697/10269 http://op.niscair.res.in/index.php/IJPAP/article/download/4697/10270 http://op.niscair.res.in/index.php/IJPAP/article/download/4697/10272 http://op.niscair.res.in/index.php/IJPAP/article/download/4697/10273 http://op.niscair.res.in/index.php/IJPAP/article/download/4697/10274 |
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Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India © 2015. The Council of Scientific & Industrial Research, New Delhi. |
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