NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.45 [2007] >
IJPAP Vol.45(06) [June 2007] >


Title: Effect of doping on stimulated Brillouin scattering in piezoelectric magnetized III-V semiconductors
Authors: Singh, Manjeet
Aghamkar, Praveen
Sen, P K
Keywords: Stimulated Brillouin scattering
Doping
Piezoelectricity
Magnetic field
III-V semiconductors
Issue Date: Jun-2007
Publisher: CSIR
IPC CodeG02F1/35
Abstract: Using the hydrodynamic model of a semiconductor-plasma and following the coupled mode approach, an analytical investigation has been made for stimulated Brillouin scattering (SBS) resulting from the nonlinear interaction of an intense pump beam with acoustic perturbations internally generated due to piezoelectric and electrostrictive property of the crystal. The analysis deals with the qualitative behaviour of threshold pump electric field for the onset of SBS and resulting gain coefficient with respect to doping concentration (through plasma frequency) in piezoelectric III-V semiconductors subjected to transverse magnetostatic field. The numerical estimates are made for n-type InSb crystal at 77 K duly shined by pulsed 10.6 μm CO₂ laser. The threshold value of pump field required for the onset of SBS is found to lower in the presence of magnetostatic field. At resonance, the Brillouin gain is two hundred and 10⁴ times in the presence of piezoelectricity and magnetostatic field, respectively, than in their absence. Moreover, the SBS gain coefficient increases with increasing in scattering angle and results in maximum value for the backscattered mode. The backward Brillouin gain is found to be 10⁴ times larger than the forward gain. The analysis also suggests the possibility of observing phase conjugation reflectivity as high as ~10⁶ in weakly piezoelectric doped III-V semiconductors subjected to a magnetic field.
Page(s): 517-523
ISSN: 0019-5596
Source:IJPAP Vol.45(06) [June 2007]

Files in This Item:

File Description SizeFormat
IJPAP 45(6) 517-523.pdf127.55 kBAdobe PDFView/Open
 Current Page Visits: 460 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 511395 since 06-Feb-2009  Last updated on 11-Apr-2014Webmaster: nopr@niscair.res.in