Chin. Phys. Lett.  2008, Vol. 25 Issue (9): 3276-3279    DOI:
Original Articles |
Enhancement of Second- and Third-Order Nonlinear Optical Susceptibilities in Magnetized Semiconductors
M. Singh1, P. Aghamkar2,3, S. Duhan2
1Department of Applied Sciences, P.D.M. College of Engineering, Bahadurgarh-124507, India2Department of Applied Physics, G.J. University of Science and Technology, Hisar-125001, India3Department of Physics, Chaudhary Devi Lal University, Sirsa-125055, India
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M. Singh, P. Aghamkar, S. Duhan 2008 Chin. Phys. Lett. 25 3276-3279
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Abstract

Using electromagnetic treatment, an expression of effective nonlinear optical susceptibility χe e(2)e(3)E is obtained for III-V semiconducting crystals in an applied transverse dc magnetic field under off-resonant transition regime. The origin of nonlinear interaction lies in nonlinear polarization arising from the crystal properties such as piezoelectricity and electrostriction. Numerical estimates have been made by a representative n-InSb crystal at 77K duly irradiated by a pulsed 10.6-μm CO2 laser under off-resonant transition regime. Efforts are dedicated to optimizing doping level and externally applied dc magnetic field to achieve maximum χe(2) and χe(3). The results are found to be in good agreement with the available literature. The analysis shows that χe(2) and χe(3) can be significantly enhanced in doped III--V semiconductors by the proper selection of doping concentration and dc magnetic field, which confirms its potential as a candidate material for the fabrication of nonlinear optical devices.

Keywords: 42.65.-k      42.55.Ye      78.55.Cr     
Received: 10 December 2007      Published: 29 August 2008
PACS:  42.65.-k (Nonlinear optics)  
  42.55.Ye (Raman lasers)  
  78.55.Cr (III-V semiconductors)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2008/V25/I9/03276
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Articles by authors
M. Singh
P. Aghamkar
S. Duhan
[1] Banfi G, Degiorgio V and Ricard D 1998 Advances inPhys. 47 447
[2] Haug H and Koch S W 2004 Quantum Theory of theOptical and Electronic Properties of Semiconductors 4th edn(Singapore: World Scientific)
[3] Garmire E 2000 IEEE J. Quantum Electron. 61094
[4] Lutz G 1999 Semiconductor Radiation Detectors: DevicePhysics (Berlin: Springer)
[5] Fu Y and Willander M 1999 Physics Models ofSemiconductor Quantum Devices (Berlin: Springer)
[6] Singh M, Aghamkar P and Sen P K 2007 Chin. Phys.Lett. 24 2245
[7] Aggarwal G.S. 1973 Phys. Rev. A 7 1195
[8] Sen P K, Sen P and Vivek S 1996 J. Phys. D: Appl. Phys. 29 1
[9] Gupta P K and Sen P K 2001 Mol. Cryst. Liq. Cryst.Sci. Technol. Sect. B: Nonlinear Opt. 26 361
[10] Vonder-Linde D, Mair M and Kaiser W 1969 Phys. Rev. 178 11
[11] Flytzanis C 1970 Phys. Lett. 31A 273
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