"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Piezoelectric and electrostrictive contributions to optical parametric amplification of acoustic phonons in magnetized doped III-V semiconductors

JYOTI GAHLAWAT1, MANJEET SINGH2,* , UNITA DAHIYA1

Affiliation

  1. Department of Physics, Baba Mastnath University, AsthalBohar, Rohtak-124021, India
  2. Department of Physics, Government College, Matanhai,Jhajjar –124106, India

Abstract

In the present analytical investigation, we have explored the piezoelectric and electrostrictivecontributions tooptical parametric amplification of acoustic phonons in magnetized doped III-V semiconductors. Expressionsare obtained foreffective second-order optical susceptibilityand threshold pump electric field for the onset of optical parametric amplification process. Parametric gain coefficients are obtained for different cases, viz. piezoelectric coupling only,electrostrictive coupling only, and piezoelectric and electrostrictive coupling both;well above the threshold pump field. Numerical estimatesaremade forn-type InSb crystalkept in an external magnetostatic field andilluminated by a pulsed CO2laser. The results indicate that the threshold pump field for the onset of optical parametric amplification and parametric gain coefficients canbe tailored by monitoring thematerial parameters (such as carrier concentration, piezoelectric and/or electrostrictive coefficients), dispersion characteristicsandanexternal magnetostatic field. It isfound that proper selection of externally applied magnetostaticfield reduces threshold pump field and enhances gain profile of the optical parametric amplifier. The results strongly suggest the potential of n-InSb-CO2laser system for the fabrication of optical parametric amplifier..

Keywords

Optical parametric amplification, Piezoelectricity, Electrostriction, Acoustic phonons, III-V semiconductors.

Submitted at: Nov. 6, 2019
Accepted at: April 8, 2021

Citation

JYOTI GAHLAWAT, MANJEET SINGH, UNITA DAHIYA, Piezoelectric and electrostrictive contributions to optical parametric amplification of acoustic phonons in magnetized doped III-V semiconductors, Journal of Optoelectronics and Advanced Materials Vol. 23, Iss. 3-4, pp. 183-192 (2021)