Linear and nonlinear optical absorption in different graded quantum wells modulated by intense laser field

Ozturk E., Sokmen I.

SUPERLATTICES AND MICROSTRUCTURES, cilt.52, sa.5, ss.1010-1019, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 52 Sayı: 5
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.spmi.2012.07.020
  • Dergi Adı: SUPERLATTICES AND MICROSTRUCTURES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1010-1019
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

The laser field dependence of the linear and nonlinear intersubband optical absorption in different graded quantum wells (GQWs) is investigated in the effective mass approximation. Results obtained show that the position and the magnitude of the linear and total absorption coefficients depend on the laser parameter and the shape of GQW. The resonant peak of total absorption coefficient can be bleached at sufficiently high incident optical intensities. Such a dependence of the exciting optical intensity on the external field strengths in different GQWs can be very useful for several potential device applications. It should point out that by applying the laser field we can obtain a blue shift or a red shift in the intersubband optical transitions. (C) 2012 Elsevier Ltd. All rights reserved.