INVESTIGATION THE DIRECT CURRENT MODULATION IN NANO QUANTUM CASCADE LASERS

  • Hussein Hadi Waried Department of physics /College of science / University of Thi-Qar, Iraq.
  • Methag Abdalwahed Kadem Department of physics /College of science / University of Thi-Qar, Iraq.

Abstract

In this paper, a theoretical investigation of direct current modulation in Nano quantum cascade lasers is presented. Since the spontaneous emission effect is an important factor in a microcavity the rate equations model has been reconsidered to include the Purcell spontaneous emission enhancement factor F and the spontaneous emission factor. The results indicate that the present rate equation model can be using to study the effect of Purcell spontaneous emission enhancement factor F and the spontaneous emission factor on the direct current modulation in Nano quantum cascade lasers. The results indicate that the effects of Purcell spontaneous emission enhancement factor F and the spontaneous emission factor are very similar to the effects of these factors in traditional semiconductor lasers. It is found that the increase in Purcell factor value leads to increase in photon number and decrease the carrier number in all quantum states. The decreases in enhanced spontaneous emission factor value leads to increases in carrier number and decreases the photon number in all quantum states. This results coming in good agreement with other references.

References

J. Ohtsubo, Semiconductor Lasers Stability, Instability and Chaos, third ed., Springer-Verlag Berlin Heidelberg, 2013.

D.M. and K.A.S. Kane, UNLOCKING DYNAMICAL DIVERSITY OPTICAL FEEDBACK EFFECTS, first ed., John Wiley & Sons Ltd West Sussex, 2005.

N. Yu, L. Diehl, F. Capasso, A. Belyanin, A.K. Wo, Self-Synchronization of Laser Modes and Multistability in Quantum Cascade Lasers, 133902 (2011) 1–4. doi:10.1103/PhysRevLett.106.133902.

H. Waried, Synchronization of Quantum Cascade Lasers with Negative Optoelectronic Feedback, Recent Adv. Electr. Electron. Eng. (Formerly Recent Patents Electr. Electron. Eng. 11 (2018) 167–175. doi:10.2174/2352096510666171108141701.

Synchronization of quantum cascade lasers with mutual optoelectronic coupling, Chinese J. Phys. 56 (2018) 1113–1120.

Chaos Synchronization of Coupled Nano Quantum Cascade Lasers with Negative Optoelectronic Feedback, Eur. Phys. J. D. In press (2019).

Controlling the Synchronization of Quantum Cascade Lasers with Negative Optoelectronic Feedback by Direct Current Modulation, Iran. J. Sci. Technol. Trans. A Sci. In press (2019).

Published
2021-02-17
Section
Articles