RUS  ENG
Full version
JOURNALS // Fizika i Tekhnika Poluprovodnikov // Archive

Fizika i Tekhnika Poluprovodnikov, 2018 Volume 52, Issue 12, Pages 1491–1498 (Mi phts5666)

This article is cited in 5 papers

Semiconductor structures, low-dimensional systems, quantum phenomena

All-electric laser beam control based on a quantum-confined heterostructure with an integrated distributed Bragg grating

I. S. Shashkin, O. S. Soboleva, P. S. Gavrina, V. V. Zolotarev, S. O. Slipchenko, N. A. Pikhtin

Ioffe Institute, St. Petersburg

Abstract: The characteristics of semiconductor chip modulators providing the angular deflection of a laser beam due to all-electric modulation of the optical characteristics of a semiconductor heterostructure are theoretically studied. Designs for quantum-confined semiconductor waveguide heterostructures with a distributed Bragg reflector integrated on the heterostructure surface are developed. The design of a waveguide structure including 20 periods of coupled asymmetric quantum wells, which provide an optical confinement factor of the waveguide mode of 20%, and an optimized doping profile allowing a uniform electric-field distribution to be maintained in the quantum-well region in the entire range of operating voltages are proposed. In this waveguide structure, the change in the refractive index due to the quantum-confined Stark effect reaches 0.086 when the control signal changes from 0 to 6 V. It is shown that the spatial (angular) scanning of the laser beam emitted from the surface of a distributed Bragg mirror with a divergence of less than 0.1$^{\circ}$ in the range of 1$^{\circ}$–2$^{\circ}$ is feasible for the proposed waveguide structure design.

Keywords: Quantum Confinement Heterostructures, Optical Confinement Factor, Distributed Bragg Reflector (DBR), Waveguide Mode, Proposed Waveguide Structure.

Received: 14.05.2018
Accepted: 21.05.2018

DOI: 10.21883/FTP.2018.12.46763.8905


 English version:
Semiconductors, 2018, 52:12, 1595–1602

Bibliographic databases:


© Steklov Math. Inst. of RAS, 2024