Heterostructures for quantum-cascade lasers of the wavelength range of 7–8 μm


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Abstract

It is shown that molecular-beam-epitaxy technology can be used to fabricate heterostructures for quantum-cascade lasers of the wavelength range of 7–8 μm with an active region comprising 50 cascades based on a heterojunction of In0.53Ga0.47As/Al0.48In0.52As solid solutions. The optical emission is obtained using a quantum-cascade design operating on the principle of two-phonon resonance scattering. The properties of heterostructures were studied by the methods of X-ray diffraction and transmission electron microscopy, which showed their high quality with respect to the identical compositions and thicknesses of all 50 cascades. Stripe-geometry lasers made of these heterostructures exhibited lasing with a threshold current density below 1.6 kA/cm2 at a temperature of 78 K.

About the authors

V. N. Nevedomskii

Ioffe Physical Technical Institute

Email: anton.egorov@connector-optics.com
Russian Federation, St. Petersburg, 194021

A. S. Kurochkin

St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University)

Email: anton.egorov@connector-optics.com
Russian Federation, St. Petersburg, 197101

E. S. Kolodeznyi

St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University)

Email: anton.egorov@connector-optics.com
Russian Federation, St. Petersburg, 197101

G. S. Sokolovskii

Ioffe Physical Technical Institute

Email: anton.egorov@connector-optics.com
Russian Federation, St. Petersburg, 194021

V. E. Bugrov

St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University)

Email: anton.egorov@connector-optics.com
Russian Federation, St. Petersburg, 197101

L. Ya. Karachinsky

St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University); Connector Optics Company; Ioffe Physical Technical Institute

Email: anton.egorov@connector-optics.com
Russian Federation, St. Petersburg, 197101; St. Petersburg, 194292; St. Petersburg, 194021

I. I. Novikov

St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University); Connector Optics Company; Ioffe Physical Technical Institute

Email: anton.egorov@connector-optics.com
Russian Federation, St. Petersburg, 197101; St. Petersburg, 194292; St. Petersburg, 194021

A. Bousseksou

Centre for Nanoscience and Nanotechnology, CNRS UMR9001

Email: anton.egorov@connector-optics.com
France, Orsay

A. Yu. Egorov

St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University); Connector Optics Company

Author for correspondence.
Email: anton.egorov@connector-optics.com
Russian Federation, St. Petersburg, 197101; St. Petersburg, 194292

A. V. Babichev

St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University); Connector Optics Company

Email: anton.egorov@connector-optics.com
Russian Federation, St. Petersburg, 197101; St. Petersburg, 194292

A. G. Gladyshev

Connector Optics Company

Email: anton.egorov@connector-optics.com
Russian Federation, St. Petersburg, 194292

A. V. Filimonov

Connector Optics Company

Email: anton.egorov@connector-optics.com
Russian Federation, St. Petersburg, 194292

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