Study of Cu film surface treatment using formic acid vapor/solution for low temperature bonding

W Yang, Y Lu, C Zhou, J Zhang… - Journal of The …, 2017 - iopscience.iop.org
In this paper, the surface of Cu film was treated with formic acid vapor and solution for Cu
low temperature bonding. After formic acid vapor/solution treatment, Cu film surface oxide …

Optimization of MBE Growth Conditions of In0.52Al0.48As Waveguide Layers for InGaAs/InAlAs/InP Quantum Cascade Lasers

P Gutowski, I Sankowska, T Słupiński, D Pierścińska… - Materials, 2019 - mdpi.com
We investigate molecular beam epitaxy (MBE) growth conditions of micrometers-thick In0.
52Al0. 48As designed for waveguide of InGaAs/InAlAs/InP quantum cascade lasers. The …

A Polynomial Approximation to Self Consistent Solution for Schrödinger–Poisson Equations in Superlattice Structures

M Mączka, S Pawłowski - Energies, 2022 - mdpi.com
The paper deals with a new approach to iterative solving the Schrödinger and Poisson
equations in the first type of semiconductor superlattice. Assumptions of the transfer matrix …

Demonstration of Sub-THz Traveling-Wave Resonant-Tunneling-Diode Oscillators

Z Jéhn, M Feiginov - IEEE Transactions on Nanotechnology, 2023 - ieeexplore.ieee.org
As a proof of principle, operation of traveling-wave resonant-tunneling-diodes (RTDs)
oscillators has been demonstrated experimentally in the frequency range 100-400 GHz. A …

Above room temperature operation of InGaAs/AlGaAs/GaAs quantum cascade lasers

D Pierścińska, P Gutowski, G Hałdaś… - Semiconductor …, 2018 - iopscience.iop.org
In this work we report on the performance of mid-infrared quantum cascade lasers (QCLs)
based on strained InGaAs/AlGaAs grown by molecular beam epitaxy on GaAs substrate …

Adsorption and interface reaction in direct active bonding of GaAs to GaAs using Sn–Ag–Ti solder filler

LX Cheng, XJ Yue, J Xia, ZZ Wu, GY Li - Journal of Materials Science …, 2021 - Springer
The element diffusion behavior, the interfacial evolution and mechanical properties of the
joining of gallium arsenide (GaAs) with Sn3. 5Ag4Ti (Ce, Ga) alloy filler at 250° C in air were …

Efficient method for transport simulations in quantum cascade lasers

M Maczka, S Pawlowski - EPJ Web of Conferences, 2017 - epj-conferences.org
An efficient method for simulating quantum transport in quantum cascade lasers is
presented. The calculations are performed within a simple approximation inspired by …

[PDF][PDF] Calculations of transport parameters in semiconductor superlattices based on the Greens' functions method in different Hamiltonian representations

M Mączka, G Hałdaś - Bulletin of the Polish Academy of …, 2019 - bibliotekanauki.pl
Two methods for calculating transport parameters in semiconductor superlattices by
applying Green's functions are compared in the paper. For one of the methods, the Wannier …

Al0.45Ga0.55As-based single-mode distributed-feedback quantum-cascade lasers with surface gratings

A Szerling, R Kruszka, K Kosiel… - Journal of …, 2017 - spiedigitallibrary.org
Conditions of fabrication of first-order distributed-feedback surface gratings designed for
single-mode Al 0.45 Ga 0.55 As/GaAs quantum cascades lasers with the emission …

Optical polarization shift in beams emitted by quantum cascade lasers

E Pruszyńska-Karbownik, P Gutowski… - Optical and Quantum …, 2019 - Springer
In this paper, we present experimental results of current-induced polarization change and
transverse mode change in mid-infrared quantum cascade lasers. The polarization of laser …