Calculation of gain and luminescence spectra of quantum-cascade laser structures taking into account asymmetric emission line broadening

Ушаков, Д. В.; Кононенко, В. К.; Манак, И. С.

doi:10.1070/qe2010v040n03abeh014185

Cited by 5 publications

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The gain spectrum was determined similarly to Refs. [13] and [14] taking into account the contribution of non-resonant transitions [11]. The many-particle effects of electron-electron interaction were taken into account as in Ref.…”

Section: The Theoretical Model Of Thz Qclmentioning

confidence: 99%

The operation of THz quantum cascade laser in the region of negative differential resistance

Хабибуллин¹,

Shchavruk²,

Пономарев³

et al. 2019

Opto-Electronics Review

View full text Add to dashboard Cite

We investigate the light-current-voltage characteristics and emission spectra of 2.3 THz quantum cascade laser operating in the negative differential resistance (NDR) region. It was shown that the formation of electric field domains (EFDs) leads to a large number of discontinuities on the current-voltage and the total optical power on current characteristics. Measurements of emission spectra at different current (before the NDR region and in the NDR region) shows that the formation of EFDs results in decrease of the output intensity, but does not influence on Fabry-Perot multi-mode structure of THz QCL. The developed theoretical model predicts the formation of EFDs in the NDR region and qualitatively explain the experimental results.

show abstract

Section: The Theoretical Model Of Thz Qclmentioning

confidence: 99%

The operation of THz quantum cascade laser in the region of negative differential resistance

Хабибуллин¹,

Shchavruk²,

Пономарев³

et al. 2019

Opto-Electronics Review

View full text Add to dashboard Cite

show abstract

“…The shortwavelength edge of the emission spectrum decays exponentially. The experimental spectra are described best by asymmetric broadening functions [14,15].…”

mentioning

confidence: 99%

Modelling of the intersubband spontaneous emission spectrum in semiconductor quantum wells with regard to many-particle interaction

Drozd

Афоненко

2011

J Appl Spectrosc

View full text Add to dashboard Cite

Energy levels and wave functions of a system of 2-4 interacting electrons in a quantum well have been calculated numerically by the direct solution of the many-body Schroedinger equation. The calculated spectra of the intersubband spontaneous emission have been compared with analytical approximations derived using perturbation theory. It has been found that the short wavelength edge of the form factor of spontaneous intersubband transitions decays exponentially as a function of detuning; the long wavelength edge, according to a power law.

show abstract

Balance-equation method for simulating terahertz quantum-cascade lasers using a wave-function basis with reduced dipole moments of tunnel-coupled states

Ушаков¹,

Афоненко²,

Dubinov³

et al. 2019

Quantum Electron.

View full text Add to dashboard Cite

A model based on a system of balance equations for localised and continuum states is developed to calculate the current − voltage (I − V) and power characteristics of quantum-cascade lasers (QCLs) operating in the terahertz (THz) range. A method for modifying the eigenbasis of the Schrödinger equation by reducing the dipole moments of tunnel-coupled states is proposed to take into account the effect of dephasing on the carrier transport. The calculated and experimental data on the current − voltage characteristics and the dependence of the integrated radiation intensity on current for the THz QCLs lasing at 2.3 THz are compared. The calculated and measured values of the threshold current, lasing current range, and maximum operating temperature T max are found to be in good agreement. It is shown that T max can be increased by 25 % by reducing the thickness of the top contact layer n +-GaAs of the laser structure under study from 800 to 100 nm.

show abstract

Calculation of gain and luminescence spectra of quantum-cascade laser structures taking into account asymmetric emission line broadening

Cited by 5 publications

References 12 publications

The operation of THz quantum cascade laser in the region of negative differential resistance

The operation of THz quantum cascade laser in the region of negative differential resistance

Modelling of the intersubband spontaneous emission spectrum in semiconductor quantum wells with regard to many-particle interaction

Balance-equation method for simulating terahertz quantum-cascade lasers using a wave-function basis with reduced dipole moments of tunnel-coupled states

Contact Info

Product

Resources

About