scholarly journals Monolithic, Optically Coupled, Multi-Section Mid-IR Quantum Cascade Lasers

Photonics ◽  
2021 ◽  
Vol 8 (12) ◽  
pp. 583
Author(s):  
Kamil Pierściński ◽  
Dorota Pierścińska ◽  
Grzegorz Sobczak ◽  
Aleksandr Kuźmicz ◽  
Krzysztof Chmielewski ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Wavelength Shift ◽  
Time Resolved ◽  
Design Modification ◽  
Quantum Cascade ◽  
Continuous Tuning ◽  
Wide Range ◽  
Cascade Lasers ◽  
Coupled Cavity

Mid-infrared (mid-IR λ ≈ 3–12 μm), single-mode-emission Quantum Cascade Lasers (QCLs) are of significant interest for a wide range of applications, especially as the laser sources are chosen for laser absorption spectroscopy. In this work, we present the design, fabrication and characterization of multi-section, coupled-cavity, mid-IR quantum cascade lasers. The purpose of this work is to propose a design modification for a coupled-cavity device, yielding a single-mode emission with a longer range of continuous tuning during the pulse, in contrast to a 2-section device. This effect was obtained and demonstrated in the work. The proposed design of a 3-section coupled-cavity QCL allows for a single-mode emission with 35 dB side-mode suppression ratio. Additionally, the time-resolved spectra of the wavelength shift during pulse operation, show a continuous tuning of ~3 cm−1 during the 2 μs pulse. The devices were fabricated in a slightly modified, standard laser process using dry etching.

scholarly journals Coupled-cavity terahertz quantum cascade lasers for single mode operation

2014 ◽  
Vol 104 (24) ◽  
pp. 241102 ◽  
Author(s):  
H. Li ◽  
J. M. Manceau ◽  
A. Andronico ◽  
V. Jagtap ◽  
C. Sirtori ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Single Mode Operation ◽  
Quantum Cascade ◽  
Mode Operation ◽  
Cascade Lasers ◽  
Coupled Cavity

Single-mode quantum cascade lasers employing a candy-cane shaped monolithic coupled cavity

2011 ◽  
Vol 99 (24) ◽  
pp. 241112 ◽  
Author(s):  
Peter Q. Liu ◽  
Kamil Sladek ◽  
Xiaojun Wang ◽  
Jen-Yu Fan ◽  
Claire F. Gmachl
Keyword(s):  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Quantum Cascade ◽  
Cascade Lasers ◽  
Coupled Cavity

Single-mode enhancement in coupled-cavity quantum cascade lasers

2016 ◽  
Author(s):  
M. Kuc ◽  
R. P. Sarzała ◽  
T. Czyszanowski ◽  
M. Bugajski
Keyword(s):  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Quantum Cascade ◽  
Cascade Lasers ◽  
Coupled Cavity

scholarly journals Publisher’s Note: “Continuous tuning of two-section, single-mode terahertz quantum-cascade lasers by fiber-coupled, near-infrared illumination” [AIP Advances 7, 055201 (2017)]

AIP Advances ◽  
2017 ◽  
Vol 7 (5) ◽  
pp. 059903 ◽  
Author(s):  
Martin Hempel ◽  
Benjamin Röben ◽  
Michael Niehle ◽  
Lutz Schrottke ◽  
Achim Trampert ◽  
...  
Keyword(s):  
Near Infrared ◽  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Quantum Cascade ◽  
Continuous Tuning ◽  
Cascade Lasers

scholarly journals Особенности одночастотной генерации в квантово-каскадных лазерах спектрального диапазона 7.5-8.0 μm с малой длиной резонатора

2022 ◽  
Vol 48 (5) ◽  
pp. 7
Author(s):  
А.В. Бабичев ◽  
Е.С. Колодезный ◽  
А.Г. Гладышев ◽  
Д.В. Денисов ◽  
Н.Ю. Харин ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Threshold Current ◽  
Wavelength Shift ◽  
Quantum Cascade ◽  
Mode Suppression ◽  
Fabry Perot ◽  
Lasing Regime ◽  
Temperature Tuning ◽  
Cascade Lasers

The possibility of realizing single-mode emission in quantum-cascade lasers due to modulation of output optical losses in a Fabry-Perot cavity is demonstrated. For the active region of the 7.5–8.0 μm spectral range, two-phonon resonance design we used thus the 50 stages and waveguide layers based on indium phosphide made it possible to realize single-mode lasing at 7.765 μm and at temperature of 292 K. Side-mode suppression ratio was about 24 dB and remained the same with an increase in the current pumping up to 1.2 of the threshold current values. The coefficient of wavelength shift with temperature (temperature tuning) in the single-mode lasing regime was 0.56 nm / K.

scholarly journals Coupled Cavity Mid-IR Quantum Cascade Lasers Fabricated by Dry Etching

Photonics ◽  
2020 ◽  
Vol 7 (3) ◽  
pp. 45
Author(s):  
Kamil Pierściński ◽  
Dorota Pierścińska ◽  
Aleksandr Kuźmicz ◽  
Grzegorz Sobczak ◽  
Maciej Bugajski ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Quantum Cascade ◽  
Inductively Coupled ◽  
Detection Systems ◽  
Mode Suppression ◽  
Cascade Lasers ◽  
Coupled Cavity ◽  
Better Than

In this work, two-section, coupled cavity, mid-IR quantum cascade lasers (QCLs) were characterized in terms of their tuning range and emission stability under operation towards potential application in detection systems. Devices were processed by inductively coupled plasma reactive ion etching (ICP-RIE) from InP-based heterostructure, designed for emission in the 9.x micrometer range. Single mode devices were demonstrated with a better than 20 dB side mode suppression ratio (SMRS). The fabrication method resulted in improved yield, as well as high repeatability of individual devices. Continuous, mode-hop-free tuning of emission wavelength was observed across ~4.5 cm−1 for the range of temperatures of the heat sink from 15 °C to 70 °C. Using the thermal perturbation in the lasing cavity, in conjunction with controlled hopping between coupled-cavity (CC) modes, we were able to accomplish tuning over the range of up to ~20 cm−1.

scholarly journals Continuous tuning of two-section, single-mode terahertz quantum-cascade lasers by fiber-coupled, near-infrared illumination

AIP Advances ◽  
2017 ◽  
Vol 7 (5) ◽  
pp. 055201 ◽  
Author(s):  
Martin Hempel ◽  
Benjamin Röben ◽  
Michael Niehle ◽  
Lutz Schrottke ◽  
Achim Trampert ◽  
...  
Keyword(s):  
Near Infrared ◽  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Quantum Cascade ◽  
Continuous Tuning ◽  
Cascade Lasers
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