Stable Single-mode 20-channel Uniform Buried Grating DFB QCL Array Emitting at ~8.3 μm

2021 ◽  
Author(s):  
Fan Ye ◽  
Fengmin Cheng ◽  
Zhiwei Jia ◽  
JinChuan Zhang ◽  
Ning Zhuo ◽  
...  
Keyword(s):  
Peak Power ◽  
Room Temperature ◽  
Tuning Range ◽  
Single Mode ◽  
Edge Mode ◽  
Quantum Cascade ◽  
Mode Suppression ◽  
Pulsed Mode ◽  
Side Mode ◽  
Front Facet

Abstract A 20-channel distributed feedback (DFB) quantum cascade laser (QCL) arrays based on uniform buried grating have been demonstrated. In pulsed mode, peak power reaches 80 mW and slope efficiency reaches 167 mW/A for 2.5-mm-long laser in the arrays at room temperature. The loss difference of two band-edge mode increases when reflectivity of the front facet becomes small, which prevents the mode hopping. The device shows linear tuning after the anti-reflectivity coating is deposited in the front facet, maintaining peak power of 64 mW. The whole chip covers a tuning range of 64 cm-1, centering at 8.3 μm, with side-mode-suppression-ratio over 20 dB at room temperature.

scholarly journals Исследование спектров генерации арочных квантово-каскадных лазеров

2020 ◽  
Vol 128 (6) ◽  
pp. 696
Author(s):  
А.В. Бабичев ◽  
Д.А. Пашнев ◽  
Д.В. Денисов ◽  
А.Г. Гладышев ◽  
Ю.К. Бобрецова ◽  
...  
Keyword(s):  
Molecular Beam ◽  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Lasing Wavelength ◽  
Quantum Cascade ◽  
Mode Suppression ◽  
Ring Diameter ◽  
Solid Alloys ◽  
Cascade Lasers ◽  
Side Mode

The results of studying the temperature characteristics of arched quantum-cascade lasers of 7-8 μm spectral range with different geometric sizes are presented. Laser heterostructure was grown by molecular beam epitaxy. The active region consisted of 50 cascades based on heteropairs of solid alloys In0.53Ga0.47As/Al0.48In0.52As. Single-mode lasing was demonstrated for lasers with a half-ring diameter of 100 μm and a length of linear section of 1 mm. The maximum side-mode suppression ratio at a temperature of 290 K was 26 dB, the lasing wavelength was 7.73 μm.

Room-temperature continuous-wave single-mode quantum cascade lasers

2006 ◽  
Author(s):  
Stéphane Blaser ◽  
Lubos Hvozdara ◽  
Yargo Bonetti ◽  
Antoine Muller ◽  
Andreas Bächle ◽  
...  
Keyword(s):  
Room Temperature ◽  
Continuous Wave ◽  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Quantum Cascade ◽  
Cascade Lasers

scholarly journals Gain-guided broad area quantum cascade lasers emitting 235 W peak power at room temperature

2016 ◽  
Vol 24 (17) ◽  
pp. 19063 ◽  
Author(s):  
Ilia Sergachev ◽  
Richard Maulini ◽  
Alfredo Bismuto ◽  
Stephane Blaser ◽  
Tobias Gresch ◽  
...  
Keyword(s):  
Peak Power ◽  
Room Temperature ◽  
Quantum Cascade Lasers ◽  
Broad Area ◽  
Quantum Cascade ◽  
Cascade Lasers

Room temperature, single mode emission from two-section coupled cavity InGaAs/AlGaAs/GaAs quantum cascade laser

2015 ◽  
Vol 118 (13) ◽  
pp. 133103 ◽  
Author(s):  
K. Pierściński ◽  
D. Pierścińska ◽  
M. Pluska ◽  
P. Gutowski ◽  
I. Sankowska ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Room Temperature ◽  
Single Mode ◽  
Quantum Cascade ◽  
Coupled Cavity

scholarly journals Full C-Band Tunable V-Cavity-Laser based TOSA and SFP Transceiver Modules

2018 ◽  
Vol 9 (2) ◽  
pp. 327
Author(s):  
Saravanan K ◽  
V Mathivanan
Keyword(s):  
Data Center ◽  
Tuning Range ◽  
Low Cost ◽  
Tunable Laser ◽  
Mode Suppression ◽  
Half Wave ◽  
Data Rates ◽  
Cavity Laser ◽  
Small Form Factor ◽  
Side Mode

<span lang="EN-US">We report the latest development in tunable transmitter optical sub-assembly (TOSA) and small form-factor pluggable (SFP) transceivers based on simple and compact V-cavity laser (VCL), aiming for low-cost deployment in metro, access and data center networks. The VCL employs a half-wave coupler to achieve high side-mode suppression ratio (SMSR) and the Vernier effect to achieve a wide wavelength tuning range. Full C-band tuning from 1529.55-nm to 1566.31-nm with SMSR above 36 dB is demonstrated. Since the laser does not involve any grating or epitaxial regrowth, and has a simple tuning algorithm, it allows simpler processes for fabrication and testing as compared to other widely tunable laser structures. Compact TOSAs and SFP transceiver modules have been developed for full C-band tuning with up to 93 channels at 50 GHz spacing. Transmission experiments are carried out for direct modulation with data rates from 2.5 Gbps to 8.5 Gbps. The results of reliability tests of the modules are also presented.</span>

scholarly journals Wavelength-Flexible Thulium-Doped Fiber Laser Based on Digital Micromirror Array

Micromachines ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1036
Author(s):  
Xiao Chen ◽  
Dezheng Dai ◽  
Yi Zhang ◽  
Hongyuan Wu ◽  
Yunshu Gao ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Suppression Ratio ◽  
Room Temperature ◽  
Laser System ◽  
Two Dimensional ◽  
Digital Micromirror Device ◽  
Power Fluctuation ◽  
Lasing Wavelength ◽  
Mode Suppression ◽  
Side Mode

Wavelength-tunable thulium-doped fiber laser is demonstrated employing a digital micromirror device (DMD) in combination with a fixed grating. The diffraction property of four typical models of DMDs and its steering efficiency for the laser system are analyzed based on two-dimensional grating theory. By spatially modulating reflective patterns on a DMD, the stable, fast, and flexible tuning of lasing wavelength from 1930 nm to 2000 nm is achieved with wavelength tuning accuracy of 0.1 nm. The side-mode suppression ratio is larger than 50 dB around the 2 μm band with 3 dB linewidth less than 0.05 nm. The wavelength drift and power fluctuation are lower than 0.05 nm and 0.1 dB within 1 h at the room temperature, respectively.

scholarly journals Long Wavelength (λ > 17 µm) Distributed Feedback Quantum Cascade Lasers Operating in a Continuous Wave at Room Temperature

Photonics ◽  
2019 ◽  
Vol 6 (1) ◽  
pp. 31 ◽  
Author(s):  
Hoang Nguyen Van ◽  
Zeineb Loghmari ◽  
Hadrien Philip ◽  
Michael Bahriz ◽  
Alexei Baranov ◽  
...  
Keyword(s):  
Semiconductor Lasers ◽  
Room Temperature ◽  
Continuous Wave ◽  
Quantum Cascade Lasers ◽  
Molecular Spectroscopy ◽  
Single Mode ◽  
Distributed Feedback ◽  
Long Wavelength ◽  
Quantum Cascade ◽  
Cascade Lasers

The extension of the available spectral range covered by quantum cascade lasers (QCL) would allow one to address new molecular spectroscopy applications, in particular in the long wavelength domain of the mid-infrared. We report in this paper the realization of distributed feedback (DFB) QCLs, made of InAs and AlSb, that demonstrated a continuous wave (CW) and a single mode emission at a wavelength of 17.7 µm, with output powers in the mW range. This is the longest wavelength for DFB QCLs, and for any QCLs or semiconductor lasers in general, operating in a CW at room temperature.

Room-temperature, continuous-wave, single-mode quantum-cascade lasers at λ≃5.4μm

2005 ◽  
Vol 86 (4) ◽  
pp. 041109 ◽  
Author(s):  
Stéphane Blaser ◽  
Dmitri A. Yarekha ◽  
Lubos Hvozdara ◽  
Yargo Bonetti ◽  
Antoine Muller ◽  
...  
Keyword(s):  
Room Temperature ◽  
Continuous Wave ◽  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Quantum Cascade ◽  
Cascade Lasers
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