Results 71 to 80 of about 2,314,699 (185)
Terahertz quantum cascade laser with non-resonant extraction
AIP Advances, 2019 In order to improve the maximum operating temperature of THz quantum cascade lasers (QCLs) we propose to modify the three well resonant phonon design by increasing the energy of the separation between the bottom transition levels and the ground states ...
A. N. Baranov +4 more
doaj +1 more source
A mini-staged multi-stacked quantum cascade laser for improved optical and thermal performance
, 2009 In this paper, a mini-staged multi-stacked quantum cascade laser structure with a designed wavelength of 4.7 mu m is presented. By introducing five 0.5 mu m thick high thermal conductivity InP interbuffer layers, the 60-stages active region core of the ...
Liu JQ +5 more
core
Fully phase-stabilized quantum cascade laser frequency comb
Nature Communications, 2019 Here, the authors demonstrate full stabilization and control of the two key parameters of a four-wavemixing-based quantum cascade laser comb with metrological precision.
Luigi Consolino +10 more
doaj +1 more source
Absolute spectroscopy near 7.8 {\mu}m with a comb-locked extended-cavity quantum-cascade-laser
, 2017 We report the first experimental demonstration of frequency-locking of an extended-cavity quantum-cascade-laser (EC-QCL) to a near-infrared frequency comb.
Marco Marangoni (1619278) +6 more
core +1 more source
Growth of a periodic InP-based heteroepitaxial structure for a quantum cascade laser
, 2005 The route to grow InP-based heteroepitaxial structure for quantum cascade laser by molecular beam epitaxy is reported. Optimized growth conditions including substrate temperature, V/III ratio, growth rates, doping levels and interface control are ...
Wang, ZG +5 more
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Realization of low threshold of InGaAs/InAlAs quantum cascade laser
, 2003 By optimizing the molecule beam epitaxy growth condition, the quality of quantum cascade (QC) material has greatly been improved. The spectrum of double x-ray diffraction indicates that the interface between the constituent layers is very smooth, the ...
Lin P +4 more
core
Integrated Broadband Quantum Cascade Laser [PDF]
, 2016 A broadband, integrated quantum cascade laser is disclosed, comprising ridge waveguide quantum cascade lasers formed by applying standard semiconductor process techniques to a monolithic structure of alternating layers of claddings and active region ...
Mansour, Kamjou, Soibel, Alexander
core
Microring quantum cascade surface emitting lasers
APL PhotonicsWe miniaturize a vertically coupled in-plane whispering gallery mode cavity incorporating a quantum cascade gain medium, aiming to realize the mid-infrared counterpart to the vertical cavity surface emitting laser.
David Stark +2 more
doaj +1 more source
Terahertz Quantum Cascade Laser Operating at 2.94 THz
, 2010 The development of quantum cascade laser at 2.94 THz is reported. The laser structure is based on a bound-to-continuum active region and a semi-insulating surface-plasmon waveguide.
Liu FQ (Liu Feng-Qi) +6 more
core
Realization of quantum cascade laser operating at room temperature
, 2003 X-ray diffraction, as an effective probe and simple method, is used to ascertain the precise control of the epilayer thickness and composition. Intersubband absorption from the whole structure of the QC laser is used to monitor the wavelength of the QC ...
Li CM +4 more
core