quantum-cascade laser performance
Quantum dot cascade laser
... Quantum cascade lasers are semiconductor laser sources based on intersubband transitions in multiple quantum well systems ...good performance have established themselves as the leading ...
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Purity monitoring in medical gas supply lines with quantum cascade laser technology
... This performance is mainly caused by the in- trinsic, narrow laser-line width of the QCL and the capability to scan across the respective target spectrum with the highest spectral resolution, which makes it ...
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Improving the Out-Coupling of a Metal-Metal Terahertz Frequency Quantum Cascade Laser Through Integration of a Hybrid Mode Section into the Waveguide
... (THz) quantum cascade lasers [1] (QCLs) attain the highest temperature performance [2] in metal- metal (MM) waveguides [3], in which the laser mode is completely confined in the active region ...
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Selective measurements of NO, NO2 and NO yin the free troposphere using quantum cascade laser spectroscopy
... wave quantum cascade laser (cw-QCL) ...design, performance characteristics and ap- plication fields of this kind of analyzer has been presented by McManus et ...individual laser beams ...
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3.5 THz quantum-cascade laser emission from dual diagonal feedhorns
... Despite their excellent potential as supra-THz LO sources, QCL devices exhibit a poor free-space power distribution, i.e. poor antenna pattern quality. This undesirable feature is particu- larly apparent when ...
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A model for a pulsed terahertz quantum cascade laser under optical feedback
... superior performance over short timescales compared with cw operation, owing to the lower internal Joule heating within the THz QCL, and hence higher optical gain, lower net electrical power consumption, and ...
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3.5-THz quantum-cascade laser emission from dual diagonal feedhorns
... Despite their excellent potential as supra-THz LO sources, quantum-cascade laser (QCL) devices are renowned for exhibiting a poor free-space power distribution, i.e. poor antenna pattern quality. ...
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Optical Breadboard Integration of a 3.5-THz Quantum-Cascade Laser Local-Oscillator for the LOCUS Atmospheric Sounder
... In conclusion, we have integrated a 3.5-THz QCL local-oscillator, waveguide and feedhorn within a space- qualified cooler, and installed these within an “elegant breadboard” system containing a demonstration of the ...
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Efficient prediction of terahertz quantum cascade laser dynamics from steady state simulations
... sensitive to temperature, and the corresponding output power degrades rapidly as temperature increases. As such, there is a requirement to understand and mitigate the influence of the temperature dependence of carrier ...
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Model for a pulsed terahertz quantum cascade laser under optical feedback
... superior performance over short timescales compared with cw operation, owing to the lower internal Joule heating within the THz QCL, and hence higher optical gain, lower net electrical power consumption, and ...
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Broadband terahertz gas spectroscopy through multimode self-mixing in a quantum cascade laser
... the laser ridges, Ti/Au (10/150 nm) was deposited on the ...thermal performance, and the ridges were then cleaved and indium-soldered onto a copper ...
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Fast modulation of terahertz quantum cascade lasers using graphene loaded plasmonic antennas
... of performance with the quantum cascade laser (QCL) 1,2 and by time-domain spectroscopic (TDS) systems, in terms of costs, compactness and ...
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Electric field sampling of modelocked pulses from a quantum cascade laser
... reference laser that is short enough to sample the oscillating electric field of the laser under ...high performance designs operating between ...
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Eddy covariance carbonyl sulfide flux measurements with a quantum cascade laser absorption spectrometer
... The determination of the total random flux uncertainty, which is due to the stochastic nature of turbulence and sen- sor noise, and the fraction of it that is due to sensor noise followed Langford et al. (2015), to which ...
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Sample Grating Distributed Feedback Quantum Cascade Laser Array
... feedback quantum cascade laser (DFB-QCL) featuring narrow linewidth, high power, and simple fabrication process become extremely useful for spectroscopy [2, ...the performance of the array is ...
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Quantum cascade laser-based mid-infrared spectrochemical imaging of tissue and biofluids
... The advent and application of QCL technology to the mid-infrared spectroscopic microscopic evaluation of biomedical samples is likely to rapidly expand over the next few years. The successful coupling of a tunable ...
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Injection locking of a terahertz quantum cascade laser to a telecommunications wavelength frequency comb
... In the spectral region from 1.5 to 5 THz, however, the power available from frequency multiplier chains becomes impracticably small, and, as such, the most promising source is the THz quan- tum cascade ...
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Continuous wave room temperature external ring cavity quantum cascade laser
... on quantum cascade laser (QCL) gain ...the laser temporal and spectral stability in all linear cavity ...the laser to emit mainly in one preferable direction achieving the ratio about 9 ...
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Three-dimensional terahertz imaging using swept-frequency feedback interferometry with a quantum cascade laser
... a laser is re-injected into the laser cavity by reflection from a remote ...and laser terminal voltage [13, 14] that depend on both the amplitude and phase of the reflected ...mirror laser ...
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Self-consistent solutions to the intersubband rate equations in quantum cascade lasers: Analysis of a GaAs/AlxGa1-xAs device
... Quantum cascade lasers have been the focus of much research since they were developed in ...their performance. 6,7 At present the only operational quantum cas- cade lasers are in the ...
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