quantum cascade laser spectroscopy
Selective measurements of NO, NO2 and NO yin the free troposphere using quantum cascade laser spectroscopy
... Beside the optical assembly design, the electronics have also experienced some major improvements. A significant re- duction of the hardware size has been achieved by using com- pact USB-based data acquisition cards (NI ...
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Quantum cascade laser-based mid-infrared spectrochemical imaging of tissue and biofluids
... This is the peer reviewed version of the following article: Clemens, G., Bird, B., Weida, M., Rowlette, J., & Baker, M. J. (2014). Quantum cascade laser- based mid-infrared spectrochemical ...
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Broadband terahertz gas spectroscopy through multimode self-mixing in a quantum cascade laser
... frequency quantum cascade lasers (QCLs) emitting at ...own laser source, and demonstrate the measurement of methanol spectral features simultaneously from two modes of a multi-mode THz QCL over a 17 ...
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Measuring the sampling coherence of a terahertz quantum cascade laser
... femtosecond laser pulse can measure (or sample) the phase-resolved value of a terahertz (THz) electric field by using techniques such as photo-conductive sampling [1,2], electro- optic detection [3,4], and ...
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Terahertz Nanoscopy of Plasmonic Resonances with a Quantum Cascade Laser
... communications, spectroscopy and imaging ...of quantum objects even when covered by a dielectric layer, as an alternative and/or complementary technique to photoluminescence ...
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Narrow-band injection seeding of a terahertz frequency quantum cascade laser: Selection and suppression of longitudinal modes
... multi-mode laser with a tunable narrow-band ...heterodyne spectroscopy require single mode operation, 16 considerable attention has focused on single mode tunable emission in ...
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3.5 THz quantum-cascade laser emission from dual diagonal feedhorns
... In addition to the above, we foresee the wider use of our device in support of other applications where coherent sources of supra-THz radiation are required. These include, for example, the provision of LO power for ...
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Fast modulation of terahertz quantum cascade lasers using graphene loaded plasmonic antennas
... the quantum cascade laser (QCL) 1,2 and by time-domain spectroscopic (TDS) systems, in terms of costs, compactness and ...as spectroscopy or ...
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Is infrared spectroscopy ready for the clinic?
... derivatives (plasma/serum) with remote classi fi cation for continuous bedside monitoring. Mitchell even suggests that a user-friendly “traffic-light” system could be used to further speed-up triaging decisions where green ...
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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, ...
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Injection locking of a terahertz quantum cascade laser to a telecommunications wavelength frequency comb
... High-resolution spectroscopy not only can identify atoms and molecules but also can provide detailed information on their chemical and physical environment and relative ...frequency quantum cascade ...
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Site selective real-time measurements of atmospheric N 2O isotopomers by laser spectroscopy
... measurements. Laser spectroscopy is a valuable alternative because it is in- herently selective, even for molecules with the same mass (Janssen and Tuzson, 2006; Gagliardi et ...of quantum ...
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Electric field sampling of modelocked pulses from a quantum cascade laser
... reference, laser source which produces pulses sufficiently short to sample the electric field of the modelocked pulses under investigation, as in THz time-domain spectroscopy ...reference laser, this ...
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Line defect photonic crystal terahertz quantum cascade laser
... (THz) quantum cascade laser (QCL) provides a versatile tool in a plethora of applications ranging from spectroscopy to astronomy and ...the laser active region (AR), centered around ∼ 2 ...
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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 ...operational quantum cas- cade lasers are in the mid-infrared frequency range 8,9 but recently models have ...
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Photon statistics excitation spectroscopy of a quantum dot micropillar laser
... As has been pointed out by some of the authors recently, systems showing a thresholdlike behavior in their response to coherent optical excitation should yield a clear signature of that nonlinearity already at ...
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Three-dimensional terahertz imaging using swept-frequency feedback interferometry with a quantum cascade laser
... the laser was focused onto the sample using a pair of 2-inch-diameter f/2 off-axis parabolic reflectors, with the mean distance between the laser facet and the target being ...The laser radiation ...
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Quantum dot cascade laser
... Quantum cascade lasers are semiconductor laser sources based on intersubband transitions in multiple quantum well systems ...Although quantum cascade lasers have experienced ...
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Silicon germanium materials for terahertz emission
... One of the most promising fields for terahertz radiation is in medicine, for both imaging and spectroscopy. Unlike X-rays, terahertz radiation does not pose an ionization risk to tissue, due to the lower energy of ...
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Density matrix superoperator for periodic quantum systems and its application to quantum cascade laser structures
... In Ref. 33 we discussed the dissipator which is present in the most common DM implementation in Eq. (9). Adding the dis- sipator to the Liouville equation corresponds to modelling inter- actions in the system by ...
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