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Journal of Applied Physics, ISSN 0021-8979, 01/2019, Volume 125, Issue 3
Thermal profiles of a single-element quantum cascade laser (QCL) and a five-element QCL array at different bias currents, under quasi-continuous-wave (QCW)... 
Charge coupled devices | Thermal transients | Thermal resistance | Heating | Energy dissipation | Thermal lensing | Thermal imaging | Continuous radiation | Arrays | Time constant | Quantum cascade lasers | Heterostructures
Journal Article
Analyst (Cambridge UK), ISSN 0003-2654, 07/2014, Volume 139, Issue 16, pp. 3856 - 3859
Chemical imaging in the field of vibrational spectroscopy is developing into a promising tool to complement digital histopathology. Applications include... 
Fourier transforms | Focal plane | Imaging | Images | Infrared absorption | Quantum cascade lasers | Microscopes | Laser arrays
Journal Article
Applied Physics B, ISSN 0946-2171, 8/2013, Volume 112, Issue 1, pp. 25 - 33
An innovative spectroscopic system based on an external cavity quantum cascade laser (EC-QCL) coupled with a mid-infrared (mid-IR) fiber and quartz enhanced... 
Quantum Optics | Optics, Optoelectronics, Plasmonics and Optical Devices | Physical Chemistry | Laser Technology, Photonics | Physics, general | Engineering, general | Physics | ENHANCED PHOTOACOUSTIC-SPECTROSCOPY | PHYSICS, APPLIED | OPTICS | QUANTUM CASCADE LASERS | Waveguides | Lasers | Collimators | Modules | Quartz | Coatings | Tuning | Fibers | Iodine
Journal Article
Optics Express, ISSN 1094-4087, 09/2013, Volume 21, Issue 19, pp. 22194 - 22205
The terahertz (THz) frequency quantum cascade laser (QCL) is a compact source of high-power radiation with a narrow intrinsic linewidth. As such, THz QCLs are... 
EXPLOSIVES | OPTICS | SPECTROSCOPY | LOCKING | QUANTUM-CASCADE LASERS | THZ
Journal Article
Faraday discussions, ISSN 1359-6640, 06/2016, Volume 187, pp. 135 - 154
Infrared microscopy has become one of the key techniques in the biomedical research field for interrogating tissue. In partnership with multivariate analysis... 
Microscopy - methods | Infrared Rays | Tissue Array Analysis | Humans | Sensitivity and Specificity | Lasers, Semiconductor | Male | Prostatic Neoplasms - diagnosis | Spectroscopy, Fourier Transform Infrared
Journal Article
Applied Physics B, ISSN 0946-2171, 6/2018, Volume 124, Issue 6, pp. 1 - 9
Instrumentation for environmental monitoring of gaseous pollutants and greenhouse gases tends to be complex, expensive, and energy demanding, because every... 
Quantum Optics | Physics, general | Engineering, general | Physical Chemistry | Physics | Optics, Lasers, Photonics, Optical Devices | NO2 | PHYSICS, APPLIED | OPTICS | MU-M | OPERATION | LASER | Lasers | Digital integrated circuits | Green technology | Air pollution | Sensors | Environmental monitoring | Greenhouse gases | Data entry
Journal Article
Applied Physics Letters, ISSN 0003-6951, 12/2019, Volume 115, Issue 23, p. 231104
We demonstrate a sensitive and compact terahertz heterodyne detection system based on a quantum cascade laser (QCL) as a local oscillator and a hot electron... 
QUANTUM CASCADE LASER | PHASE-LOCKING | PHYSICS, APPLIED
Journal Article
Optics Express, ISSN 1094-4087, 03/2018, Volume 26, Issue 6, pp. 6572 - 6580
Temperature rise during operation is a central concern of semiconductor lasers and especially difficult to measure during a pulsed operation. We present a... 
OPTICS | SPECTROSCOPY | THERMAL IMPEDANCE | QUANTUM-CASCADE LASERS
Journal Article
Optics Express, ISSN 1094-4087, 02/2015, Volume 23, Issue 4, pp. 5190 - 5200
We report the development of on-chip optical components designed to improve the out-coupling of double-metal terahertz (THz) frequency quantum cascade lasers... 
QUANTUM-CASCADE LASERS | CRYSTAL TERAHERTZ LASERS | OPTICS
Journal Article
SEMICONDUCTOR SCIENCE AND TECHNOLOGY, ISSN 0268-1242, 08/2019, Volume 34, Issue 8, p. 83001
We review the progress of multi-wavelength distributed feedback (DFB) quantum cascade lasers (QCLs) as sources for broadband mid-infrared (mid-IR)... 
FREQUENCY-MODULATION | PHYSICS, CONDENSED MATTER | Multi-species trace gas sensing | LINEWIDTH | MATERIALS SCIENCE, MULTIDISCIPLINARY | multiwavelength QCLs | ENGINEERING, ELECTRICAL & ELECTRONIC | NO2 | OPERATION | distributed-feedback (DFB) QCL | Mid-infrared | semiconductor lasers | quantum cascade laser arrays
Journal Article
Optics Express, ISSN 1094-4087, 01/2013, Volume 21, Issue 1, pp. 1008 - 1019
Journal Article
by Gu, CL and Zuo, Z and Luo, DP and Peng, DW and Di, YF and Zou, X and Yang, L and Li, WX
OPTICS LETTERS, ISSN 0146-9592, 12/2019, Volume 44, Issue 23, pp. 5848 - 5851
We demonstrate an effective method to obtain high-repetition-rate femtosecond mid-infrared (mid-IR) pulses by nonlinear optical modulation of mid-IR... 
POWER | FILAMENTATION | OPTICS | DUAL-COMB SPECTROSCOPY | NOISE CHARACTERISTICS | SELF-COMPRESSION | Femtosecond | Parametric amplifiers | Modulation | Ytterbium | Doped fibers | Continuous radiation | Quantum cascade lasers | Repetition | Fiber lasers
Journal Article
Journal Article
Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X, 2016, Volume 9836
Conference Proceeding
Review of Scientific Instruments, ISSN 0034-6748, 02/2017, Volume 88, Issue 2, p. 023108
We demonstrate the use of a pump-probe setup based on two mid-infrared quantum cascade lasers (QCLs) to investigate the melting and crystallization of... 
TRACE-GAS DETECTION | CRYSTALLIZATION | INSTRUMENTS & INSTRUMENTATION | PHYSICS, APPLIED | SPECTROSCOPY | ROTATOR PHASES | BEHAVIOR | SENSOR | QUANTUM CASCADE LASERS | Vibration monitoring | Beams (radiation) | Absorption | Melting | Crystallization | Recrystallization | Infrared lasers | Infrared spectra | Quantum cascade lasers | Bending vibration
Journal Article
Journal Article
Optics Letters, ISSN 0146-9592, 02/2014, Volume 39, Issue 4, pp. 957 - 960
A quartz-enhanced photoacoustic absorption spectroscopy (QEPAS)-based gas sensor was developed for methane (CH4) and nitrous-oxide (N2O) detection. The... 
ENHANCED PHOTOACOUSTIC-SPECTROSCOPY | OPTICS | EMISSIONS | PPB-LEVEL DETECTION | QUANTUM CASCADE LASERS
Journal Article
Proceedings of the Combustion Institute, ISSN 1540-7489, 2019, Volume 37, Issue 2, pp. 1445 - 1452
Extended wavelength tuning of an IH-QCL (integrated heater quantum cascade laser) is exploited for simultaneous detection of methane and acetylene using direct... 
Methane | Absorption spectroscopy | Shock tube | QCL | Acetylene | ENGINEERING, CHEMICAL | THERMODYNAMICS | SPECTROSCOPY | ENERGY & FUELS | ABSORPTION | QUANTUM CASCADE LASER | ENGINEERING, MECHANICAL | Pyrolysis | Sensors | Lasers
Journal Article
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