Quantum cascade lasers are unipolar intersubband devices, emitting in the. An overview is prefaced, including a brief description of their beginnings and operating basics. A widely voltagetunable quantum cascade laser based on twostep coupling. Monolithically, widely tunable quantum cascade lasers.
Engineering multisection quantum cascade lasers for broadband. In the midinfrared midir, arrays of distributed feedback quantum cascade lasers qcl have been developed as a serious alternative to obtain extended. High power continuous operation of a widely tunable quantum. Wideband tuning is achieved through grating assisted coupling of the optical mode between lateral waveguides, allowing 10 times the. Electrically tunable, high performance quantum cascade laser. Introducing quantum cascade laser analyzer technology designed for hazardous areas. The authors report the fabrication of widely tunable monolithic quantum cascade lasers qcls with coupled fabryperot fp cavities on indium phosphide. Progress in monolithic, broadband, widely tunable midinfrared quantum cascade lasers manijeh razeghi wenjia zhou ryan mcclintock donghai wu steven slivken optical engineering 571, 011018 december 1, 2017. Maxion technologies has designed a monolithic, widely tunable quantum cascade qc laser for use in chemical sensing applications. Pdf recent progress of quantum cascade laser research from 3 to. Light,1 jerry waldman,2 neal erickson,3 and xifeng qian1 1photonics center, department of physics and applied physics, university of massachusetts lowell.
Monolithic widely tunable quantum cascade laser nasaads. Osa monolithic integration of a widelytunable midinfrared. Us8712256b2 monolithic widelytunable coherent receiver. Broadly tunable terahertz differencefrequency generation in quantum cascade lasers on silicon seungyong jung, ajae hyun kim, yifan jiang, karun vijayraghavan, b and mikhail a. In some embodiments, the coherent receiver can be integrated with waveguides, optical splitters and detectors to form a monolithic optical heterohomodyne receiver. Widely tunable midinfrared quantum cascade lasers using. Monolithic midinfrared beam steering architecture with linear grating. Mar 24, 2016 room temperature continuous wave, monolithic tunable thz sources based on highly efficient midinfrared quantum cascade lasers skip to main content thank you for visiting. Dec 21, 2015 wide electrical tuning and high continuous output power is demonstrated from a single mode quantum cascade laser emitting at a wavelength near 4. Widely tunable monolithic midinfrared quantum cascade lasers. We present the operating principle, design, and performance of externalcavity ec and monolithic terahertz thz tuners based on intracavity differencefrequency generation dfg in midinfrared midir quantum cascade lasers qcls. High power continuous operation of a widely tunable quantum cascade laser with an.
We demonstrate monolithic tunable terahertz quantum cascades laser sources with a tuning range over 580 ghz at room temperature by integrating electrically separated distributed feedback section and distributed bragg reflector section into a single device. Broadly tunable monolithic roomtemperature terahertz. The topic of cw operation of thz dfgqcls is discussed in section 4. Recent progress in terahertz differencefrequency quantum. Pdf the quantum cascade laser qcl is becoming the leading laser source in the midinfrared midir range, which. Room temperature continuous wave, monolithic tunable thz. Capasso, widely tunable midinfrared quantum cascade lasers using sampled. This monolithic, widely tunable laser technology is compact, with no moving parts, and will. Wattlevel continuouswave emission from a bifunctional quantum. Summarizing, the applications of these structures cover a broad range, including spectroscopy. Progress in monolithic, broadband, widely tunable midinfrared. Thermally tunable quantum cascade laser with an external germaniumonsoi distributed bragg re. This monolithic, widely tunable laser technology is compact, with no. This monolithic, widely tunable laser technology is.
By varying the injection currents to the two grating sections of this device, its emission wavelength can be tuned from 4. Multiwavelength distributed feedback quantum cascade lasers for. These results show the first realization of a monolithic widely tunable source in the midir and would therefore benefit to the development of fully integrated spectroscopic sensor systems. This is the simplest of the quantum cascade lasers. Thermally tunable quantum cascade laser with an external. Here we demonstrate a widely tunable qcl source over the 6. Quantum cascade laser based hybrid dual comb spectrometer. Ir quantum cascade laser qcl products boston electronics. Room temperature continuous wave, monolithic tunable thz sources based on highly efficient midinfrared quantum cascade lasers. Widely tunable black phosphorus midinfrared photodetector. Monolithic beam steering in a midinfrared, surface. This electrically tuned laser consists of a gain section placed between two super structure grating ssg distributed bragg re.
Highefficiency quantum cascade lasers have been demonstrated with up to wattlevel output power in the midinfrared region. Visit journal we present recent progress on the development of monolithic, broadband, widely tunable midinfrared quantum cascade lasers. Belkin1 electrically pumped roomtemperature semiconductor sources of tunable terahertz radiation. The possibility of developing ganbased qcls is also shown. Nov 22, 2017 the widely tunable photoresponse combined with theoretical calculations show the promising future of bp thin film as an alternative and highquality material for midir photonics especially for. However, the wide wavelength tuning that is critical for spectroscopy applications.
Widely tunable quantum cascade laserbased terahertz source. Widely tunable quantum cascade laser based terahertz source andriy a. Remote sensing with commutable monolithic laser and detector. Wideband electrically controlled vernier frequency tunable terahertz quantum cascade laser iman kundu, joshua r. Mansuripur,1 stefan menzel, 2 romain blanchard, laurent diehl,3 christian pflugl,3 yong huang, 4 jaehyun ryou, russell d. Broadband thz lasing from a photon phonon quantum cascade structure. High tuning stability of sampled grating quantum cascade lasers. Monolithic widely tunable interband cascade lasers for safety and security. The widely tunable photoresponse combined with theoretical calculations show the promising future of bp thin film as an alternative and highquality material for. Quantum cascade lasers qcls have become important laser sources for accessing the midinfrared midir spectral range, achieving wattlevel continuous wave operation in a compact package at room temperature. Broadband, tunable, and monolithic quantum cascade lasers. Wideband electrically controlled vernier frequency tunable. Frequency comb quantum cascade lasers emitting light on a wide spectrum consisting of equidistant peaks in frequency space.
High performance monolithic, broadly tunable midinfrared quantum. Dave mcmillen explains how quantum cascade laser qcl analyzers helps customers solve challenges like realtime gas measurement composition, accuracy, repeatability and reliability of complex analyzers installed in the field and in hazardous areas. Widely tunable singlemode quantum cascade laser source for midinfrared spectroscopy benjamin g. Aug 16, 2017 monolithic beam steering in a midinfrared, surfaceemitting, photonic integrated circuit. Widely tunable roomtemperature, electricallypumped semiconductor sources in 15 thz spectral range are highly desired for spectroscopy and imaging application. Materials used, as well as growth methods, are also described. Jul 11, 2014 broadly tunable monolithic roomtemperature terahertz quantum cascade laser sources. Pdf monolithically, widely tunable quantum cascade lasers. Quasicontinuous tuning of the single mode emission over a total spectral range of 242 nm was realized at two regions between 8.
Progress in monolithic, broadband, widely tunable midinfrared quantum cascade lasers. Monolithic tuneable quantum cascade lasers enlighten. Various embodiments of a coherent receiver including a widely tunable local oscillator laser are described herein. Where to buy quantum cascade lasers, qcl, manufacturers and. This thesis is concerned with the design, fabrication and characterisation of monolithic tuneable quantum cascade lasers qcls, which are suitable for tuneable diode laser based absorption spectroscopy and polarisation dependent spectroscopy in the midinfrared wavelength range. Belkin a, a the university of texas at austin, department of electrical and computer engineering, austin, texas, united states b atx photonics, austin, texas, united. Sgdfb laser array emitting from a single aperture using manual measurement.
Depending on their design, cw thz dfgqcls can broadband multimode emission with a narrow intermode beatnote frequency. Monolithically, widely tunable quantum cascade lasers based on a heterogeneous active region design. Wenjia zhou wins best paper award at spie photonics west 2016 c. This is achieved in a space efficient manner by integrating an asymmetric sampled grating distributed feedback tunable laser with an optical amplifier.
Quantum cascade lasers are semiconductor based laser sources a meeting in the midinfrared or in the terahertz region. Broadly tunable terahertz difference frequency generation in. Witinskia, and federico capassoa,b a eos photonics, inc. This multisection qc laser is a monolithically tunable device. Monolithic photonic integration technology platform and devices at wavelengths. Widely tunable singlemode quantum cascade laser source for. Monolithic quantum cascade laser arrays for spectroscopy and high power applications christian pflugla, laurent diehla, mark f. Monolithic integration of a quantum cascade laser array and. Thz sources based on intracavity differencefrequency generation dfg in dual wavelength midinfrared quantum cascade lasers qcls with cherenkov phasematching 4 are currently the only monolithic roomtemperature. Belkin,b ross audet,c jim macarthur, laurent diehl, christian p. Widely tunable midinfrared quantum cascade lasers using sampled grating reflectors tobias s. Monolithic widely tunable quantum cascade laser, proceedings.
This electrically tuned laser consists of a gain section placed between two super structure grating ssg distributed bragg reflectors dbrs. Monolithic widely tunable quantum cascade laser request pdf. Widely tunable room temperature thz quantum cascade laser sources. Chapter 7 widely tunable monolithic laser diodes we have seen in chapters 4 and 5 that the continuous tuning range is limited by nng, where. The laser is tuned using an intracavity filter based on nested asymmetric machzehnder interferometers with electrorefractive modulators. Monolithically, widely tunable quantum cascade lasers based. This monolithic approach allows fast electrical tuning, but is hampered. This monolithic, widely tunable laser technology is compact, with no moving parts and will open new opportunities for mir spectroscopy and chemical sensing. Pdf monolithically, widely tunable quantum cascade.
Monolithic beam steering in a midinfrared, surfaceemitting. A tunable laser operating from 2011 2042 nm realized as a monolithic inp photonic integrated circuit and fabricated within a multi project wafer run is presented. Monolithically, widely tunable quantum cascade lasers based on a. Room temperature continuous wave, monolithic tunable thz sources based on highly efficient midinfrared quantum cascade lasers skip to main content thank you for visiting. Ultrabroadband quantum cascade laser, tunable over. Widelytunable monolithic terahertz quantum cascade laser. Widely tunable monolithic midinfrared quantum cascade. This multisection qc laser is a monolithically tunable device, similar to those demonstrated in the near ir for telecommunications. Broadly tunable monolithic roomtemperature terahertz quantum cascade laser sources. Although the quantum cascade gain medium can be used to produce incoherent light in a superluminescent configuration, it is most commonly used in combination with an optical cavity to form a laser. Center for quantum devices most downloaded journal articles. Delft university of technology monolithic photonic integration.
Apr 29, 2015 recent progress in widely tunable singlemode room temperature terahertz quantum cascade laser sources abstract. A monolithic, threesection, and widely tunable midinfrared midir quantum cascade laser qcl is demonstrated. They can be used for infrared absorption spectroscopy of trace gases, for example. Broadly tunable monolithic roomtemperature terahertz quantum. Monolithic quantum cascade laser arrays for spectroscopy and.
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