Wideband electrically controlled vernier frequency tunable terahertz quantum cascade laser iman kundu, joshua r. 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. Room temperature continuous wave, monolithic tunable thz sources based on highly efficient midinfrared quantum cascade lasers skip to main content thank you for visiting. Summarizing, the applications of these structures cover a broad range, including spectroscopy. Light,1 jerry waldman,2 neal erickson,3 and xifeng qian1 1photonics center, department of physics and applied physics, university of massachusetts lowell. Mansuripur,1 stefan menzel, 2 romain blanchard, laurent diehl,3 christian pflugl,3 yong huang, 4 jaehyun ryou, russell d.
Ir quantum cascade laser qcl products boston electronics. Widely tunable singlemode quantum cascade laser source for. This monolithic, widely tunable laser technology is compact, with no. 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. This electrically tuned laser consists of a gain section placed between two super structure grating ssg distributed bragg reflectors dbrs. 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. Quantum cascade lasers are unipolar intersubband devices, emitting in the. Monolithic tuneable quantum cascade lasers enlighten. In the midinfrared midir, arrays of distributed feedback quantum cascade lasers qcl have been developed as a serious alternative to obtain extended. Quantum cascade lasers are semiconductor based laser sources a meeting in the midinfrared or in the terahertz region. Capasso, widely tunable midinfrared quantum cascade lasers using sampled.
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. Widely tunable midinfrared quantum cascade lasers using sampled grating reflectors tobias s. Monolithically, widely tunable quantum cascade lasers. Wattlevel continuouswave emission from a bifunctional quantum.
Monolithic widely tunable quantum cascade laser nasaads. Pdf monolithically, widely tunable quantum cascade. Wideband tuning is achieved through grating assisted coupling of the optical mode between lateral waveguides, allowing 10 times the. Depending on their design, cw thz dfgqcls can broadband multimode emission with a narrow intermode beatnote frequency. Monolithic widely tunable quantum cascade laser, proceedings.
Monolithic quantum cascade laser arrays for spectroscopy 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. Pdf recent progress of quantum cascade laser research from 3 to. This monolithic, widely tunable laser technology is. Ultrabroadband quantum cascade laser, tunable over. Here we demonstrate a widely tunable qcl source over the 6. The widely tunable photoresponse combined with theoretical calculations show the promising future of bp thin film as an alternative and highquality material for.
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. Broadly tunable monolithic roomtemperature terahertz quantum cascade laser sources. Broadly tunable terahertz differencefrequency generation in quantum cascade lasers on silicon seungyong jung, ajae hyun kim, yifan jiang, karun vijayraghavan, b and mikhail a. High performance monolithic, broadly tunable midinfrared quantum. Wideband electrically controlled vernier frequency tunable. Pdf the quantum cascade laser qcl is becoming the leading laser source in the midinfrared midir range, which. Monolithic beam steering in a midinfrared, surfaceemitting.
This multisection qc laser is a monolithically tunable device, similar to those demonstrated in the near ir for telecommunications. Center for quantum devices most downloaded journal articles. 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. Widely tunable quantum cascade laserbased terahertz source.
Monolithically, widely tunable quantum cascade lasers based on a heterogeneous active region design. They can be used for infrared absorption spectroscopy of trace gases, for example. Recent progress in terahertz differencefrequency quantum. Apr 29, 2015 recent progress in widely tunable singlemode room temperature terahertz quantum cascade laser sources abstract. Thermally tunable quantum cascade laser with an external germaniumonsoi distributed bragg re. Electrically tunable, high performance quantum cascade laser.
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. A monolithic, threesection, and widely tunable midinfrared midir quantum cascade laser qcl is demonstrated. This monolithic, widely tunable laser technology is compact, with no moving parts, and will. Highefficiency quantum cascade lasers have been demonstrated with up to wattlevel output power in the midinfrared region. High power continuous operation of a widely tunable quantum cascade laser with an.
Widely tunable quantum cascade laser based terahertz source andriy a. The authors report the fabrication of widely tunable monolithic quantum cascade lasers qcls with coupled fabryperot fp cavities on indium phosphide. Widely tunable black phosphorus midinfrared photodetector. Engineering multisection quantum cascade lasers for broadband. This electrically tuned laser consists of a gain section placed between two super structure grating ssg distributed bragg re. Thermally tunable quantum cascade laser with an external. Room temperature continuous wave, monolithic tunable thz sources based on highly efficient midinfrared quantum cascade lasers. Osa monolithic integration of a widelytunable midinfrared. The possibility of developing ganbased qcls is also shown.
Widely tunable room temperature thz quantum cascade laser sources. Monolithic midinfrared beam steering architecture with linear grating. Monolithic widely tunable interband cascade lasers for safety and security. Progress in monolithic, broadband, widely tunable midinfrared quantum cascade lasers.
Multiwavelength distributed feedback quantum cascade lasers for. Quasicontinuous tuning of the single mode emission over a total spectral range of 242 nm was realized at two regions between 8. Wenjia zhou wins best paper award at spie photonics west 2016 c. Monolithic widely tunable quantum cascade laser request pdf. Delft university of technology monolithic photonic integration. In some embodiments, the coherent receiver can be integrated with waveguides, optical splitters and detectors to form a monolithic optical heterohomodyne receiver. Progress in monolithic, broadband, widely tunable midinfrared. Widely tunable singlemode quantum cascade laser source for midinfrared spectroscopy benjamin g. A widely voltagetunable quantum cascade laser based on twostep coupling. An overview is prefaced, including a brief description of their beginnings and operating basics. Visit journal we present recent progress on the development of monolithic, broadband, widely tunable midinfrared quantum cascade lasers. 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.
Broadly tunable monolithic roomtemperature terahertz. Sgdfb laser array emitting from a single aperture using manual measurement. This is achieved in a space efficient manner by integrating an asymmetric sampled grating distributed feedback tunable laser with an optical amplifier. By varying the injection currents to the two grating sections of this device, its emission wavelength can be tuned from 4. Monolithically, widely tunable quantum cascade lasers based. Introducing quantum cascade laser analyzer technology designed for hazardous areas. Monolithic beam steering in a midinfrared, surface. 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. This is the simplest of the quantum cascade lasers.
Witinskia, and federico capassoa,b a eos photonics, inc. High tuning stability of sampled grating quantum cascade lasers. This multisection qc laser is a monolithically tunable device. Broadly tunable terahertz difference frequency generation in. Monolithic photonic integration technology platform and devices at wavelengths. Broadband thz lasing from a photon phonon quantum cascade structure. Broadband, tunable, and monolithic quantum cascade lasers. Belkin1 electrically pumped roomtemperature semiconductor sources of tunable terahertz radiation. Widely tunable monolithic midinfrared quantum cascade lasers. Remote sensing with commutable monolithic laser and detector. Various embodiments of a coherent receiver including a widely tunable local oscillator laser are described herein. 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. Pdf monolithically, widely tunable quantum cascade lasers.
This monolithic, widely tunable laser technology is compact, with no moving parts and will open new opportunities for mir spectroscopy and chemical sensing. Jul 11, 2014 broadly tunable monolithic roomtemperature terahertz quantum cascade laser sources. Monolithically, widely tunable quantum cascade lasers based on a. Maxion technologies has designed a monolithic, widely tunable quantum cascade qc laser for use in chemical sensing applications. 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. Widely tunable midinfrared quantum cascade lasers using. Quantum cascade laser based hybrid dual comb spectrometer. High power continuous operation of a widely tunable quantum. Monolithic integration of a quantum cascade laser array and. The topic of cw operation of thz dfgqcls is discussed in section 4. 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. May 11, 2012 read monolithic widely tunable quantum cascade laser, proceedings of spie on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Us8712256b2 monolithic widelytunable coherent receiver. This monolithic approach allows fast electrical tuning, but is hampered. Broadly tunable monolithic roomtemperature terahertz quantum. 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. Materials used, as well as growth methods, are also described. Room temperature continuous wave, monolithic tunable thz. Monolithic quantum cascade laser arrays for spectroscopy and high power applications christian pflugla, laurent diehla, mark f. Where to buy quantum cascade lasers, qcl, manufacturers and. Frequency comb quantum cascade lasers emitting light on a wide spectrum consisting of equidistant peaks in frequency space. Aug 16, 2017 monolithic beam steering in a midinfrared, surfaceemitting, photonic integrated circuit. Belkin,b ross audet,c jim macarthur, laurent diehl, christian p. The laser is tuned using an intracavity filter based on nested asymmetric machzehnder interferometers with electrorefractive modulators. 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.
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