Wideband electrically controlled vernier frequency tunable terahertz quantum cascade laser iman kundu, joshua r. Monolithically, widely tunable quantum cascade lasers. High power continuous operation of a widely tunable quantum. Broadband, tunable, and monolithic quantum cascade lasers.
Monolithic widely tunable interband cascade lasers for safety and security. Wideband tuning is achieved through grating assisted coupling of the optical mode between lateral waveguides, allowing 10 times the. A widely voltagetunable quantum cascade laser based on twostep coupling. Quasicontinuous tuning of the single mode emission over a total spectral range of 242 nm was realized at two regions between 8. Widely tunable midinfrared quantum cascade lasers using sampled grating reflectors tobias s. 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. Highefficiency quantum cascade lasers have been demonstrated with up to wattlevel output power in the midinfrared region. Widelytunable monolithic terahertz quantum cascade laser. 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. Introducing quantum cascade laser analyzer technology designed for hazardous areas.
Aug 16, 2017 monolithic beam steering in a midinfrared, surfaceemitting, photonic integrated circuit. Broadly tunable terahertz differencefrequency generation in quantum cascade lasers on silicon seungyong jung, ajae hyun kim, yifan jiang, karun vijayraghavan, b and mikhail a. Us8712256b2 monolithic widelytunable coherent receiver. Monolithic beam steering in a midinfrared, surfaceemitting. 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. Remote sensing with commutable monolithic laser and detector. 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. The laser is tuned using an intracavity filter based on nested asymmetric machzehnder interferometers with electrorefractive modulators. This monolithic approach allows fast electrical tuning, but is hampered. This multisection qc laser is a monolithically tunable device. Room temperature continuous wave, monolithic tunable thz. Monolithic midinfrared beam steering architecture with linear grating.
Wenjia zhou wins best paper award at spie photonics west 2016 c. Pdf recent progress of quantum cascade laser research from 3 to. The topic of cw operation of thz dfgqcls is discussed in section 4. Room temperature continuous wave, monolithic tunable thz sources based on highly efficient midinfrared quantum cascade lasers. They can be used for infrared absorption spectroscopy of trace gases, for example. Widely tunable singlemode quantum cascade laser source for midinfrared spectroscopy benjamin g. Engineering multisection quantum cascade lasers for broadband. 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.
This is achieved in a space efficient manner by integrating an asymmetric sampled grating distributed feedback tunable laser with an optical amplifier. 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. This is the simplest of the quantum cascade lasers. Progress in monolithic, broadband, widely tunable midinfrared. Pdf monolithically, widely tunable quantum cascade. Various embodiments of a coherent receiver including a widely tunable local oscillator laser are described herein.
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. 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. The possibility of developing ganbased qcls is also shown. 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. The widely tunable photoresponse combined with theoretical calculations show the promising future of bp thin film as an alternative and highquality material for. An overview is prefaced, including a brief description of their beginnings and operating basics. Quantum cascade lasers are unipolar intersubband devices, emitting in the. Mansuripur,1 stefan menzel, 2 romain blanchard, laurent diehl,3 christian pflugl,3 yong huang, 4 jaehyun ryou, russell d.
Frequency comb quantum cascade lasers emitting light on a wide spectrum consisting of equidistant peaks in frequency space. Recent progress in terahertz differencefrequency quantum. Widely tunable monolithic midinfrared quantum cascade lasers. This electrically tuned laser consists of a gain section placed between two super structure grating ssg distributed bragg reflectors dbrs. Broadly tunable monolithic roomtemperature terahertz quantum cascade laser sources. In the midinfrared midir, arrays of distributed feedback quantum cascade lasers qcl have been developed as a serious alternative to obtain extended.
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. 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. Light,1 jerry waldman,2 neal erickson,3 and xifeng qian1 1photonics center, department of physics and applied physics, university of massachusetts lowell. Center for quantum devices most downloaded journal articles. Osa monolithic integration of a widelytunable midinfrared. Monolithic widely tunable quantum cascade laser nasaads. Pdf the quantum cascade laser qcl is becoming the leading laser source in the midinfrared midir range, which. Jul 11, 2014 broadly tunable monolithic roomtemperature terahertz quantum cascade laser sources. 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.
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. Ir quantum cascade laser qcl products boston electronics. This monolithic, widely tunable laser technology is compact, with no moving parts, and will. Maxion technologies has designed a monolithic, widely tunable quantum cascade qc laser for use in chemical sensing applications. Monolithic beam steering in a midinfrared, surface. Witinskia, and federico capassoa,b a eos photonics, inc. By varying the injection currents to the two grating sections of this device, its emission wavelength can be tuned from 4. In some embodiments, the coherent receiver can be integrated with waveguides, optical splitters and detectors to form a monolithic optical heterohomodyne receiver. High tuning stability of sampled grating quantum cascade lasers. Widely tunable roomtemperature, electricallypumped semiconductor sources in 15 thz spectral range are highly desired for spectroscopy and imaging application. This electrically tuned laser consists of a gain section placed between two super structure grating ssg distributed bragg re. Quantum cascade laser based hybrid dual comb spectrometer. The authors report the fabrication of widely tunable monolithic quantum cascade lasers qcls with coupled fabryperot fp cavities on indium phosphide. 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.
Widely tunable singlemode quantum cascade laser source for. Where to buy quantum cascade lasers, qcl, manufacturers and. Widely tunable black phosphorus midinfrared photodetector. Depending on their design, cw thz dfgqcls can broadband multimode emission with a narrow intermode beatnote frequency. Wattlevel continuouswave emission from a bifunctional quantum. Pdf monolithically, widely tunable quantum cascade lasers. Monolithic widely tunable quantum cascade laser request pdf. However, the wide wavelength tuning that is critical for spectroscopy applications. Widely tunable monolithic midinfrared quantum cascade. Thermally tunable quantum cascade laser with an external.
Broadband thz lasing from a photon phonon quantum cascade structure. Belkin,b ross audet,c jim macarthur, laurent diehl, christian p. Belkin1 electrically pumped roomtemperature semiconductor sources of tunable terahertz radiation. This monolithic, widely tunable laser technology is. Quantum cascade lasers are semiconductor based laser sources a meeting in the midinfrared or in the terahertz region. Broadly tunable monolithic roomtemperature terahertz. Broadly tunable terahertz difference frequency generation in. 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.
Here we demonstrate a widely tunable qcl source over the 6. This monolithic, widely tunable laser technology is compact, with no. Monolithically, widely tunable quantum cascade lasers based on a. High performance monolithic, broadly tunable midinfrared quantum. Progress in monolithic, broadband, widely tunable midinfrared quantum cascade lasers. Multiwavelength distributed feedback quantum cascade lasers for. Monolithically, widely tunable quantum cascade lasers based on a heterogeneous active region design. Monolithically, widely tunable quantum cascade lasers based.
Widely tunable midinfrared quantum cascade lasers using. Broadly tunable monolithic roomtemperature terahertz quantum. 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. Widely tunable quantum cascade laserbased terahertz source. 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. Visit journal we present recent progress on the development of monolithic, broadband, widely tunable midinfrared quantum cascade lasers.
Monolithic photonic integration technology platform and devices at wavelengths. Electrically tunable, high performance quantum cascade laser. Widely tunable room temperature thz quantum cascade laser sources. Apr 29, 2015 recent progress in widely tunable singlemode room temperature terahertz quantum cascade laser sources abstract.
High power continuous operation of a widely tunable quantum cascade laser with an. Materials used, as well as growth methods, are also described. Widely tunable quantum cascade laser based terahertz source andriy a. A monolithic, threesection, and widely tunable midinfrared midir quantum cascade laser qcl is demonstrated. Monolithic quantum cascade laser arrays for spectroscopy and. Thermally tunable quantum cascade laser with an external germaniumonsoi distributed bragg re.
Wideband electrically controlled vernier frequency tunable. This monolithic, widely tunable laser technology is compact, with no moving parts and will open new opportunities for mir spectroscopy and chemical sensing. 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. Capasso, widely tunable midinfrared quantum cascade lasers using sampled.
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