Sample Grating Distributed Feedback Quantum Cascade Laser Array
نویسندگان
چکیده
A sample grating distributed feedback quantum cascade laser array aim at broad tunability and enhanced side mode suppression ratios is presented. Utilizing a sample grating dependence on emission wavelength and epitaxial side down bonding technique, the array of laser ridges exhibited three separated single mode emissions centered at 4.760, 4.721, and 4.711 μm respectively, in continuous wave at room temperature. Side mode suppression ratios of >35 dB and continuous wave output powers of >10 mW per laser ridge were obtained.
منابع مشابه
Monolithically, widely tunable quantum cascade lasers based on a heterogeneous active region design
Quantum cascade lasers (QCLs) have become important laser sources for accessing the mid-infrared (mid-IR) spectral range, achieving watt-level continuous wave operation in a compact package at room temperature. However, up to now, wavelength tuning, which is desirable for most applications, has relied on external cavity feedback or exhibited a limited monolithic tuning range. Here we demonstrat...
متن کاملHigh performance bi-functional quantum cascade laser and detector
Articles you may be interested in High power, widely tunable, mode-hop free, continuous wave external cavity quantum cascade laser for multi-species trace gas detection Appl. Design for high-power, single-lobe, grating-surface-emitting quantum cascade lasers enabled by plasmon-enhanced absorption of antisymmetric modes Appl. High-performance uncooled distributed-feedback quantum cascade laser w...
متن کاملBroadband Distributed-Feedback Quantum Cascade Laser Array Operating From 8.0 to 9.8 m
An ultra-broadband distributed-feedback quantum cascade laser array was fabricated, using a heterogeneous cascade based on two bound-to-continuum designs centered at 8.4 and 9.6 m. This array emitted in a range over 220 cm near a 9m wavelength, operated in pulsed mode at room temperature. The output power of the array varied between 100and 1100-mW peak intensity.
متن کامل8-beam local oscillator array at 4.7 THz generated by a phase grating and a quantum cascade laser.
We present an 8-beam local oscillator (LO) for the astronomically significant [OI] line at 4.7 THz. The beams are generated using a quantum cascade laser (QCL) in combination with a Fourier phase grating. The grating is fully characterized using a third order distributed feedback (DFB) QCL with a single mode emission at 4.7 THz as the input. The measured diffraction efficiency of 74.3% is in an...
متن کاملWidely Tunable Monolithic Mid-Infrared Quantum Cascade Lasers Using Super-Structure Grating Reflectors
A monolithic, three-section, and widely tunable mid-infrared (mid-IR) quantum cascade laser (QCL) is demonstrated. This electrically tuned laser consists of a gain section placed between two super structure grating (SSG) distributed Bragg reflectors (DBRs). By varying the injection currents to the two grating sections of this device, its emission wavelength can be tuned from 4.58 μm to 4.77 μm ...
متن کامل