[PDF] Top 20 Low Power Consumption Substrate Emitting DFB Quantum Cascade Lasers
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Low Power Consumption Substrate Emitting DFB Quantum Cascade Lasers
... dissipated power as low as ...to DFB devices. In 2014, Ryan M. Briggs et al. reported a single-mode DFB QCL emitting at ...threshold power con- sumption of 0.76 W and maximum ... See full document
5
Single-mode surface-emitting concentric-circular-grating terahertz quantum cascade lasers
... face emitting THz QCLs using second-order CCGs, which can be simply fabricated by metal evaporation on top of the laser active ...CCG DFB QCL has a similar threshold current to a ridge laser of comparable ... See full document
5
Surface-emitting terahertz quantum cascade lasers with continuous-wave power in the tens of milliwatt range
... the low-effective-index-region, which blue-shifts the frequency of both band edge ...very low filling-factors are in- compatible with achieving uniform current ... See full document
6
Low divergence single-mode surface-emitting concentric-circular-grating terahertz quantum cascade lasers
... edge- emitting beam tightly (~10°) [10]. For surface-emitting devices, linear second-order DFB grating THz QCLs have been demonstrated to couple the optical power vertically out of a laser ... See full document
12
Thermal effects in InGaAs/AlAsSb quantum-cascade lasers
... higher power density and more heating ...maximum power due to the reduced emitting volume and also reduce the mode overlap with the active region, which in turn will reduce the ... See full document
8
Planar integrated metasurfaces for highly-collimated terahertz quantum cascade lasers
... This low divergence indi- cates a good waveguiding property of the metasurface waveguide, and the low background THz power, away from the surface-emitting beam, implies a high coupling ... See full document
8
Terahertz imaging using quantum cascade lasers — a review of systems and applications
... THz power of 4 mW, despite the QCL being driven with low duty cycle ...QCL emitting 2 mW in cw ...source power at these ...high power of THz QCLs with the benefits of coherent ...as ... See full document
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10 W pulsed operation of substrate emitting photonic crystal quantum cascade laser with very small divergence
... between power and emitting width for edge emitting ...second-order DFB SE-QCLs emitting peak power of ...(PC) DFB grating is a periodic structure with great potential, ... See full document
6
Single mode interband cascade lasers emitting below 2 8 μm
... and low power consuming laser ...ICL DFB technology regarding wavelength coverage is therefore of high interest, especially also with respect to the performance figures of competing semiconductor ... See full document
5
Interface Intermixing in Type II InAs/GaInAsSb Quantum Wells Designed for Active Regions of Mid Infrared Emitting Interband Cascade Lasers
... semiconductor lasers in this spectral range. The first, based on type I quantum well structures, is limited to below 4 μm due to the accessible band gaps and band offsets in a combination of quaternary ... See full document
7
Interface intermixing in type II InAs/GaInAsSb quantum wells designed for active regions of mid infrared emitting interband cascade lasers
... semiconductor lasers in this spectral range. The first, based on type I quantum well structures, is limited to below 4 μm due to the accessible band gaps and band offsets in a combination of quaternary ... See full document
7
Substrate emitting ring interband cascade lasers
... cade lasers with light emission at k ...second-order DFB grating into the upper cladding layers and subsequently filled the etched grooves with ...output power and the slope efficiency are higher ... See full document
5
High Efficiency, Low Power Consumption DFB Quantum Cascade Lasers Without Lateral Regrowth
... years, quantum cascade lasers (QCLs) have proven to be very efficient coherent light sources in the mid-infrared region with a wide variety of applications, such as trace gas sensing, high-resolution ... See full document
5
Continuous-wave highly-efficient low-divergence terahertz wire lasers
... (THz) quantum cascade lasers (QCLs) have undergone rapid development since their demonstration, showing high power, broad-tunability, quantum-limited linewidth, and ultra-broadband ... See full document
8
Development of Terahertz Frequency Quantum Cascade Lasers for the Applications as Local Oscillators
... Fig. 4 shows the waveguide block with a QCL integrated inside. The wave- guide block was precision-machined directly into a Cu block by mechanical mi- crofabrication techniques, with a channel of cross-sectional ... See full document
13
Accuracy Improvement of Blood Glucose Measurement System Using Quantum Cascade Lasers
... of DFB-QCLs can simplify the system, and a preliminary study demon- strated the possibility of blood glucose measurement using the proposed system [25] [26] ... See full document
10
The MBE growth and optimization of high performance terahertz frequency quantum cascade lasers
... The technique of molecular beam epitaxy has recently been used to demonstrate the growth of terahertz frequency GaAs/AlGaAs quantum cascade lasers (QCL) with Watt-level optical output powers. In this ... See full document
13
Coupled-cavity terahertz quantum cascade lasers for single mode operation
... emitted power at a heat sink temperature of 13 K is in excess of ...THz power meter and was not corrected for the polyethylene window transmission coeffi- cient ( ...plasmon-waveguided DFB THz QCLs ... See full document
6
Silver-based surface plasmon waveguide for terahertz quantum cascade lasers
... output power compared to the corresponding Au-based ...output power of the Ag-based device is 20% higher for B1 and 30% higher for B2, with the improvement in the quantum efficiency a little smaller ... See full document
14
Optical feedback effects on terahertz quantum cascade lasers: modelling and applications
... Figure 3 shows the simulation output for a CC THz QCL with an active cavity length of 1.5 mm, air gap length of 13 µm, and passive cavity length of 1.582 mm. The passive cavity of the CC THz QCL was driven by a series of ... See full document
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