[PDF] Top 20 Silver-based surface plasmon waveguide for terahertz quantum cascade lasers
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Silver-based surface plasmon waveguide for terahertz quantum cascade lasers
... the waveguide cladding thickness, which is particularly advantageous for terahertz (THz) frequency QCLs since the growth of suitably thick dielectric waveguides is ...(SP) waveguide to achieve low ... See full document
14
Development of Terahertz Frequency Quantum Cascade Lasers for the Applications as Local Oscillators
... (SISP) waveguide [4] or a double-metal (DM) waveguide ...SISP waveguide, laser ridges were defined by wet chemical ...DM waveguide, Ti/Au of thickness 10/500 nm was deposited on top of the QCL ... See full document
13
Surface-emitting terahertz quantum cascade lasers with continuous-wave power in the tens of milliwatt range
... demonstrated surface-emitting THz QCLs based on graded photonic heterostructure (GPH) resonators (shown schematically in ...GPH lasers, therefore, exhibit stable single-mode emission with high power ... See full document
6
Improving the Out-Coupling of a Metal-Metal Terahertz Frequency Quantum Cascade Laser Through Integration of a Hybrid Mode Section into the Waveguide
... (THz) quantum cascade lasers [1] (QCLs) attain the highest temperature performance [2] in metal- metal (MM) waveguides [3], in which the laser mode is completely confined in the active region by two ... See full document
11
Planar integrated metasurfaces for highly-collimated terahertz quantum cascade lasers
... Light-current-voltage and far-field characterization. Devices with two different groove widths were fabricated, labeled as A and B. The groove widths of device A were 600 mm, whilst device B had a wider groove width of ... See full document
8
Low divergence single-mode surface-emitting concentric-circular-grating terahertz quantum cascade lasers
... and surface-emitting ...spoof surface plasmon collimator for THz QCLs, and successfully reduced the beam divergence to ~10° ...For surface-emitting devices, linear second-order DFB grating THz ... See full document
12
High order sideband generation in terahertz quantum cascade lasers
... Compared to our previous demonstrations 9 with a bound-to- continuum QCL in a single plasmon waveguide, here a longitudinal-optical (LO) depopulation based QCL with a double metal waveguide is ... See full document
6
Resonant−phonon depopulation terahertz quantum cascade lasers and their application in spectroscopic imaging
... each based on a three-well RP depopulation scheme, that have been tailored to provide emission frequencies of ...ridge lasers of different cavity ...SP waveguide can be reduced to as little as 5 ... See full document
20
Fast room temperature detection of terahertz quantum cascade lasers with graphene loaded bow tie plasmonic antenna arrays
... Finally, following a well consolidated tradition in THz imaging [28], we performed the imaging of a leaf. Instead of focusing our attention on the definition of the water content in the leaf’s veins, we acquired a ... See full document
15
Coherent detection of metal-metal terahertz quantum cascade lasers with improved emission characteristics
... single plasmon QCLs were used and until now attempts to couple MM QCLs have not been ...is based on a femtosecond laser producing 80 fs pulses around 800 ... See full document
6
Coupled-cavity terahertz quantum cascade lasers for single mode operation
... sented in Fig. 5, the maximum emitted power at a heat sink temperature of 13 K is in excess of 3.5 mW. The latter was measured with a calibrated THz power meter and was not corrected for the polyethylene window ... See full document
6
Terahertz quantum cascade lasers with thin resonant-phonon depopulation active regions and surface-plasmon waveguides
... SP waveguide were performed using a two-dimensional (2D) finite element model, with complex permittivities of the waveguide layers obtained from the bulk Drude ...calculated waveguide losses α w and ... See full document
17
Single-mode surface-emitting concentric-circular-grating terahertz quantum cascade lasers
... single-mode surface-emitting terahertz frequency quantum cascade lasers utilising non-uniform second-order distributed feedback ...and surface emission for efficient and ... See full document
5
Surface plasmon waveguides with gradually doped or NiAl intermetallic compound buried contact for terahertz quantum cascade lasers
... (2003) Surface plasmon waveguides with gradually doped or NiAl intermetallic compound buried contact for terahertz quantum cascade ... See full document
12
Investigation and Application of Microscale Semiconductor Lasers and Cavities
... ridge waveguide lasers based on air-confined designs by ...alcohol based on laser spectral ...of quantum cascade ...a surface binding technique for ... See full document
156
Fast modulation of terahertz quantum cascade lasers using graphene loaded plasmonic antennas
... external terahertz modulators have been realized by implementing two dimensional electron gas (2DEG) with a modulation speed up to 2 MHz 29 or incorporating high electron mobility transistors in a metamaterial ... See full document
17
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. ... See full document
13
Building Positive Future Orientations: The Role of Natural Mentors in the Lives of African American Girls
... The red line in Figure 3.2(f) shows that the local intensity I as the function of the thickness a of the waveguide for a < 4 µ m increases significantly with 1 / a , in qualitative accord with the behavior ... See full document
109
Distributed feedback terahertz frequency quantum cascade lasers with dual periodicity gratings
... the surface of a cone with the axis oriented along h ¼ 0 (a ¼ 90 ) with divergences of 50 (sample D) and 70 (sample E) corresponding to a m ¼ 65 and a m ¼ 55 ... See full document
5
Tunable and compact dispersion compensation of broadband THz quantum cascade laser frequency combs
... at terahertz (THz) frequencies through four-wave mixing in the cavity of a quantum cascade laser ...and quantum technology−oriented ... See full document
10
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