Results 181 to 190 of about 1,856 (216)
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Simulation of a metal nano-strip grating distributed Bragg reflector (DBR) Laser
SPIE Proceedings, 2014The edge-emitting distributed Bragg reflector (DBR) laser with a metal nano-strip grating is proposed. It achieves a high reflectivity with a much shorter grating length of 200μm due to the high refractive index contrast of the metal and the semiconductor.
Lanxin Deng, Qingyi Guo, Jianwei Mu
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A 1.65 μm three-section distributed Bragg reflector (DBR) laser for CH4 gas sensors
Journal of Semiconductors, 2013 Bin Niu, Hongyan Yu, Liqiang Yu
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Deep etched distributed Bragg reflector (DBR) InP/AlGaInP quantum dot lasers
SPIE Proceedings, 2011By optimising an InP/AlGaInP quantum dot size distribution a broad and relatively flat topped gain spectra can be achieved. Using the segmented contact method we measure the optical gain spectra and use this to explain the range of lasing wavelengths that can obtained by varying the grating structure of deep etched DBR lasers.
S. Shutts +4 more
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Eight-wavelength distributed-Bragg-reflector (DBR) laser array transmitter for WDM applications
SPIE Proceedings, 1995We report on the design, growth, fabrication and characterization of monolithic wavelength division multiplexed (WDM) laser array transmitter and receiver chips produced by the Canadian Solid State Optoelectronics Consortium. The transmitter chip includes multiple, discrete wavelength, distributed Bragg reflector (DBR) laser diodes monolithically ...
Mahmoud Fallahi +10 more
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Optical Fiber Technology, 2013
Abstract The structure of an active Erbium-Doped Distributed Bragg Reflector (ED-DBR) and a Fiber Bragg Grating (ED-FBG) is simulated using a rigorous transmission line model and an approximate version of the coupled-mode theory, respectively. The basic calculation steps and assumptions of the proposed simulation models are described and the key ...
Nikolaos A. Stathopoulos +4 more
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Abstract The structure of an active Erbium-Doped Distributed Bragg Reflector (ED-DBR) and a Fiber Bragg Grating (ED-FBG) is simulated using a rigorous transmission line model and an approximate version of the coupled-mode theory, respectively. The basic calculation steps and assumptions of the proposed simulation models are described and the key ...
Nikolaos A. Stathopoulos +4 more
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Proceedings of the nanoGe Spring Meeting 2022, 2022
The introduction of non-fullerene acceptors (NFA) has provided several recent record efficiencies in organic photovoltaic (OPV) cells, reaching now above 18%1 for single-junction devices. While these developments have provided a strong boost to the OPV field, more efforts have to be devoted to their application, such as their use in windows to lower ...
Ahmadpour, Mehrad +2 more
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The introduction of non-fullerene acceptors (NFA) has provided several recent record efficiencies in organic photovoltaic (OPV) cells, reaching now above 18%1 for single-junction devices. While these developments have provided a strong boost to the OPV field, more efforts have to be devoted to their application, such as their use in windows to lower ...
Ahmadpour, Mehrad +2 more
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Narrow spectral linewidth 1.5 mu m GaInAsP/InP distributed Bragg reflector (DBR) lasers
IEEE Journal of Quantum Electronics, 1989The spectral linewidth of distributed Bragg reflector (DBR) lasers is discussed. The narrowest linewidth of 3.2 MHz was obtained at P=1.5 mW. It was found that narrow spectral linewidths can be obtained constantly for the DBR lasers with long and low optical loss corrugation regions, and with a small coupling coefficient. These results are explained by
M. Takahashi +5 more
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IET Irish Signals and Systems Conference (ISSC 2012), 2012
The paper reports some initial findings in the area of analysis and characterisation of fast switching lasers, specifically Sampled Grating Distributed Bragg Reflector (SG-DBR) lasers. The ability to track the phase of a laser in the moments immediately following a switching event is an important building block in the development of an efficient ...
J. Mountjoy, B. Cardiff, A.D. Fagan
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The paper reports some initial findings in the area of analysis and characterisation of fast switching lasers, specifically Sampled Grating Distributed Bragg Reflector (SG-DBR) lasers. The ability to track the phase of a laser in the moments immediately following a switching event is an important building block in the development of an efficient ...
J. Mountjoy, B. Cardiff, A.D. Fagan
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2019 IEEE 46th Photovoltaic Specialists Conference (PVSC), 2019
The authors report on the metal-organic vapor phase epitaxial (MOVPE) growth of all III-phosphide (AlInPInGaP) Distributed Bragg Reflectors (DBRs) on large GaAs substrates and their application for multijunction (MJ) solar cell device. DBRs with peak reflectance of 890 nm at GaAs bandgap energy were grown on top of inverted GaAs single junctions.
Kamran Forghani +3 more
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The authors report on the metal-organic vapor phase epitaxial (MOVPE) growth of all III-phosphide (AlInPInGaP) Distributed Bragg Reflectors (DBRs) on large GaAs substrates and their application for multijunction (MJ) solar cell device. DBRs with peak reflectance of 890 nm at GaAs bandgap energy were grown on top of inverted GaAs single junctions.
Kamran Forghani +3 more
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Nanotechnology, 2021
Abstract Unlike the traditional fabrication of distributed Bragg reflector (DBR) structure via atomic layer deposition or spin-coating, here the 1–6 pairs of magnesium fluoride (MgF 2 )/zinc sulfide (ZnS) alternative dielectric layers were grown via thermal evaporation.
Yanqiong Zheng +6 more
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Abstract Unlike the traditional fabrication of distributed Bragg reflector (DBR) structure via atomic layer deposition or spin-coating, here the 1–6 pairs of magnesium fluoride (MgF 2 )/zinc sulfide (ZnS) alternative dielectric layers were grown via thermal evaporation.
Yanqiong Zheng +6 more
openaire +2 more sources