Simultaneously Enhancing Photoluminescence Quantum Efficiency and Optical Gain of Polyfluorene via Backbone Intercalation of 2,5‐Dimethyl‐1,4‐Phenylene
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DOI: 10.1002/adom.202000187
Abstract: Simultaneous enhancement of photoluminescence quantum efficiency (PLQE) and optical gain in semiconducting polymer films is desirable for optically‐ or electrically‐pumped organic solid‐state lasers. In this work, a simple self‐dilution effect is achieved by introducing a… read more here.
Keywords: photoluminescence quantum; quantum efficiency; gain; optical gain ... See more keywords
Optical Gain of Lead Halide Perovskites Measured via the Variable Stripe Length Method: What We Can Learn and How to Avoid Pitfalls
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DOI: 10.1002/adom.202001773
Abstract: In the search for novel photonic materials, the recent focus on metal halide perovskites (MHPs) has revealed their promise to become groundbreaking low‐threshold, tunable coherent light sources. An accurate determination of the optical gain coefficient… read more here.
Keywords: variable stripe; methodology; halide perovskites; method ... See more keywords
Concurrent Optical Gain Optimization and Electrical Tuning in Novel Oligomer:Polymer Blends with Yellow‐Green Laser Emission
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DOI: 10.1002/advs.201801455
Abstract: Abstract Electrically pumped organic lasing requires the integration of electrodes contact into the laser cavity in an organic light‐emitting diode (OLED) or organic field effect transistor configuration to enable charge injection. Efficient and balanced carrier… read more here.
Keywords: gain; concurrent optical; gain optimization; optimization electrical ... See more keywords
The Optical Gain of a Si-Based Lattice-Matched Si0.15Ge0.621Sn0.229/Si0.637Ge0.018Sn0.345 MQW Laser
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Russian Laser Research"
DOI: 10.1007/s10946-017-9621-0
Abstract: We study the optical-gain characteristics of a Si-based MQW laser, in which the active region has 20 Si0.15Ge0.621Sn0.229 quantum wells separated by 20 Si0.637Ge0.018Sn0.345 barriers. We reach a maximum optical gain of 2300 cm−1 with… read more here.
Keywords: gain; 15ge0 621sn0; 621sn0 229; mqw laser ... See more keywords
Advanced optical gain materials keep on giving
Sign Up to like & getrecommendations! Published in 2020 at "Science China Materials"
DOI: 10.1007/s40843-020-1450-6
Abstract: In the past few decades, there has been a long-standing pursuit to exploring emergent materials with robust optical gain and superior light-matter interacting properties for the development of photonic and optoelectronic devices including but not… read more here.
Keywords: gain materials; advanced optical; light matter; gain ... See more keywords
Uniaxial strain induced optical properties of complex type-II InGaAs/InAs/GaAsSb nano-scale heterostructure
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DOI: 10.1016/j.ijleo.2017.08.045
Abstract: Abstract Semiconducting heterostructures offer an extra degree of flexibility in terms of tuning of optical gain and transition energies or wavelengths. Modifications in the wave functions and alterations in optical transitions in binary and ternary… read more here.
Keywords: strain along; type ingaas; uniaxial strain; strain ... See more keywords
Optical gain characteristics of a novel InAlAs/InGaAs/GaAsSb type-II nano- heterostructure
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DOI: 10.1016/j.ijleo.2019.01.095
Abstract: Abstract The key objective of this research paper is to design a type-II nano-heterostructure which could emit the radiations of the wavelength ˜1.55 μm. Here, we have proposed and designed a novel type-II “W” shaped InAlAs/InGaAs/GaAsSb… read more here.
Keywords: heterostructure; optical gain; gain characteristics; type nano ... See more keywords
Structural, spectroscopic and optical gain of Nd3+ doped fluorophosphate glasses for solid state laser application
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Luminescence"
DOI: 10.1016/j.jlumin.2019.116738
Abstract: Abstract Nd3+ doped fluorophosphate glasses (PANCaFN) with chemical composition of (50-x) P2O5–12Na2O–8Al2O3–10CaO–10KF–10CaF2-xNd2O3 (where x = 0, 0.5, 1.0, 1.5 and 2.0 mol%) have been successfully prepared by melt-quenching method and characterized by several techniques. The optical absorption measurements… read more here.
Keywords: solid state; doped fluorophosphate; gain; nd3 doped ... See more keywords
Unveiling photophysical and photonic phenomena by means of optical gain measurements in waveguides and solutions
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DOI: 10.1016/j.optlastec.2020.106766
Abstract: Abstract The increasing number of solution-processed laser compounds that can be implemented as low-cost, flexible, and/or integrated devices, makes necessary the development of reliable methods to delineate all their amplifying signatures and thus to open… read more here.
Keywords: photonic phenomena; means optical; photophysical photonic; unveiling photophysical ... See more keywords
Investigating the effects of capping layer on optical gain of nitride based semiconductor nanostructure lasers
Sign Up to like & getrecommendations! Published in 2017 at "Optical Materials"
DOI: 10.1016/j.optmat.2017.02.006
Abstract: Abstract In this study, the effects of GaN capping layer on the behaviour of AlGaN/GaN nanostructure based laser is considered. We have employed the self-consistent solution of Poisson and Schrodinger equations for calculation of the… read more here.
Keywords: capping layer; investigating effects; layer optical; optical gain ... See more keywords
Amplified spontaneous emission and optical gain characteristics of sexithiophene single crystals
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DOI: 10.1016/j.optmat.2020.109695
Abstract: Abstract This paper reports optical properties of a single crystal thiophene/phenylene co-polymer 5,5ʺʺ'-diphenyl-2,2′:5′,2ʺ:5ʺ,2ʺ′:5ʺ′,2ʺʺ:5ʺʺ, 2ʺʺ'-sexithiophene (P6T). The P6T crystals demonstrate high charge carriers’ mobility and large photoluminescence quantum efficiency (PLQE). Herein, the stimulated emission of P6T… read more here.
Keywords: spontaneous emission; p6t; cm2; amplified spontaneous ... See more keywords