Controlling random lasing action
WebA waveguide-plasmonic scheme is constructed by coating the matrix of randomly distributed gold nanoisland structures with a layer of dye-doped polymer, which provides strong feedback or gain channels for the … Webrandom lasing action with the energy pumping threshold down to 0.9 mJ cm 2 and the corresponding b factor is estimated to be about 0.14. The bare films also show a long …
Controlling random lasing action
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WebApr 1, 2015 · In conclusion, magnetic nanoparticles are firstly introduced to control random laser, and the Fe 3 O 4 @SiO 2 MNPs have been proven to be suitable scatters for RLs. … WebNov 15, 2024 · Control of random lasing threshold via engineered plasmonic nanostructures. a) Metal-dielectric core-shell nanoparticles serve as robust agents …
WebMar 31, 1994 · In the course of investigating the radiative properties of a laser dye dispersed in a strongly scattering medium (a colloidal suspension of titanium dioxide particles), we have found that the... WebFilm morphology and the corresponding structural configuration can profoundly affect the optical performance, especially the random lasing action in organic–inorganic metal-halide perovskite thin films. They can be controlled in both micro- and nano-scale by manipulating different processing parameters such
WebDec 6, 2011 · We demonstrate that the random lasing wavelength of ZnO/Al2O3 nanopowders can be controlled by varying the weight fraction of Al2O3. This controllability is due to the fact that the extent of self-absorption by ZnO nanopowder can be modified by changing the photon-transport mean free path. WebJan 22, 2024 · By carefully controlling the solution processing conditions, we can determine whether random lasing occurs or not, using identical precursors. A rather special feature is that some of the films exhibit single and dual mode lasing action, which is rarely observed in random lasers. Our work fully exploits the simplicity of the solution-based ...
WebApr 29, 2024 · Therefore, a sharp linear growth of the output emission intensity provided more insight into the lasing characteristics, as depicted in the Figure 5c. Lasing action can be observed in the circular grating DFB polymer laser with a minimum threshold of 19 μ J / cm 2, which is the lowest threshold as compared to previously reported circular ...
WebSep 30, 2024 · External control of the lasing action as well as random lasing is an interesting phenomenon in recent years which can be achieved using electric filed, … sake utsuwa researchWebSep 1, 2024 · External control of the random lasing is an interesting phenomenon in recent years which can be achieved using external factors such as electric filed, temperature, magnetic field, or a combination of some of these factors. thingshanWebSep 8, 2024 · A typical random laser emits light over a broad multimode spectrum, either as a single broad peak or as a set of sharp lasing peaks. So far, the main strategies to … sake uptownWebRandom lasing action from PMMA waveguide doped with CdSe/ZnS CQDs plasmonically enhanced by Ag nanoislands. Optics & Laser Technology 2024, 131 , ... Jinxin Guo, … sake vending machine san franciscoWebSep 30, 2024 · External control of the lasing action as well as random lasing is an interesting phenomenon in recent years which can be achieved using electric filed, temperature as well as magnetic field [1,2,3].This ability to achieve controllable random lasing via external fields such as magnetic field needs efficient magnetic media or … things hamsters can eatthings halloweenhttp://www.sapienzalab.org/coral things hamilton wanted to see