Random lasing in porous scattering medium

Yashchuk, Vasil P.; Prygodiuk, O.A.; Koreniuk, V. V.; Tikhonov, E. A.; Bezrodny, V.

doi:10.1007/s00340-008-3118-z

Cited by 15 publications

(6 citation statements)

References 7 publications

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“…11 Moreover, in photonic amorphous structures, the iridescent effect of 3DOM structures can be eliminated, and a stable, angleindependent PBG can be realized. This leads to many interesting properties such as light localization, 12 structural coloring, 13 random lasing, 14 which have been reported recently.…”

Section: Introductionmentioning

confidence: 97%

Fabrication of ZnO photonic amorphous diamond nanostructure from parrot feathers for modulated photoluminescence properties

et al. 2011

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A ZnO photonic amorphous diamond nanostructure was successfully synthesised using a feather barb of the Rosy-Faced Lovebird as supporting template via a facile sol-gel process. Different from ordered structures, an isotropic PBG around 500 nm was evidenced from reflectance spectra and an optical metallurgical microscopy image, which overlaps with the visible emission peak of ZnO. As a result, the inhibition of visible emission inside the PBG and the enhancement of UV emission at the PBG edges have both been observed, which is independent from the incident angle. Moreover, the rapid thermal annealing can also help improve the crystallinity of ZnO and raise the UV/visible emission ratio without affecting the structure. These results can be very useful for the study of the modification of the optical emission properties of ZnO and other semiconductor materials as well as research on ZnO random lasing.

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Section: Introductionmentioning

confidence: 97%

Fabrication of ZnO photonic amorphous diamond nanostructure from parrot feathers for modulated photoluminescence properties

et al. 2011

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“…11,12,22,23 However, ordinary random laser has some drawbacks. 24 The incident efficiency of excitation light is rather decreased, owing to surface reection, when the dispersion concentration of scatterers is high in a random medium. This brings about the limit to reduce I th .…”

Section: Introductionmentioning

confidence: 99%

“…To avoid such a problem, it is rationally effective to adopt a random medium with porous structure as a scatterer. [24][25][26] An optical path length is extended in a porous structure, and then, the excitation volume of the optical amplifying medium is also enlarged. As a result, the optical path length will be repeatedly extended further.…”

Section: Introductionmentioning

confidence: 99%

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Random laser oscillation from an organic fluorescent dye loaded inside a porous zirconia medium

et al. 2021

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“…In this context, the deliberate formation of microbubbles or sub‐millimeter air pores inside a disordered medium can lengthen the effective path length of scattered photons, thereby promoting the photon multiplication for achieving RL emission. [ 14 ] Also, nano‐microbubbles can be used as a biocompatible surface plasmon amplification by stimulated emission of radiation (SPASER) to generate superbright stimulated emission directly inside living cells and animal tissues. [ 15 ] However, the creation of microbubbles inside a gain medium is an experimentally tedious job.…”

Section: Introductionmentioning

confidence: 99%

Optically Transparent Graphene Flakes as Nanogenerator of Microbubbles for Random Lasing in Weakly Scattering Regime

Pramanik

Biswas

Dey

et al. 2021

Advanced Photonics Research

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The minimization of photon loss is one of the significant challenges in designing efficient random lasers (RLs). Herein, the demonstration of a 4‐(dicyanomethylene)‐2‐methyl‐6‐(4‐dimethylaminostyryl)‐4H‐pyran (DCM) dye‐based RL is made by the employment of an innovative adaptive feedback mechanism through the use of a fundamental phenomenon of total internal reflection of light in the microbubbles, generated photothermally in the presence of graphene flakes (GFs). Interestingly, here, GFs have acted simultaneously as passive scatterer and thermocatalyst for in situ generation of microbubbles in the liquid suspension of dye molecules. It is demonstrated by a simple pump‐probe photography experiment that during RL emission, the transport of photons is occurring via weak scattering in GFs followed by total internal reflection on microbubbles. Thus, RL emission at 638.4 nm is achieved with a low lasing threshold, linewidth, and moderately high quality factor of 84 W cm−2, 2 nm, and 1127, respectively. The performances of GFs in RL generation are found to be superior in comparison with those of spherical TiO2 and Ag nanoparticles. The strategy is a contemporary approach for applying a 2D material as a nanogenerator of microbubbles to achieve improved RL emission in the weakly scattering regime using an adaptive feedback approach.

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Random lasing in porous scattering medium

Cited by 15 publications

References 7 publications

Fabrication of ZnO photonic amorphous diamond nanostructure from parrot feathers for modulated photoluminescence properties

Fabrication of ZnO photonic amorphous diamond nanostructure from parrot feathers for modulated photoluminescence properties

Random laser oscillation from an organic fluorescent dye loaded inside a porous zirconia medium

Optically Transparent Graphene Flakes as Nanogenerator of Microbubbles for Random Lasing in Weakly Scattering Regime

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