The role of polymers in random lasing

Sznitko, Lech; Myśliwiec, Jarosław; Miniewicz, Andrzej

doi:10.1002/polb.23731

Cited by 64 publications

(37 citation statements)

References 119 publications

(196 reference statements)

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“…Random lasers, which are induced by the interference effect of multiply scattered light and the existence of gain materials [1][2][3][4][5], have recently attracted attention as unique light sources based on their low spatial coherence property due to the randomness [6]. However, due to the randomness, there are several issues for their applications, such as the difficulties in the control of localized mode properties, efficient light input-output, electrode formation, and electrical pumping.…”

Section: Introductionmentioning

confidence: 99%

ZnO nanorod array random lasers fabricated by a laser-induced hydrothermal synthesis

et al. 2016

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We demonstrate random lasing in ZnO nanorod array (NRA) structures fabricated by a laser-induced hydrothermal growth, which would make it possible to control structural parameters, such as diameter, length, density and so on, by adjusting the laser irradiation time and intensity. To realize low-threshold ZnO NRA random lasers, we attempt to optimize the structure by changing the laser irradiation time (growth time). From the results, we confirmed that the fabricated ZnO NRAs after CO 2 laser annealing could induce UV random lasing and their thresholds strongly depend on the growth time. Thus, we succeed to realize ZnO NRA random lasers and suggest the possibility to control the random lasing properties by adjusting the irradiated laser conditions.

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Section: Introductionmentioning

confidence: 99%

ZnO nanorod array random lasers fabricated by a laser-induced hydrothermal synthesis

et al. 2016

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“…For this reason, lasing architectures based on amorphous optical media are especially interesting in this framework. Multiple scattering is accountable, in those materials, for setting the modes of so‐called random lasers (Figure e) . Here, these modes, instead of conventional resonant cavities, might define the frequencies and directions in which photons are emitted.…”

Section: Lasing Mechanismsmentioning

confidence: 99%

Laser Systems and Networks with Organic Nanowires and Nanofibers

Matino

Persano

Camposeo

et al. 2019

Advanced Optical Materials

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The potentialities of miniaturized laser sources are still far from being fully developed. Unprecedented opportunities are generated in this field by organic nanowires and nanofibers, which can be used as building blocks of micro‐ and nanolasers in which they combine optical gain, waveguiding, and very high versatility to create nanophotonic networks. The progress in laser devices and network architectures based on optically pumped organic light‐emitting nanowires and nanofibers is here presented, with emphasis on developed active materials, fabrication technologies, lasing mechanisms, and cavity geometries, and on achieved device performance in terms of spectral tunability, excitation threshold, and resonator quality factors. Recent examples of optical coupling of different miniaturized lasers, of their application in optical sensing, and of network lasers are presented. Future directions for research are also outlined, which include the exploration of new classes of active organic or hybrid materials within nanowires, the more in‐depth characterization of the fundamental properties of these lasers, and the use of topologically defined organic nanophotonics in network science, computing, and diagnostics.

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“…Due to their easy fabrication, unique properties, and promising applications, much attention has been devoted to RLs over the past two decades . Generally, RLs are constructed based on disordered systems containing gain medium, such as solutions and polymer films containing fluorescent dyes and scattering particles . In recent years, a novel type of RL—1D random fiber laser (RFL)—has been proposed and attracted great interest .…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Investigation of the Polymer Optical Fiber Random Laser with Resonant Feedback

Chan

Cheng

et al. 2018

Advanced Optical Materials

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demonstration of RFL by inserting TiO 2 particles and rhodamine 6G dyes into the hollow core of a photonic crystal fiber, which opened the research field of RFLs. [15] Subsequently, both coherent and incoherent RFLs based on various fiber structures have been demonstrated. [16][17][18] These RFLs have several merits like low threshold, directional output, and low-cost fabrication, indicating that they are superior to other conventional RLs in some applications. [16] According to the feedback mechanism, RFLs can be generally classified into two categories: (1) RFLs based on common single mode fibers with the feedback provided by Rayleigh scattering and Raman effect, [19][20][21][22][23][24][25] (2) RFLs based on specific fibers (e.g., liquid core optical fibers, polymer optical fibers, and erbium-doped fibers) with the feedback provided by doped particles or randomly distributed Bragg gratings. [16,[26][27][28][29][30][31] For the first type of RFLs, their length are normally more than several kilometers, which limits their applications. [18] Conversely, the size of the second type of RFLs is in the centimeter scale. [26] Moreover, the properties of the second type of RFLs (e.g., shape, size, lasing wavelength, and laser threshold) could be tuned via controlling the fiber materials, scatterers, and optical gain medium. [27,28,32] As a result, the second type of RFLs can be regarded as ideal experimental systems for the investigation of random lasing with novel materials (like plasmonic materials), which have already been reported in several studies. [17,33,34] However, these studies mainly focus on experimental studies and corresponding theoretical models are still lacking to date. There is a need to find an effective numerical model to describe the lasing dynamic in the RFLs. Moreover, although RFLs have great potential in various applications, no practical application has been reported in the past studies.In the present work, we have demonstrated polymer optical fiber RLs (POFRLs) by doping TiO 2 nanoparticles and Rh640 perchlorate dyes into the core of the POFs. The optical gain in our POFRL was provided by Rh640 perchlorate dyes which are widely used organic luminescent dyes for many dye laser systems. The TiO 2 nanoparticles worked as scatterers to provide multiscattering events for light propagation and the resulting scattering strength is in the weakly scattering regime (scattering mean free path l s ≫ emission wavelength λ). Multimode and coherent random lasing was observed in our POFRLs, which 1D random fiber laser is a novel fiber-based laser, which exhibits many unique optical properties and shows great promise for various applications including speckle-free imaging. A multimode and coherent polymer optical fiber random laser (POFRL) is successfully fabricated by doping TiO 2 nanoparticles and Rh640 perchlorate dyes in the core of a polymer optical fiber (POF). The waveguide effect provided by the POF greatly increases the multiscattering events for light propagation and results in laser cavity with muc...

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The role of polymers in random lasing

Cited by 64 publications

References 119 publications

ZnO nanorod array random lasers fabricated by a laser-induced hydrothermal synthesis

ZnO nanorod array random lasers fabricated by a laser-induced hydrothermal synthesis

Laser Systems and Networks with Organic Nanowires and Nanofibers

Experimental and Theoretical Investigation of the Polymer Optical Fiber Random Laser with Resonant Feedback

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