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   Articles with "random lasing" as a keyword



Unusual Spectrally Reproducible and High Q‐Factor Random Lasing in Polycrystalline Tin Perovskite Films

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recommendations! Published in 2022 at "Advanced Materials"

DOI: 10.1002/adma.202208293

Abstract: An unusual spectrally reproducible near‐IR random lasing (RL) with no fluctuation of lasing peak wavelength is disclosed in polycrystalline films of formamidinium tin triiodide perovskite, which have been chemically stabilized against Sn2+ to Sn4+ oxidation.… read more here.

Keywords: unusual spectrally; random lasing; factor; tin ... See more keywords

Random Lasing in ZnO Nanopowders Based on Multiphoton Absorption for Ultrafast Upconversion Application

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recommendations! Published in 2019 at "ACS Applied Nano Materials"

DOI: 10.1021/acsanm.8b02300

Abstract: This study reports ultraviolet picosecond random lasing (RL) based on multiphoton absorption in zinc oxide (ZnO) nanopowders with a mean size of ∼100 nm under femtosecond optical excitation. Upconversion random lasing is achieved with an… read more here.

Keywords: random lasing; multiphoton absorption; based multiphoton; excitation ... See more keywords

Two-dimensional Wrinkle Resonators for Random Lasing in Organic Glasses

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recommendations! Published in 2020 at "Scientific Reports"

DOI: 10.1038/s41598-020-59236-4

Abstract: Random lasers consisting of slab waveguides with two-dimensional disordered wrinkling patterns that act as scattering resonators are reported. As active material 2,2′,7,7′-tetraphenyl-9,9′-spirobifluorene is used which is sandwiched between an oxidized silicon wafer and a cladding… read more here.

Keywords: wrinkle resonators; resonators random; dimensional wrinkle; two dimensional ... See more keywords
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Unprecedented random lasing in 2D organolead halide single-crystalline perovskite microrods.

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recommendations! Published in 2020 at "Nanoscale"

DOI: 10.1039/d0nr01171a

Abstract: Three-dimensional organic-inorganic hybrid halide perovskites have been demonstrated as great materials for applications in optoelectronics and photonics. However, their inherent instabilities in the presence of moisture, light, and heat may hinder their commercialization. Alternatively, emerging… read more here.

Keywords: organic inorganic; single crystalline; unprecedented random; random lasing ... See more keywords

Vertically oriented self-assembly of colloidal CdSe/CdZnS quantum wells controlled via hydrophilicity/lipophilicity balance: optical gain of quantum well stacks for amplified spontaneous emission and random lasing.

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recommendations! Published in 2023 at "Nanoscale"

DOI: 10.1039/d3nr00170a

Abstract: We propose and demonstrate vertically oriented self-assembly of colloidal quantum wells (CQWs) that allows for stacking CdSe/CdZnS core/shell CQWs in films for the purposes of amplified spontaneous emission (ASE) and random lasing. Here, a monolayer… read more here.

Keywords: quantum; self assembly; random lasing; vertically oriented ... See more keywords

Controlling the random lasing action from GaAs/AlGaAs axial heterostructure nanowire arrays.

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recommendations! Published in 2024 at "Nanoscale"

DOI: 10.1039/d4nr02734e

Abstract: Controlling the random lasing action from disordered media is important to obtain customizable lasers with unprecedented properties. In this paper, systematic investigations of random scattering based on GaAs/AlGaAs axial heterostructure nanowire (NW) arrays are presented.… read more here.

Keywords: gaas algaas; algaas axial; axial heterostructure; random lasing ... See more keywords

Polycrystalline ZnO nanorods for lasing applications

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recommendations! Published in 2019 at "Journal of Applied Physics"

DOI: 10.1063/1.5083965

Abstract: Single and double mode random lasing were observed in a polycrystalline ZnO nanorod array. The double mode random lasing showed mode competition when the mode spacing was 2.3 nm or below. Structurally, X-ray diffraction measurements confirmed… read more here.

Keywords: double mode; mode; polycrystalline zno; random lasing ... See more keywords

Vortex random lasing with tunable wavelength and orbital angular momentum

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recommendations! Published in 2024 at "Applied Physics Letters"

DOI: 10.1063/5.0189135

Abstract: Random lasing with special structured light field has broad application prospects in various fields. However, the complex spatial modes of random lasing increase the difficulty of light field regulation and limit its practical application. Here,… read more here.

Keywords: angular momentum; orbital angular; random lasing; vortex random ... See more keywords

Protein-based microlasers: continuous transition from whispering gallery mode to random lasing

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recommendations! Published in 2025 at "Journal of Physics D: Applied Physics"

DOI: 10.1088/1361-6463/ada990

Abstract: Whispering gallery mode (WGM) and random biolasers are important for bio-integration and biosensing applications due to their biocompatibility. However, these two laser types typically require different fabrication techniques, and limited research has explored transitioning between… read more here.

Keywords: random; whispering gallery; gallery mode; transition ... See more keywords
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Random lasing action from electrospun nanofibers doped with laser dyes

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recommendations! Published in 2017 at "Laser Physics"

DOI: 10.1088/1555-6611/aa555c

Abstract: We fabricated polyvinyl alcohol (PVA) nanofibers doped with Rhodamine 6G laser dyes via an electrospinning technique, which were then excited by a pulsed laser for laser emission. The laser was observed at a low threshold… read more here.

Keywords: nanofibers doped; laser; lasing action; action electrospun ... See more keywords

Experimental studies on the random lasing characteristics of carbon quantum dots

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recommendations! Published in 2025 at "Laser Physics"

DOI: 10.1088/1555-6611/ae0df5

Abstract: We present a simple yet effective method for achieving directional and coherent random lasing (RL) emission using carbon quantum dots (CQDs) as scattering elements. Through experimental demonstration, we show that a gain dye combined with… read more here.

Keywords: quantum dots; carbon quantum; experimental studies; random lasing ... See more keywords