Tunable multi-wavelength polymer laser based on a triangular-lattice photonic crystal structure

Huang, Wenbin; Pu, Donglin; Qiao, Wen; Wan, Wenqiang; Liu, Yanhua; Yan, Yunfei; Wu, Shaolong; Chen, Linsen

doi:10.1088/0022-3727/49/33/335103

Cited by 10 publications

(8 citation statements)

References 24 publications

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“…Polymer lasers have attracted broad attention in recent years due to the additional degree of freedom they afford in the development of versatile light sources [1,2,3,4,5,6]. Multi-wavelength, distributed-feedback (DFB) polymer lasers are achieved in various cavities, including cascaded cavities [7,8,9,10], arrays [11,12], and compound cavities [13,14,15,16]. Generally speaking, scattering is detrimental to laser action because it induces loss to the DFB polymer lasers.…”

Section: Introductionmentioning

confidence: 99%

Polymer Lasing in a Periodic-Random Compound Cavity

Zhai

et al. 2018

Polymers

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Simultaneous distributed feedback (DFB) lasing and linear polarized random lasing are observed in a compound cavity, which consists of a grating cavity and a random cavity. The grating cavity is fabricated by interference lithography. A light-emitting polymer doped with silver nanoparticles is spin-coated on the grating, forming a random cavity. DFB lasing and random lasing occur when the periodic-random compound cavity is optically pumped. The directionality and polarization of the random laser are modified by the grating structure. These results can potentially be used to design integrated laser sources.

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Section: Introductionmentioning

confidence: 99%

Polymer Lasing in a Periodic-Random Compound Cavity

Zhai

et al. 2018

Polymers

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“…K -point lasing or condensation in radiatively (longrange) coupled hexagonal/triangular lattices has been studied in photonic crystal [35][36][37] and excitonpolariton [38] systems. In those works, however, the polarization properties of the output light were not analyzed.…”

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confidence: 99%

Lasing at K Points of a Honeycomb Plasmonic Lattice

et al. 2019

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We study lasing at the high-symmetry points of the Brillouin zone in a honeycomb plasmonic lattice. We use symmetry arguments to define singlet and doublet modes at the K -points of the reciprocal space. We experimentally demonstrate lasing at the K -points that is based on plasmonic lattice modes and two-dimensional feedback. By comparing polarization properties to T -matrix simulations, we identify the lasing mode as one of the singlets with an energy minimum at the Kpoint enabling feedback. Our results offer prospects for studies of topological lasing in radiatively coupled systems.

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“…To date, organic semiconductors and colloidal quantum dots have employed various approaches to provide continuous tunability, such as wedge-shaped layer structures, 31,32 chirped cavities, 33−35 flexible substrates, 36−38 and temperature control. 39 However, these approaches have often failed to fully utilize the gain bandwidth of the amplifying medium, limiting the precise and fine control of the lasing emission and tuning over a range much narrower (∼10 nm or 50 meV) than their optical gain bandwidth due to mechanical instability or another limitation of the cavity geometry. As perovskite materials have already proven to be a promising coherent light source, realization of continuous and widely tunable lasing emission from perovskite thin films is useful for solid-state lighting, display, optical communication, integrated circuits, and sensing applications.…”

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confidence: 99%

Tuning Laser Threshold within the Large Optical Gain Bandwidth of Halide Perovskite Thin Films

2021

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Metal halide perovskite semiconductors show considerable promise as an efficient coherent light source, but the extent of their spectral tunability and optical gain bandwidth have not been established. Here, we demonstrate continuously tunable single-mode lasing from halide perovskite thin films over a wide spectral range (758–804 nm for CH3NH3PbI3, 653–684 nm for Cs0.4(CH3NH3)0.6Pb(Br0.4I0.6)3, and 520–542 nm for CsPbBr3) at room temperature for the first time. The large optical gain bandwidth (∼90 meV) and high modal gain coefficient (533 cm–1) are key enabling factors for this achievement. Period-varying chirped Bragg gratings utilized for optical feedback allow fine-tuning of the lasing output, with a minimum spectral tuning spacing, Δλlasing ∼ 1.4 nm. This precise tuning control allows us to obtain the lowest possible lasing threshold throughout the gain bandwidth, useful for designing highly efficient electrically pumped lasers.

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Tunable multi-wavelength polymer laser based on a triangular-lattice photonic crystal structure

Cited by 10 publications

References 24 publications

Polymer Lasing in a Periodic-Random Compound Cavity

Polymer Lasing in a Periodic-Random Compound Cavity

Lasing at K Points of a Honeycomb Plasmonic Lattice

Tuning Laser Threshold within the Large Optical Gain Bandwidth of Halide Perovskite Thin Films

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