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Issue 16, 2019
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A broadban-tunable photonic bandgap and thermally convertible laser with an ultra-low lasing threshold from a refilled chiral polymer template

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Abstract

This study demonstrates a broadband-tunable photonic bandgap (PBG) and thermally convertible laser with an ultra-low lasing threshold based on a gradient-pitched cholesteric liquid crystal (CLC) polymer template. The lowest energy threshold of the laser is 16 nJ per pulse under a pumped diameter of ca. 250 μm (i.e., 0.33 μJ per pulse per mm2), a value that is superior to those of other band-edge lasers based on most dye/quantum-dot-doped CLC systems. Owing to its multiple advantages, such as high stability, ultra-low lasing threshold, wide-band and linear spatial PBG-tunability, and lasing-mode convertibility, the CLC template device can be potentially used for photonics and display applications.

Graphical abstract: A broadban-tunable photonic bandgap and thermally convertible laser with an ultra-low lasing threshold from a refilled chiral polymer template

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Publication details

The article was received on 11 Jan 2019, accepted on 18 Mar 2019 and first published on 18 Mar 2019


Article type: Paper
DOI: 10.1039/C9TC00194H
Citation: J. Mater. Chem. C, 2019,7, 4740-4747

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    A broadban-tunable photonic bandgap and thermally convertible laser with an ultra-low lasing threshold from a refilled chiral polymer template

    J. Lin, H. Lin, G. Wei, Y. Chuang, L. Chen, T. Mo and C. Lee, J. Mater. Chem. C, 2019, 7, 4740
    DOI: 10.1039/C9TC00194H

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