Dual-Wavelength Switchable Vibronic Lasing in Single-Crystal Organic Microdisks

Haiyun Dong, Chunhuan Zhang, Xianqing Lin, Zhonghao Zhou, Jiannian Yao, Yong Sheng Zhao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)

Abstract

Wavelength switchable micro/nanoscale laser is essential to construct various ultracompact photonic devices. However, traditional semiconductors as the gain media generally provide only monochromatic laser output due to their continuous energy band structures. For luminescent conjugated molecules, the broad emission band usually contains a series of vibronic peaks, which is very helpful for extending the lasing spectrum to several different wavelengths. Here we propose a novel strategy to realize wavelength switchable lasers based on the controlled competition of dual-wavelength vibronic lasing in single-component organic microcrystals. The vibrationally structured fluorescence property of the single-crystal organic microdisks brings dual-wavelength lasing at different vibronic bands. Their relative optical gain intensity was modulated by controlling the population on the certain vibronic level of the ground state with varied temperature, which consequently enabled the reversible switching of the dual-wavelength vibronic lasing. The results point out a promising route to the rational design of miniaturized lasers and other photonic elements with desired performances.

Original languageEnglish
Pages (from-to)91-96
Number of pages6
JournalNano Letters
Volume17
Issue number1
DOIs
Publication statusPublished - 11 Jan 2017
Externally publishedYes

Keywords

  • Organic nanomaterial
  • WGM laser
  • laser switch
  • nanophotonic material
  • organic microlaser

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