Bilayer Bismuth Selenide nanoplatelets based saturable absorber for ultra-short pulse generation (Invited)

Yanhua Xu, Hanhan Xie, Guobao Jiang, Lili Miao, Ke Wang, Siying Tang, Xuefeng Yu, Han Zhang, Qiaoliang Bao

Research output: Contribution to journalArticleResearchpeer-review

11 Citations (Scopus)

Abstract

Based on an efficient and bottom-up synthesis technique, Bismuth Selenide (Bi2Se3) nanoplatelets with uniform morphology and average thickness down to 3–7 nm had been fabricated. Its nonlinear absorption property under high power excitation had been well characterized by our Z-scan measurement system at different illumination wavelengths, and we found that the as-fabricated bi-layer Bi2Se3 nanoplatelets show unique nonlinear optical responses, that is, with a saturable optical intensity of 32 GW/cm2 (resp. 3.7 MW/cm2) and a modulation depth of 88% (resp. 36%) at 800 nm (resp. 1565 nm). By implementing its saturable absorption property, we designed an optical saturable absorber device based on bilayer Bi2Se3 nanoplatelets through deposited them onto the end-facet of optical fiber. The as-fabricated optical saturable absorber device allows for the generation of mode-locking pulses at 1571 nm with pulse duration of 579 fs and a repetition rate of 12.54 MHz at a pump power of 160 mW. The method on fabricating ultrathin Bi2Se3 nanoplatelets may pave a new way to massive production of large-area topological insulator thin films that can be used in two-dimensional layered materials related photonics device.

Original languageEnglish
Pages (from-to)55-60
Number of pages6
JournalOptics Communications
Volume395
DOIs
Publication statusPublished - 15 Jul 2017
Externally publishedYes

Keywords

  • BiSe
  • Bilayer
  • Mode-locked fiber laser
  • Saturable absorption
  • Z-scan

Cite this

Xu, Yanhua ; Xie, Hanhan ; Jiang, Guobao ; Miao, Lili ; Wang, Ke ; Tang, Siying ; Yu, Xuefeng ; Zhang, Han ; Bao, Qiaoliang. / Bilayer Bismuth Selenide nanoplatelets based saturable absorber for ultra-short pulse generation (Invited). In: Optics Communications. 2017 ; Vol. 395. pp. 55-60.
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Bilayer Bismuth Selenide nanoplatelets based saturable absorber for ultra-short pulse generation (Invited). / Xu, Yanhua; Xie, Hanhan; Jiang, Guobao; Miao, Lili; Wang, Ke; Tang, Siying; Yu, Xuefeng; Zhang, Han; Bao, Qiaoliang.

In: Optics Communications, Vol. 395, 15.07.2017, p. 55-60.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Xu, Yanhua

AU - Xie, Hanhan

AU - Jiang, Guobao

AU - Miao, Lili

AU - Wang, Ke

AU - Tang, Siying

AU - Yu, Xuefeng

AU - Zhang, Han

AU - Bao, Qiaoliang

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