4.8 Article

Resonantly Increased Optical Frequency Conversion in Atomically Thin Black Phosphorus

Journal

ADVANCED MATERIALS
Volume 28, Issue 48, Pages 10693-+

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201603119

Keywords

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Funding

  1. NRF-CRP grant [R-144-000-295-281]
  2. Sao Paulo Research Foundation (FAPESP) [2012/50259-8, 2015/11779-4]
  3. Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore
  4. Conselho Nacional de Desenvolvimento Cientfico e Tecnolgico (CNPq)
  5. Fundo Mackenzie de Pesquisa
  6. Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [15/11779-4] Funding Source: FAPESP

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Optical frequency conversion via the nonlinear effect of third harmonic generation is shown to be resonantly enhanced in few-layer black phosphorus. This feature is believed to be a consequence of exciton-related resonance, as the enhancement is strongly correlated with the observation of exciton-recombination photoluminescence. Few-layer thicknesses are obtained both via mechanical exfoliation and laser thinning.

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