Resonantly Increased Optical Frequency Conversion in Atomically Thin Black Phosphorus.
basic_science · Level V
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- Record sourced from PubMed, PMID 27753445.
- Also identified by DOI 10.1002/adma.201603119.
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Abstract
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.