Resonantly Increased Optical Frequency Conversion in Atomically Thin Black Phosphorus
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- 作者：Manuel J. L. F. Rodrigues ; Christiano J. S. de Matos ; Yi Wei Ho ; Hé ; lder Peixoto ; Rafael E. P. de Oliveira ; Hsin-Yu Wu ; Antonio H. Castro Neto and José ; Viana-Gomes
- 刊名：Advanced Materials
- 出版年：2016
- 出版时间：December 28, 2016
- 年：2016
- 卷：28
- 期：48
- 页码：10693-10700
- 全文大小：1611K
- ISSN：1521-4095
文摘
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.