Multi-wavelength enhancement of silicon Raman scattering by nanoscale laser surface ablation

Abstract : In this paper, we produce nanoholes on a silicon surface by laser ablation. Those nanoholes lead to a yield enhancement of light-matter interaction. Performing Raman spectroscopy on silicon, an enhancement of its main Raman mode is observed: it is twice higher with the nanoholes compared to a flat surface. Such a feature appears whatever the excitation wavelength (488, 514.5 and 632.8 nm) and the laser power, revealing a broad band light-matter interaction enhancement. In addition, no change in the position and shape of the main Raman mode of silicon is observed, suggesting that no structural damages are induced by laser ablation. These results clearly demonstrate the potentiality of such nanostructures for the further development of silicon photonics.
Complete list of metadatas

Cited literature [32 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02266156
Contributor : Alexandre Merlen <>
Submitted on : Tuesday, August 13, 2019 - 2:11:01 PM
Last modification on : Wednesday, August 14, 2019 - 1:17:43 AM

File

Multi-wavelength Enhancement o...
Files produced by the author(s)

Identifiers

Citation

A. Merlen, A. Sangar, P. Torchio, K Deepak, D. Grojo, et al.. Multi-wavelength enhancement of silicon Raman scattering by nanoscale laser surface ablation. Applied Surface Science, Elsevier, 2013, ⟨10.1016/j.apsusc.2013.07.131⟩. ⟨hal-02266156⟩

Share

Metrics

Record views

81

Files downloads

4