Transiently stimulated second-harmonic generation from silicon nanogratings
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Authors
An, Yong Q.
Diebold, Alain C.
Issue Date
2017-11-29
Type
Article
Language
Keywords
nanotechnology , silicon nanogratings , second-harmonic (SH) light , nanoscale measurement , transiently stimulated SHG , high-harmonic generation , nonlinear optics , photonics
Alternative Title
Physical Review B
Abstract
We observe that second-harmonic (SH) light generated by a femtosecond probe pulse from Si nanograting surfaces can be enhanced by a correlating pump pulse. Time-resolved anisotropy analysis shows that the enhancement arises from transient stimulation by the pump because it polarizes the periodically distributed charge from the probe photoinjection. In addition, dipole and quadrupole SH components are stimulated differently depending on the pump polarization. This effect reveals ultrafast SH dynamics in centrosymmetric materials and provides guidance for measuring nanoscale features.
Description
Citation
An, Y. Q., & Diebold, A. C. (2017). Transiently stimulated second-harmonic generation from silicon nanogratings. Physical Review B, 96(20), 201306. doi:10.1103/PhysRevB.96.201306
Publisher
American Physical Society
License
Journal
Volume
Issue
PubMed ID
DOI
ISSN
2469-9950