Abstract

Stimulated Raman scattering (SRS) of silicon quantum dots (Si QD) water solutions of different sizes (2 and 5 nm) are investigated using Nd:YAG laser. Since strong and weak hydrogen bonds are formed by the charge transfer between water molecules and Si QDs, two SRS peaks of OH stretching vibrations of Si QDs solutions are observed in the forward direction. Simultaneously, characteristic feature peaks related to the interaction between OH groups and excess electrons are obtained in the backward SRS of 2 nm Si QDs solutions. The excess electrons induce a strong electrostatic field, leading to the transformation from water to an ice-VIII structure.

© 2019 Optical Society of America

Influence of strong and weak hydrogen bonds in ices on stimulated Raman scattering

Tianyu Li, Fangfang Li, Zhanlong Li, Chenglin Sun, Junhong Tong, Wenhui Fang, and Zhiwei Men
Opt. Lett. 41(6) 1297-1300 (2016)

Dynamic high pressure induced strong and weak hydrogen bonds enhanced by pre-resonance stimulated Raman scattering in liquid water

Shenghan Wang, Wenhui Fang, Fabing Li, Nan Gong, Zhanlong Li, Zuowei Li, Chenglin Sun, and Zhiwei Men
Opt. Express 25(25) 31670-31677 (2017)

Nanoshock wave resonance enhancement on stimulated Raman scattering of H₂O₂ in liquid water

Zhanlong Li, Hongdong Li, Wenhui Fang, Shenghan Wang, Chenglin Sun, and Zhiwei Men
Opt. Lett. 40(21) 5023-5025 (2015)

Pre-resonance-stimulated Raman scattering for water bilayer structure on laser-induced plasma bubble surface

Zhanlong Li, Hongdong Li, Wenhui Fang, Shenghan Wang, Chenglin Sun, Zuowei Li, and Zhiwei Men
Opt. Lett. 40(14) 3253-3255 (2015)

Hydrated-electron resonance enhancement O–H stretching vibration of water hexamer at air–water interface

Zhiwei Men, Wenhui Fang, Zuowei Li, Chenglin Sun, Zhanlong Li, and Xiaojun Wang
Opt. Lett. 40(7) 1434-1437 (2015)