冰中强氢键和弱氢键对受激拉曼散射的影响。

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

作者信息

Li Tianyu, Li Fangfang, Li Zhanlong, Sun Chenglin, Tong Junhong, Fang Wenhui, Men Zhiwei

出版信息

Opt Lett. 2016 Mar 15;41(6):1297-300. doi: 10.1364/OL.41.001297.

DOI:10.1364/OL.41.001297

Abstract

Stimulated Raman scattering (SRS) in liquid water and ice Ih using Nd:YAG laser is investigated. The spectrum of backward SRS (BSRS) in water is acquired. The spectrum shows an unexpected SRS peak at around 3453 cm(-1) besides the normal peak, which is similar to the spontaneous Raman spectrum of ice VII. The ice VII phase will be formed by laser-induced shock compression in liquid water. Simultaneously, unlike the spontaneous Raman spectrum, the pre-resonance SRS of ice Ih at around 3110 and 3210 cm(-1) is observed. The Raman peaks appeared in liquid water and ice Ih are attributed to the effect of strong and weak hydrogen bonds (H bonds), which should be ubiquitous in other ice phases.

摘要

研究了使用Nd:YAG激光在液态水和冰Ih中产生的受激拉曼散射（SRS）。获得了水中后向SRS（BSRS）的光谱。该光谱除了正常峰外，在约3453 cm⁻¹处还显示出一个意外的SRS峰，这与冰VII的自发拉曼光谱相似。冰VII相将通过液态水中激光诱导的冲击压缩形成。同时，与自发拉曼光谱不同，在约3110和3210 cm⁻¹处观察到了冰Ih的预共振SRS。在液态水和冰Ih中出现的拉曼峰归因于强氢键和弱氢键（H键）的作用，这在其他冰相中应该普遍存在。