发明名称 |
Device and method for stimulated Raman detection |
摘要 |
According to one aspect, the invention relates to a device for detecting a resonant non-linear optical signal of Stimulated Raman Scattering (SRS) type induced in a sample. The device comprises electro-optical means for making interact in the sample, at a first modulation frequency, trains of light pulses of angular frequencies ω1 and ω2 and, at a second modulation frequency, trains of light pulses of angular frequencies ω2 and ω3, such that ω2−ω1=ω3−ω2=ΩR where ΩR is a molecular vibrational resonant angular frequency of the sample. Moreover, the device comprises means for synchronous detection at the first and second modulation frequencies of non-linear optical signals resulting from the interaction of the light pulses in the sample, and electronic processing means making it possible to obtain, from electronic signals resulting from the synchronous detection, a signal characterizing the molecular vibrational resonance of the sample. |
申请公布号 |
US9494522(B2) |
申请公布日期 |
2016.11.15 |
申请号 |
US201414780003 |
申请日期 |
2014.03.25 |
申请人 |
Université Aix-Marseille;Centre National de la Recherche Scientifique |
发明人 |
Berto Pascal;Andresen Esben;Rigneault Hervé |
分类号 |
G01J3/44;G01N21/65 |
主分类号 |
G01J3/44 |
代理机构 |
Osha Liang LLP |
代理人 |
Osha Liang LLP |
主权项 |
1. A device for detecting a resonant non-linear optical signal of Stimulated Raman Scattering (SRS) type induced in a sample, the device comprising:
electro-optical means for making interact in the sample, at a first modulation frequency, trains of light pulses of angular frequencies ω1 and ω2 and, at a second modulation frequency, trains of light pulses of angular frequencies ω2 and ω3, such that ω2−ω1=ω3−ω2=ΩR where ΩR is a molecular vibrational resonant angular frequency of the sample; means for synchronous detection at the first and second modulation frequencies of non-linear optical signals resulting from the interaction of the light pulses in the sample; and electronic processing means making it possible to obtain, from electronic signals resulting from the synchronous detection, a signal characterizing the molecular vibrational resonance of the sample. |
地址 |
Marseilles FR |