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Time-resolved coherent Raman spectroscopy by high-speed pump-probe delay scanning
被引:19
作者:
Domingue, S. R.
[1
]
Winters, D. G.
[1
]
Bartels, R. A.
[1
,2
]
机构:
[1] Colorado State Univ, Dept Elect & Comp Engn, Ft Collins, CO 80523 USA
[2] Colorado State Univ, Sch Biomed Engn, Ft Collins, CO 80523 USA
关键词:
SCATTERING;
GENERATION;
D O I:
10.1364/OL.39.004124
中图分类号:
O43 [光学];
学科分类号:
070207 ;
0803 ;
摘要:
Using a spinning window pump-probe delay scanner, we demonstrate a means of acquiring time-resolved vibrational spectra at rates up to 700 Hz. The time-dependent phase shift accumulated by the probe pulse in the presence of a coherently vibrating sample gives rise to a Raman-induced frequency shifting readily detectable in a balanced detector. This rapid delay scanning system represents a 23-fold increase in averaging speed and is > 10x faster than state-of-the-art voice coil delay lines. These advancements make pump-probe spectroscopy a more practical means of imaging complex media. (C) 2014 Optical Society of America
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页码:4124 / 4127
页数:4
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