Vectorial approach to studying second harmonic generation in collagen using linearly and radially polarized beams

被引：3
|
作者：
Yew, Elijah Y. S. [1 ]
Sheppard, Colin J. R. [1 ]
机构：
[1] Natl Univ Singapore, Grad Programme Bioengn, Singapore 117548, Singapore
来源：
SARATOV FALL MEETING 2005: OPTICAL TECHNOLOGIES IN BIOPHYSICS AND MEDICINE VII | 2006年 / 6163卷
关键词：
second harmonic generation; collagen; vectorial theory; high angle focusing; microscopy;
D O I：
10.1117/12.696973
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
The study of second harmonic generation (SHG) has been examined using a vectorial approach for both linearly and radially polarized beams. This approach is necessary for situations when the beam is tightly focused such as in a microscope. Using the vectorial approach, the result of including the y and z components of the electric field is that previously ignored 'cross-component' terms are now found to have an influence on the SHG polarization and the radiation patterns obtained. Since SHG is dependent on the susceptibility tensor, the inclusion of these 'cross-component' terms can help to identify structural changes in biological materials simply by studying the changes in the tensor via the SHG polarization. In particular, we calculate the second harmonic polarization induced in collagen for both linearly and radially polarized beams.
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页数：8
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