Heterodyne detection of multiply scattered monochromatic light with a multipixel detector

被引:58
|
作者
Gross, M
Goy, R
Forget, BC
Atlan, M
Ramaz, E
Boccara, AC
Dunn, AK
机构
[1] Ecole Normale Super, Lab Kastler Brossel, F-75231 Paris, France
[2] Univ Paris 06, CNRS, UMR 8552, F-75231 Paris, France
[3] Univ Paris 06, Ecole Super Phys & Chim Ind, CNRS, UPR A0005,Lab Opt, F-75231 Paris, France
[4] Massachusetts Gen Hosp, Martinos Ctr Biomed Imaging, Charlestown, MA 02114 USA
关键词
D O I
10.1364/OL.30.001357
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A new technique is presented for measuring the spectral broadening of light that has been multiply scattered from scatterers in motion. In our method the scattered light is detected by a heterodyne receiver that uses a CCD as a multipixel detector. We obtain the frequency spectrum of the scattered light by sweeping the heterodyne local oscillator frequency. Our detection scheme combines a high optical etendue (product of the surface by the detection solid angle) with an optimal detection of the scattered photons (shot noise). Using this technique, we measure, in vivo, the frequency spectrum of the light scattered through the breast of a female volunteer. (c) 2005 Optical Society of America.
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页码:1357 / 1359
页数:3
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