| 光谱学与光谱分析 |
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| White-Light Source Spectral Domain OCT Based on Partial Spectrum Analysis |
| LIN Ling1,ZHANG Tai-shi1,2,ZHENG Yu1,LI Gang1,REN Zhao1 |
| LIN Ling1,ZHANG Tae-Sok1,2,ZHENG Yu1,LI Gang1,REN Zhao1 |
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Abstract In order to enhance the longitudinal resolution and the signal to noise ratio (SNR) of spectral domain OCT(SDOCT), a SDOCT using white light source was developed. By analyzing the relationship among axial total number of pixels in the horizontal direction of CCD, the spectrum of white-light source and longitudinal resolution, a white-light source SDOCT(WSSDOCT) based on partial spectrum analysis was developed and introduced. With proper white light source required and band width for detection selected, the SNR was improved with maximum detecting depth and high longitudinal resolution guaranteed. Experimental results validate the measurement method for the coherence length of the light source, and system & image longitudinal resolution, and also testify the feasibility of WSSDOCT.
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Received: 2007-03-09
Accepted: 2007-06-16
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Corresponding Authors:
LIN Ling
E-mail: ligang59@tju.edu.cn
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