Optical coherence tomography using nonlinear optics in fiber for broadband source generation
| Autor: | Chun-Pin Chiang, Chih-Wei Lu, Chii-Wann Lin, Chih-Chung Yang, Chih-Ren Deng, Yean-Woei Kiang, I-Jen Hsu |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Materials science
genetic structures medicine.diagnostic_test business.industry Resolution (electron density) Nonlinear optics Laser eye diseases Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Full width at half maximum Optics Optical coherence tomography law Solid-state laser Femtosecond medicine Sapphire sense organs Electrical and Electronic Engineering Physical and Theoretical Chemistry business |
| Zdroj: | Optics Communications. 212:391-396 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/s0030-4018(02)02010-2 |
| Popis: | An optical coherence tomography (OCT) system of sub-10-μm resolution, with its broadband source generated through nonlinear optics processes of a femtosecond Ti:sapphire laser in a single-mode fiber, was built for biological tissue scanning. With 400 mW power coupled into the fiber, a spectral full-width-at-half-maximum (FWHM) of 46 nm, centered at 840 nm, could be obtained. The available power for sample illumination could be as high as 100 mW. This condition was used to achieve the OCT depth resolution of 8.6 μm in tissues. The OCT system was used for scanning a human gingival mucosa sample. Cavity structures were observed that were quite consistent with the results of histological examination. |
| Databáze: | OpenAIRE |
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