| ชื่อเรื่อง | : | Depth extension and sidelobe suppression in optical coherence tomography using pupil filters |
| นักวิจัย | : | Yu, Xiaojun , Liu, Xinyu , Gu, Jun , Cui, Dongyao , Wu, Junying , Liu, Linbo |
| คำค้น | : | DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics |
| หน่วยงาน | : | Nanyang Technological University, Singapore |
| ผู้ร่วมงาน | : | - |
| ปีพิมพ์ | : | 2557 |
| อ้างอิง | : | Yu, X., Liu, X., Gu, J., Cui, D., Wu, J., Liu, L. (2014). Depth extension and sidelobe suppression in optical coherence tomography using pupil filters. Optics express, 22(22), 26956-26966. , 1094-4087 , http://hdl.handle.net/10220/25251 , http://dx.doi.org/10.1364/OE.22.026956 |
| ที่มา | : | - |
| ความเชี่ยวชาญ | : | - |
| ความสัมพันธ์ | : | Optics express |
| ขอบเขตของเนื้อหา | : | - |
| บทคัดย่อ/คำอธิบาย | : | We demonstrate a new focus engineering scheme to achieve both extended depth of focus (DOF) and sidelobe suppression in spectral-domain optical coherence tomography (SD-OCT) system. Each of the illumination pupil function and the detection pupil function is modulated using an annular pupil filter implemented by center obscuration. The two pupil filters are arranged in a dark-field configuration such that the first sidelobe of the illumination point-spread function (PSF) matches the first minimum of the detection PSF in the lateral focal plane. We tested the feasibility of the proposed scheme numerically, and then constructed a dark-field OCT (DF-OCT) system to further verify its effectiveness experimentally. Simulation results show that a DOF gain of 4.2 can be achieved compared with a full aperture OCT (FA-OCT) system, with a suppression ratio of 2.9 dB for the first sidelobe compared with an annular-aperture bright-field OCT (BF-OCT) system. Experimental results show that the constructed DF-OCT extends the DOF by three-fold compared with the constructed FA-OCT, and suppresses the first sidelobe by 3.1 dB compared with the BF-OCT. The penalty for the extended DOF is an ~11.6 dB drop in sensitivity compared with the FA-OCT system. NRF (Natl Research Foundation, S’pore) |
| บรรณานุกรม | : |
Yu, Xiaojun , Liu, Xinyu , Gu, Jun , Cui, Dongyao , Wu, Junying , Liu, Linbo . (2557). Depth extension and sidelobe suppression in optical coherence tomography using pupil filters.
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Yu, Xiaojun , Liu, Xinyu , Gu, Jun , Cui, Dongyao , Wu, Junying , Liu, Linbo . 2557. "Depth extension and sidelobe suppression in optical coherence tomography using pupil filters".
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Yu, Xiaojun , Liu, Xinyu , Gu, Jun , Cui, Dongyao , Wu, Junying , Liu, Linbo . "Depth extension and sidelobe suppression in optical coherence tomography using pupil filters."
กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print. Yu, Xiaojun , Liu, Xinyu , Gu, Jun , Cui, Dongyao , Wu, Junying , Liu, Linbo . Depth extension and sidelobe suppression in optical coherence tomography using pupil filters. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.
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