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Depth extension and sidelobe suppression in optical coherence tomography using pupil filters

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

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.