Design and optimization of a spectrometer for high-resolution SD-OCT. (22nd March 2019)

• Record Type: Journal Article
• Authors: Wang, Lulu; Yu, Xiaojun; Ge, Xin; Wu, Xuan; Wang, Xianghong; Bo, En; Wang, Nanshuo; Liu, Xinyu; Ni, Guangming; Liu, Linbo
• Is Part Of: Laser physics letters. Volume 16:Number 4(2019:Apr.)
• Publication Date: 2019-03-22
• Subjects: optical coherence tomography -- imaging systems -- medical and biological imaging -- medical optics instrumentation; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/ab0a5d
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: We report the design of a high-efficiency spectrometer for high-resolution spectral-domain optical coherence tomography (SD-OCT). The advantages of the proposed spectrometer are two-fold: first, we use a concave mirror instead of a camera lens (as typically used) as the focusing optics to both improve the transmission efficiency and eliminate chromatic aberrations; second, the efficiency of the proposed spectrometer is approximately 1.23 times that of a refractive optics-based spectrometer for an SD-OCT system, with comparable ranging depth and axial resolution. Both theoretical analyses and imaging experiments were conducted to characterize and validate the performance of the proposed spectrometer.