- 著者
- Min Eun Jung Shin Jun Geun Lee Jae Hwi Yasuno Yoshiaki Lee Byeong Ha
- 出版者
- Optical Society of America
- 雑誌
- Applied optics (ISSN:1559128X)
- 巻号頁・発行日
- vol.52, no.21, pp.5143-5151, 2013-07
We propose a single-step method appropriated for a fiber-optic probe-based full-range spectral domain optical coherence tomography (OCT). The fiber-optic probe was scanned over a sample with a magnetically driven actuator. In the reference arm, a phase shift of π/2 was applied during two neighbor axial scanning, from which the complex spectral interferogram was directly reconstructed. Since the complex-conjugate-free OCT image is obtained by doing just one Fourier transform on the complex interferogram, obtaining the full-range image is simple in algorithm and effective in computation time. Some full-range images of biological samples created with the proposed method are presented and the processing time is analyzed.
- 著者
- Hong Young-Joo Makita Shuichi Jaillon Franck Ju Myeong Jin Min Eun Jung Lee Byeong Ha Itoh Masahide Miura Masahiro Yasuno Yoshiaki
- 出版者
- Optical Society of America
- 雑誌
- Optics Express (ISSN:10944087)
- 巻号頁・発行日
- vol.20, no.3, pp.2740-2760, 2012-01
- 被引用文献数
- 50
A high-penetration swept-source optical coherence tomography (HP-SS-OCT) system based on a 1-μm short cavity laser is developed. Doppler OCT processing is applied, along with a custom-made numerical phase stabilization algorithm; this process does not require additional calibration hardware. Thus, our phase stabilization method is simple and can be employed in a variety of SS-OCT systems. The bidirectional blood flow and vasculature in the deep choroid was successfully imaged via two Doppler modes that use different time intervals for Doppler processing. En face projection image of squared power of Doppler shift is compared to ICGA, and the utility of our method is verified.
- 著者
- Min Eun Jung Shin Jun Geun Lee Jae Hwi Yasuno Yoshiaki Lee Byeong Ha
- 出版者
- Optical Society of America
- 雑誌
- Optics letters (ISSN:01469592)
- 巻号頁・発行日
- vol.37, no.15, pp.3105-3107, 2012-08
- 被引用文献数
- 7
We present a full range handheld probe type spectral domain optical coherence tomography (SD-OCT) method. Here, the sample arm is composed of a tilted fiber-optic cantilever scanner; thus, the phase shift concurrently occurs while sample scanning. With the phase shift, we could achieve a full range complex-conjugate-free OCT image with no additional phase shifters in the reference arm. To realize this technique, a magnetically actuated probe was adopted. Full range SD-OCT images of a pearl, human fingernail, and human tooth were subsequently obtained using this suggested probe. The scanning range and acquisition speed were 3 mm and 20 frames/s, respectively.