Improvement of coherence length in a 200-kHz swept light source equipped with a KTN deflector

Shogo Yagi, Kazunori Naganuma, Tadayuki Imai, Yasuo Shibata, Jun Miyazu, Masahiro Ueno, Yuuichi Okabe, Yuzo Sasaki, Kazuo Fujiura, Masahiro Sasaura, Kazutoshi Kato, Masato Ohmi, Masamitsu Haruna

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

11 被引用数 (Scopus)

抄録

We are developing a new light source for swept-source OCT, namely, an external-cavity LD equipped with a KTN electro-optic deflector. Being free from mechanical resonance, our 1.3-μm laser exhibits scanning range of almost 100 nm up to 200-kHz under a ±300 V deflector driving voltage. Using a semi-empirically derived equation, we find that KTN's convex lens power degrades the coherence length, and this can be compensated with a cylindrical concave lens. Such compensation was experimentally confirmed by observing reduction of elliptical beam divergence. OCT images of a human fingernail are obtained using the swept source.

本文言語英語
ホスト出版物のタイトルOptical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI
出版社SPIE
ISBN(印刷版)9780819488565
DOI
出版ステータス出版済み - 2012
外部発表はい
イベントOptical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI - San Francisco, CA, 米国
継続期間: 1 23 20121 25 2012

出版物シリーズ

名前Progress in Biomedical Optics and Imaging - Proceedings of SPIE
8213
ISSN(印刷版)1605-7422

その他

その他Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVI
Country米国
CitySan Francisco, CA
Period1/23/121/25/12

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Radiology Nuclear Medicine and imaging

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