Improvement of 200 kHz optical beam scanner performance with multiple internal reflection

The Journal of Engineering

Yuzo Sasaki¹  Junya Kobayashi¹  Seiji Toyoda¹ 

[1] NTT Photonics Laboratories, NTT Corporation, 3-1 Morinosato Wakamiya, Atsugi 243-0198, Japan

关键词: three-pass configuration;    optical coherence tomography;    scanning angle;    OCT system;    KTaxNb1-xO3;    optical beam scanner performance;    spatial resolution;    modulation;    optical path length;    five-pass configuration;    frequency 200 kHz;    internal reflection;   

DOI  :  10.1049/joe.2013.0104

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

The authors have realised a KTa x Nb1− x O3-based optical beam scanner that has three- and five-pass configurations with internal reflection whose scanning angle is exactly proportional to the optical path length. They successfully increased the scanning angle to about 140 mrad with a 200 kHz modulation using a five-pass configuration. This beam scanner will provide an optical coherence tomography (OCT) system with a spatial resolution of 7 μm and advantages over other OCT systems.

【 授权许可】

CC BY