Electro-optic KTN deflector stabilized with 405-nm light irradiation for wavelength-swept light source

Yuzo Sasaki; Seiji Toyoda; Takashi Sakamoto; Joji Yamaguchi; Masahiro Ueno; Tadayuki Imai; Tadashi Sakamoto; Masatoshi Fujimoto; Mahiro Yamada; Koei Yamamoto; Eiichi Sugai; Shogo Yagi

doi:10.1117/12.2251413

16 February 2017 Electro-optic KTN deflector stabilized with 405-nm light irradiation for wavelength-swept light source

Yuzo Sasaki, Seiji Toyoda, Takashi Sakamoto, Joji Yamaguchi, Masahiro Ueno, Tadayuki Imai, Tadashi Sakamoto, Masatoshi Fujimoto, Mahiro Yamada, Koei Yamamoto, Eiichi Sugai, Shogo Yagi

Author Affiliations +

Proceedings Volume 10100, Optical Components and Materials XIV; 101000H (2017) https://doi.org/10.1117/12.2251413
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

We have developed a highly stable electro-optic KTa1-xNbxO3 (KTN) deflector by enhancing electron transportation through KTN crystal. The amount of current is increased with 405-nm light irradiation to rapidly generate a stable refractive-index change, which induces deflection. The deflection angle is set at 160 mrad within tens of seconds and is kept at that angle for 3,000 hours. The developed deflector has been applied to a wavelength-swept light source to measure the thickness of Si wafers with a 3.6-mm optical length. The precision of 0.1-μm has been continuously achieved corresponding to the stability of the KTN deflector.

Citation Download Citation

Yuzo Sasaki, Seiji Toyoda, Takashi Sakamoto, Joji Yamaguchi, Masahiro Ueno, Tadayuki Imai, Tadashi Sakamoto, Masatoshi Fujimoto, Mahiro Yamada, Koei Yamamoto, Eiichi Sugai, and Shogo Yagi "Electro-optic KTN deflector stabilized with 405-nm light irradiation for wavelength-swept light source", Proc. SPIE 10100, Optical Components and Materials XIV, 101000H (16 February 2017); https://doi.org/10.1117/12.2251413

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available