The 63rd JSAP Spring Meeting, 2016

Presentation information

Poster presentation

3 Optics and Photonics » 3.14 Optical control devices and optical fibers

[20p-P5-1~13] 3.14 Optical control devices and optical fibers

Sun. Mar 20, 2016 1:30 PM - 3:30 PM P5 (Gymnasium)

1:30 PM - 3:30 PM

[20p-P5-3] Evaluation of elasto optic coefficients p11 and p12 in KTa1-xNbxO3 by using space charge

Tadayuki Imai1, Sohan Kawamura1, Tadashi Sakamoto1 (1.NTT Device Innovation Center)

Keywords:KTa1-xNbxO3,electrooptic effect,elasto optic effect

We evaluated elasto optic coefficients of KTa1-xNbxO3 (KTN) which are required for precise device simulation for optical beam deflectors and varifocal lenses using KTN single crystals. The coefficients were deduced from refractive index distributions generated in the crystal by a space charge. p11was 0.52 and p12 was 0.09. The fraction of genuine EO coefficients was estimated to be about 60 % of the apparent coefficient.