Title :
Polarisation-independent beam scanner using electro-optic KTN crystals
Author :
Toyoda, Seiji ; Miyazu, Jun ; Sasaki, Yutaka ; Imai, Tetsuro ; Kobayashi, Junya
Author_Institution :
NTT Photonics Labs., Atsugi, Japan
Abstract :
A polarisation-independent optical beam scanner that uses electro-optic KTa1-xNbxO3 (KTN) crystals has been demonstrated. The polarisation dependence was compensated for by using a pair of KTN beam scanners and a half-waveplate without any degradation in the performance of either KTN beam scanner. This compensation is the result of a combination of electro-optic effects consisting of Kerr effects and elasto-optic effects via the electrostrictive and elastic strains in KTN crystals.
Keywords :
electro-optical effects; light polarisation; optical Kerr effect; optical materials; optical retarders; optical scanners; photoelasticity; potassium compounds; tantalum compounds; KTa1-xNbxO3; Kerr effects; elastic strains; elastooptic effects; electrooptic KTN crystals; electrostrictive strains; half-waveplate; polarisation dependence; polarisation-independent optical beam scanner;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2013.3920