| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1493419 | Optical Materials | 2016 | 4 Pages |
•A method for probing quadratic electro-optic (QEO) coefficient of tantalum potassium niobate crystal based on Fourier transform was proposed.•The phase differences of deformed interference fringes introduced by quadratic electro-optic effect is extracted by Fourier transform, the refractive index change is further calculated according to structure of the actual light beam path.•All the independent component of QEO coefficient tensor of KTN crystal was acquired with the help of the computer digital image processing technology.
A method for probing quadratic electro-optic(QEO) coefficient of tantalum potassium niobate crystal based on Fourier transform was proposed. We acquired all the independent component of QEO coefficient tensor of crystal, they are h11=1.56×10-14m2/V2, h12=1.24×10-14m2/V2 and h44=0.160×10-14m2/V2 respectively. With the help of the computer digital image processing technology, this method should have further application prospect in the areas of optical properties parameters measuring to the optical functional materials.
