Hybrid waveguiding structure in LiTaO3 crystal fabricated by direct femtosecond laser writing

Cheng, Chen; Jia, Yuechen; Vázquez de Aldana, Javier R.; Tan, Yang; Chen, Feng

doi:10.1016/j.optmat.2015.11.043

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Título

Hybrid waveguiding structure in LiTaO3 crystal fabricated by direct femtosecond laser writing

Autor(es)

Cheng, Chen

Jia, Yuechen

Vázquez de Aldana, Javier R.

Tan, Yang

Chen, Feng

Palabras clave

Optical waveguides

Femtosecond laser micromachining

Lithium tantalate crystal

Polarization-selective devices

Fecha de publicación

2016-01

Citación

Cheng, C., Jia, Y., de Aldana, J. R. V., Tan, Y., & Chen, F. (2016). Hybrid waveguiding structure in LiTaO3 crystal fabricated by direct femtosecond laser writing. Optical Materials, 51, 190-193. https://doi.org/10.1016/j.optmat.2015.11.043

Resumen

A hybrid waveguiding structure has been fabricated in a z-cut lithium tantalate (LiTaO3) crystal wafer by direct femtosecond laser writing. Due to the laser-induced anisotropic modifications of the extraordinary and ordinary refractive indices (ne and no) of LiTaO3 crystal, the structure exhibits polarization-sensitive guiding features along vertical and horizontal orientations. Based on this feature, circularly-polarized light beam can be converted to vertically-/horizontally-polarized ones (i.e., TE and TM), with approximately 1:1 power splitting ratio. The well-guided performance of the polarization-sensitive structure shows the potential for integration with existing light signals to realize all-optical information processing.

URI

https://hdl.handle.net/10366/146830

ISSN

0925-3467

DOI

10.1016/j.optmat.2015.11.043

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