Buried channel waveguides in KTiOPO 4 nonlinear crystal fabricated by focused He + beam writing

Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.optmat.2012.07.007

Title:	Buried channel waveguides in KTiOPO 4 nonlinear crystal fabricated by focused He + beam writing
Authors:	Dong, N. Yao, Y. Jia, Y. Chen, F. Vanga, S.K. Bettiol, A.A. Lu, Q.
Keywords:	Channel waveguides He + beam writing KTP crystals
Issue Date:	Dec-2012
Citation:	Dong, N., Yao, Y., Jia, Y., Chen, F., Vanga, S.K., Bettiol, A.A., Lu, Q. (2012-12). Buried channel waveguides in KTiOPO 4 nonlinear crystal fabricated by focused He + beam writing. Optical Materials 35 (2) : 184-186. ScholarBank@NUS Repository. https://doi.org/10.1016/j.optmat.2012.07.007
Abstract:	We report on the fabrication of KTiOPO 4 channel waveguides by using a new technique, i.e., focused He ion beam writing. With direct inscription of 2 MeV He + beams of diameter of 0.5 μm, a local modified region with positive refractive index changes is created at the end of the He + trajectory, constructing buried channel waveguides supporting both TE and TM polarizations. The calculated modal profiles of the waveguides are in good agreement with the experimental near-field intensity distributions. The propagation loss has been determined to be as low as ∼0.7 dB/cm, exhibiting good guiding properties for diverse photonic applications. © 2012 Elsevier B.V. All rights reserved.
Source Title:	Optical Materials
URI:	http://scholarbank.nus.edu.sg/handle/10635/95910
ISSN:	09253467
DOI:	10.1016/j.optmat.2012.07.007
Appears in Collections:	Staff Publications

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