Optical waveguides in LiTaO3 crystals fabricated by swift C5+ ion irradiation
Optical waveguides in LiTaO3 crystals fabricated by swift C5+ ion irradiation
Liu, G.; He, R.; Akhmadaliev, S.; de Aldana, J.; Zhou, S.; Chen, F.
We report on the optical waveguides, in both planar and ridge configurations, fabricated in LiTaO3 crystal by using carbon (C5+) ions irradiation at energy of 15 MeV. The planar waveguide was produced by direct irradiation of swift C5+ ions, whilst the ridge waveguides were manufactured by using femtosecond laser ablation of the planar layer. The reconstructed refractive index profile of the planar waveguide has showed a barrier-shaped distribution, and the near-field waveguide mode intensity distribution was in good agreement with the calculated modal profile. After thermal annealing at 260 °C in air, the propagation losses of both the planar and ridge waveguides were reduced to 10 dB/cm.
Keywords: Ion irradiation; LiTaO3 crystal; Optical waveguide
Involved research facilities
- Ion Beam Center DOI: 10.17815/jlsrf-3-159
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Cited 10 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-20113