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Fabrication of waveguides in Yb:YCOB crystal by MeV oxygen ion implantation |
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| Authors: | Yang Jiao Feng Chen Ke-Ming Wang Liang-Ling Wang Qing-Ming Lu Rui Nie |
| Affiliation: | a School of Physics and Microelectronics, Shandong University, Jinan 250100, China b State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China c School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China d The Key Laboratory of Heavy Ion Physics, Peking University, Ministry of Education, Beijing 100871, China |
| Abstract: | Oxygen ions with energies of 6.0 or 3.0 MeV were implanted into y-cut Yb:YCOB crystals at fluences ranging from 5.0 × 1013 to 2.0 × 1015 ions/cm2 at room temperature, forming optical planar waveguide structures. Dark-mode line spectroscopy was applied at two wavelengths, 633 and 1539 nm, in various excitation configurations, showing strong enhancement of one of the indices (nx) in the implanted near surface. The nx refractive index profile is reconstructed by a reflectivity calculation method and compared to the ion energy losses profiles deduced from SRIM-code simulation. Moreover, the near-field patterns were imaged by an end-fire coupling arrangement. |
| Keywords: | 61.72.Ww 42.65.Wi |
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