On the observation of dispersion in tunable second-order nonlinearities of silicon-rich nitride thin films
We present experimental results on second-harmonic generation in non-stoichiometric, silicon-rich nitride films. The as-deposited film presents a second-order nonlinear coefficient, or χ(2), as high as 8 pm/V. This value can be widely tuned using the electric field induced second harmonic effect, an...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2019-03-01
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| Series: | APL Photonics |
| Online Access: | http://dx.doi.org/10.1063/1.5053704 |
| Summary: | We present experimental results on second-harmonic generation in non-stoichiometric, silicon-rich nitride films. The as-deposited film presents a second-order nonlinear coefficient, or χ(2), as high as 8 pm/V. This value can be widely tuned using the electric field induced second harmonic effect, and a maximum value of 22.7 pm/V was achieved with this technique. We further illustrate that the second-order nonlinear coefficient exhibited by these films can be highly dispersive in nature and require further study and analysis to evaluate their viability for in-waveguide applications at telecommunication wavelengths. |
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| ISSN: | 2378-0967 |