Mapping near-field of the guided second-harmonic in lithium niobate nanowaveguides with photosensitive polymer
| Autor: | Rachel Grange, Marc Reig Escalé, Anton Sergeyev, Reinhard Geiss, Kevin Floc’h |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
business.industry Lithium niobate Nonlinear optics Near and far field 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Signal 010309 optics chemistry.chemical_compound Optics chemistry 0103 physical sciences Near-field scanning optical microscope 0210 nano-technology business Microscale chemistry Plasmon Nanopillar |
| Zdroj: | 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). |
| DOI: | 10.1109/cleoe-eqec.2017.8087629 |
| Popis: | Nanowaveguides (NWs) are valuable components for building miniaturized optical devices since they have both nanoscale and microscale dimensions. One can further extend the NW application range by exploiting nonlinear optical effects such as second-harmonic (SH) and sum-frequency (SF) generation. Lithium niobate (LiNbO3) NWs and nanopillars are demonstrated to generate and guide SH [1-4] and SF [5] signals. However, to develop nonlinear NW applications, one should know behaviour of the guided light inside the NWs. This information can be obtained by scanning near-field optical microscopy, which requires complex equipment. As an alternative, one can also use a photopolymerization technique. This technique is based on a negative photosensitive polymer, which crosslinks when irradiated by light and, thus, maps the distribution of the electric field. Previously, this technique was applied to image plasmonic standing-waves in metallic NWs through two-photon absorption (TPA) [6]. Here, we apply this technique to study the guided SH signal in LiNbO3 NWs and map its behaviour at the NW output and along the NW, which may help to maximize the output power of the nonlinear signal [7]. |
| Databáze: | OpenAIRE |
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