Refractive index modulating Raman spectroscopy based on perovskite PMN-PT ceramics
| Autor: | Danzhu Wei, Yuan Li, Shu Tian, Yonglong Jin, Fang Jinghuai, Jianzhen Shi, Xinxiang Ma, Tian Xu, Chaonan Wang |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
business.industry Materials Science (miscellaneous) 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Waveguide (optics) Industrial and Manufacturing Engineering 010309 optics symbols.namesake Optics Planar visual_art 0103 physical sciences visual_art.visual_art_medium symbols Ceramic Coherent anti-Stokes Raman spectroscopy Business and International Management 0210 nano-technology business Raman spectroscopy Refractive index Raman scattering Perovskite (structure) |
| Zdroj: | Applied Optics. 55:2748 |
| ISSN: | 1539-4522 0003-6935 |
| DOI: | 10.1364/ao.55.002748 |
| Popis: | A three-layer planar waveguide structure comprising a perovskite (1−x)Pb(Mg1/3Nb2/3Nb2/3)O3−xPbTiO3 (PMN-PT) ceramic sandwiched by two silver films is designed and called PMPW. Using the high sensitivity of ultrahigh-order modes, theoretical analysis is performed to calculate the effective refractive index (ERI) of the PMPW. A detailed analysis of the Raman spectrum of PMN-PT at 795 cm−1 is performed. A comparison of the numerical analysis and experimental results reveals that the nonlinear change in ERI plays a primary role in the Raman signal variation. Analysis of the Raman spectrum of a sample deposited on PMPW confirms that it is effective for modulating Raman signals. |
| Databáze: | OpenAIRE |
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