https://scholars.lib.ntu.edu.tw/handle/123456789/607061
標題: | Higher order mode supercontinuum generation in tantalum pentoxide (Ta2O5) channel waveguide | 作者: | Fan R GONG-RU LIN |
公開日期: | 2021 | 卷: | 11 | 期: | 1 | 來源出版物: | Scientific Reports | 摘要: | We fabricated tantalum pentoxide (Ta2O5) channel waveguides and used them to experimentally demonstrate higher-order mode supercontinuum (SC) generation. The Ta2O5 waveguide has a high nonlinear refractive index which was in an order magnitude of 10–14 cm2/W and was designed to be anomalously dispersive at the pumping wavelength. To the best of our knowledge, this is the first time a higher-order mode femtosecond pump based broadband SC has been measured from a nonlinear waveguide using the phase-matching method. This enabled us to demonstrate a SC spectrum spanning from 842 to 1462?nm (at ? 30?dB), which corresponds to 0.83 octaves, when using the TM10 waveguide mode. When using the TE10 mode, the SC bandwidth is slightly reduced for the same excitation peak power. In addition, we theoretically estimated and discussed the possibility of using the broadband higher-order modes emitted from the Ta2O5 waveguide for trapping nanoparticles. Hence, we believe that demonstrated Ta2O5 waveguide are a promising broadband light source for optical applications such as frequency metrology, Raman spectroscopy, molecular spectroscopy and optical coherence tomography. ? 2021, The Author(s). |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104137393&doi=10.1038%2fs41598-021-86922-8&partnerID=40&md5=0b87b033de8b6002f3974a34ca06d6f9 https://scholars.lib.ntu.edu.tw/handle/123456789/607061 |
ISSN: | 20452322 | DOI: | 10.1038/s41598-021-86922-8 |
顯示於: | 電機工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。