Higher order mode supercontinuum generation in tantalum pentoxide (Ta2O5) channel waveguide

Abstract 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 anomalous...

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Autores principales:	Ranran Fan, Yuan-Yao Lin, Lin Chang, Andreas Boes, John Bowers, Jia-Wei Liu, Chao-Hong Lin, Te-Keng Wang, Junpeng Qiao, Hao-Chung Kuo, Gong-Ru Lin, Min-Hsiung Shih, Yung-Jr Hung, Yi-Jen Chiu, Chao-Kuei Lee
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/22fdb5555feb416f8100090f5b3456c6
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spelling	oai:doaj.org-article:22fdb5555feb416f8100090f5b3456c62021-12-02T14:31:01ZHigher order mode supercontinuum generation in tantalum pentoxide (Ta2O5) channel waveguide10.1038/s41598-021-86922-82045-2322https://doaj.org/article/22fdb5555feb416f8100090f5b3456c62021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86922-8https://doaj.org/toc/2045-2322Abstract 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.Ranran FanYuan-Yao LinLin ChangAndreas BoesJohn BowersJia-Wei LiuChao-Hong LinTe-Keng WangJunpeng QiaoHao-Chung KuoGong-Ru LinMin-Hsiung ShihYung-Jr HungYi-Jen ChiuChao-Kuei LeeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ranran Fan Yuan-Yao Lin Lin Chang Andreas Boes John Bowers Jia-Wei Liu Chao-Hong Lin Te-Keng Wang Junpeng Qiao Hao-Chung Kuo Gong-Ru Lin Min-Hsiung Shih Yung-Jr Hung Yi-Jen Chiu Chao-Kuei Lee Higher order mode supercontinuum generation in tantalum pentoxide (Ta2O5) channel waveguide
description	Abstract 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.
format	article
author	Ranran Fan Yuan-Yao Lin Lin Chang Andreas Boes John Bowers Jia-Wei Liu Chao-Hong Lin Te-Keng Wang Junpeng Qiao Hao-Chung Kuo Gong-Ru Lin Min-Hsiung Shih Yung-Jr Hung Yi-Jen Chiu Chao-Kuei Lee
author_facet	Ranran Fan Yuan-Yao Lin Lin Chang Andreas Boes John Bowers Jia-Wei Liu Chao-Hong Lin Te-Keng Wang Junpeng Qiao Hao-Chung Kuo Gong-Ru Lin Min-Hsiung Shih Yung-Jr Hung Yi-Jen Chiu Chao-Kuei Lee
author_sort	Ranran Fan
title	Higher order mode supercontinuum generation in tantalum pentoxide (Ta2O5) channel waveguide
title_short	Higher order mode supercontinuum generation in tantalum pentoxide (Ta2O5) channel waveguide
title_full	Higher order mode supercontinuum generation in tantalum pentoxide (Ta2O5) channel waveguide
title_fullStr	Higher order mode supercontinuum generation in tantalum pentoxide (Ta2O5) channel waveguide
title_full_unstemmed	Higher order mode supercontinuum generation in tantalum pentoxide (Ta2O5) channel waveguide
title_sort	higher order mode supercontinuum generation in tantalum pentoxide (ta2o5) channel waveguide
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/22fdb5555feb416f8100090f5b3456c6
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Higher order mode supercontinuum generation in tantalum pentoxide (Ta2O5) channel waveguide

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