Haiwei Chen, Mengwei Zhao, Haotian Xie, Yawen Su, Zhilin Ye, Jianan Ma, Yuefeng Nie, Yunfei Niu, Peng Zhan, Shining Zhu, and Xiaopeng Hu
Periodically poled lithium tantalate on insulator (PPLTOI) was successfully fabricated by applying a high-voltage electric field. The shape of the electrode, which determines the electric field distribution, as well as the poling time, and the strength of the electric field, are investigated in detail for the fabrication of periodically poled LTOI. By optimizing the poling parameters, the duty cycle of the inverted domain can be flexibly adjusted as well as be controlled to the optimal value of 50%. Moreover, the fabricated domain structure is uniform, and the standard deviation is less than 4.8%. The study presented in this work will pave the way for applications of LTOI in nonlinear integrated photonics.
{"title":"Periodic poling of thin-film lithium tantalate by applying a high-voltage electric field","authors":"Haiwei Chen, Mengwei Zhao, Haotian Xie, Yawen Su, Zhilin Ye, Jianan Ma, Yuefeng Nie, Yunfei Niu, Peng Zhan, Shining Zhu, and Xiaopeng Hu","doi":"10.1364/ome.508043","DOIUrl":"https://doi.org/10.1364/ome.508043","url":null,"abstract":"Periodically poled lithium tantalate on insulator (PPLTOI) was successfully fabricated by applying a high-voltage electric field. The shape of the electrode, which determines the electric field distribution, as well as the poling time, and the strength of the electric field, are investigated in detail for the fabrication of periodically poled LTOI. By optimizing the poling parameters, the duty cycle of the inverted domain can be flexibly adjusted as well as be controlled to the optimal value of 50%. Moreover, the fabricated domain structure is uniform, and the standard deviation is less than 4.8%. The study presented in this work will pave the way for applications of LTOI in nonlinear integrated photonics.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"35 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138537092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We have proposed an encapsulated liquid-crystal-polymer (LC-polymer) composite structure that is manufactured via the method of LC-in-polymer encapsulation. Through this approach, the optical phase of the nanometer size encapsulation LCs is effectively increased because the layer thickness of the capsuled LCs is easily increased by various coating methods with high filling ratio (> 55%) of LCs in the polymeric matrix with embedded LCs. In such a polymer composite film of nanometer size encapsulation LC, the phase modulation can be effectively enhanced by increasing the layer thickness without negatively affecting the operating voltage or response time. In experiments, the samples reliably switch from the isotropic phase to the anisotropic phase under an external electrical field, exhibiting high optical efficiency, low operational voltage (< 25Vrms), and fast response time (< 10msec). Additionally, the LC phase modulation is not only polarization-independent but also allows for flexible devices. The enhanced electro-optic performance of the proposed nanometer size encapsulated LC devices holds potential for various applications in flexible and tunable electro-optical systems.
{"title":"Investigation of a polarizer-free liquid crystal phase modulation via nanometer size encapsulation of nematic liquid crystals","authors":"Seok-Lyul Lee, Chang-Nien Mao, and Yi-Hsin Lin","doi":"10.1364/ome.509266","DOIUrl":"https://doi.org/10.1364/ome.509266","url":null,"abstract":"We have proposed an encapsulated liquid-crystal-polymer (LC-polymer) composite structure that is manufactured via the method of LC-in-polymer encapsulation. Through this approach, the optical phase of the nanometer size encapsulation LCs is effectively increased because the layer thickness of the capsuled LCs is easily increased by various coating methods with high filling ratio (> 55%) of LCs in the polymeric matrix with embedded LCs. In such a polymer composite film of nanometer size encapsulation LC, the phase modulation can be effectively enhanced by increasing the layer thickness without negatively affecting the operating voltage or response time. In experiments, the samples reliably switch from the isotropic phase to the anisotropic phase under an external electrical field, exhibiting high optical efficiency, low operational voltage (< 25V<sub>rms</sub>), and fast response time (< 10msec). Additionally, the LC phase modulation is not only polarization-independent but also allows for flexible devices. The enhanced electro-optic performance of the proposed nanometer size encapsulated LC devices holds potential for various applications in flexible and tunable electro-optical systems.","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"35 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138537100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Benjamin Mills, James Grant-Jacob, Michalis Zervas
{"title":"Predictive visualisation of high repetition rate femtosecond machining of silica using deep learning","authors":"Benjamin Mills, James Grant-Jacob, Michalis Zervas","doi":"10.1364/ome.505746","DOIUrl":"https://doi.org/10.1364/ome.505746","url":null,"abstract":"","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"59 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136283597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Transparent ultrawidebandpolarization-insensitive absorber with optimalthickness based on a grid ITO structure","authors":"Senfeng Lai, Yang Liu, JingYi Luo","doi":"10.1364/ome.505424","DOIUrl":"https://doi.org/10.1364/ome.505424","url":null,"abstract":"","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":"68 41","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136281996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Domenico de Ceglia, Andrea Alu, Dragomir Neshev, Costantino De Angelis
{"title":"Analog image processing with nonlinearnonlocal flat optics","authors":"Domenico de Ceglia, Andrea Alu, Dragomir Neshev, Costantino De Angelis","doi":"10.1364/ome.507644","DOIUrl":"https://doi.org/10.1364/ome.507644","url":null,"abstract":"","PeriodicalId":19548,"journal":{"name":"Optical Materials Express","volume":" 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135241741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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