Silicon and gallium arsenide (GaAs) based three dimensional photonic structure is realized here to envisage at Terahertz mirror device, which is purely belonged to the application of nano photonic devices. Further plane wave expansion technique pertaining to the mathematical formulation is disclosed in this research to evaluate the photonic bandgap of silicon and gallium arsenaide crystal structure. Aside this, lattice spacing and diameter of air holes of both the structure play key role to understand the above said application, which controls the reflection and transmission of signal . Finally it is revealed that with the proper combination of lattice spacing and diameter of air holes of the said 3D structure determines a range of Terahertz frequency. Finally, the outcome of the paper claims that the proposed structure can be a suitable candidate for nano photonic application.
{"title":"3D Waveguides for Nano Photonic Application","authors":"Sangram Kishore, U. Bhanja, C. Mishra, G. Palai","doi":"10.2139/ssrn.3517742","DOIUrl":"https://doi.org/10.2139/ssrn.3517742","url":null,"abstract":"Silicon and gallium arsenide (GaAs) based three dimensional photonic structure is realized here to envisage at Terahertz mirror device, which is purely belonged to the application of nano photonic devices. Further plane wave expansion technique pertaining to the mathematical formulation is disclosed in this research to evaluate the photonic bandgap of silicon and gallium arsenaide crystal structure. Aside this, lattice spacing and diameter of air holes of both the structure play key role to understand the above said application, which controls the reflection and transmission of signal . Finally it is revealed that with the proper combination of lattice spacing and diameter of air holes of the said 3D structure determines a range of Terahertz frequency. Finally, the outcome of the paper claims that the proposed structure can be a suitable candidate for nano photonic application.","PeriodicalId":9905,"journal":{"name":"ChemRN: Optical Materials (Topic)","volume":"461 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76506454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The intriguing coupling interactions between photochromism and ferroelectric polarization were firstly observed in Sm doped (K0.5Na0.5)NbO3 piezoceramics. After 407 nm irradiation, the maximum polarization (Pmax) and remanent polarization (Pr) intensities were dramatically decreased, whereas the coercive field, leakage current and photocurrent showed the remarkable increase. The variations of the polarization and photocurrent can be reversibly converted by alternating light irradiation and thermal stimulus, suggesting good polarization switching performance. This work provides a new route to effectively modulate ferro-/piezoelectric and photocurrent properties of ferroelectric materials by the non-contact remote control of light.
{"title":"Photochromism-Induced Macroscopic Polarization Switching in (K,Na)NbO 3-Based Piezoceramics","authors":"Haiqin Sun, Qiannan Jia, Yong Li, Qiwei Zhang, Xihong Hao","doi":"10.2139/ssrn.3474465","DOIUrl":"https://doi.org/10.2139/ssrn.3474465","url":null,"abstract":"The intriguing coupling interactions between photochromism and ferroelectric polarization were firstly observed in Sm doped (K<sub>0.5</sub>Na<sub>0.5</sub>)NbO<sub>3</sub> piezoceramics. After 407 nm irradiation, the maximum polarization (P<sub>max</sub>) and remanent polarization (Pr) intensities were dramatically decreased, whereas the coercive field, leakage current and photocurrent showed the remarkable increase. The variations of the polarization and photocurrent can be reversibly converted by alternating light irradiation and thermal stimulus, suggesting good polarization switching performance. This work provides a new route to effectively modulate ferro-/piezoelectric and photocurrent properties of ferroelectric materials by the non-contact remote control of light.","PeriodicalId":9905,"journal":{"name":"ChemRN: Optical Materials (Topic)","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73285250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-29DOI: 10.47992/ijaeml.2581.7000.0005
S. Aithal, Sreeramana Aithal, G. Bhat
The materials with an ability of self-focusing/defocusing through their light intensitydependent refractive index and phase shift properties are potential candidates for all-optical photonic devices. Several organic materials including dye-doped polymer films are attracting many researchers due to their advantages in terms of enhanced efficiency, and acceptable mechanical properties to fabricate useful devices. In this paper, we have reported the nonlinear optical properties like nonlinear absorption and nonlinear refraction of an organic dye Disperse Yellow - 7 (DY-7) doped in Polymethyl methacrylate-methacrylic acid (PMMA-MA) polymer matrix using open aperture and closed aperture Z-scan experimental methods by means of low power continuous wave (CW) laser beam. The optical limiting properties of these films are also studied using Type 1 and Type 2 configurations at different input powers using continuous wave (CW) laser beams of 532 nm wavelength. The nonlinear refractive index n2, nonlinear absorption coefficient β, changes in refractive index with input intensity, and the magnitude of third-order optical nonlinearity of the dye-doped film are experimentally determined. The sample is tested for optical power limiting in which the input limiting threshold and saturated output power level for both type 1 and type 2 optical limiting configurations are recorded. DY-7 dye-doped in PMMA-MA polymer film has shown saturation absorption at lower input irradiance and reverse saturation absorption at higher input irradiance along with thermal nonlinearity and hence found to be a potential candidate for the third harmonic property based photonic devices.
{"title":"Study of Nonlinear Optical Properties of Disperse Yellow – 7 Dye-Doped Polymer Films Using CW Laser","authors":"S. Aithal, Sreeramana Aithal, G. Bhat","doi":"10.47992/ijaeml.2581.7000.0005","DOIUrl":"https://doi.org/10.47992/ijaeml.2581.7000.0005","url":null,"abstract":"The materials with an ability of self-focusing/defocusing through their light intensitydependent refractive index and phase shift properties are potential candidates for all-optical photonic devices. Several organic materials including dye-doped polymer films are attracting many researchers due to their advantages in terms of enhanced efficiency, and acceptable mechanical properties to fabricate useful devices. In this paper, we have reported the nonlinear optical properties like nonlinear absorption and nonlinear refraction of an organic dye Disperse Yellow - 7 (DY-7) doped in Polymethyl methacrylate-methacrylic acid (PMMA-MA) polymer matrix using open aperture and closed aperture Z-scan experimental methods by means of low power continuous wave (CW) laser beam. The optical limiting properties of these films are also studied using Type 1 and Type 2 configurations at different input powers using continuous wave (CW) laser beams of 532 nm wavelength. The nonlinear refractive index n2, nonlinear absorption coefficient β, changes in refractive index with input intensity, and the magnitude of third-order optical nonlinearity of the dye-doped film are experimentally determined. The sample is tested for optical power limiting in which the input limiting threshold and saturated output power level for both type 1 and type 2 optical limiting configurations are recorded. DY-7 dye-doped in PMMA-MA polymer film has shown saturation absorption at lower input irradiance and reverse saturation absorption at higher input irradiance along with thermal nonlinearity and hence found to be a potential candidate for the third harmonic property based photonic devices.","PeriodicalId":9905,"journal":{"name":"ChemRN: Optical Materials (Topic)","volume":"84 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90854211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Photonics is a subject of scientific study on generating, controlling, harvesting and detecting the beam of photons or light with a purpose of creating, manipulating, storing, transmitting and detecting information using nonlinear optical properties of materials. This paper is a new attempt to integrate scientific research and social research by analysing the characteristics of dye-doped polymer films for photonics applications. The analysing framework called ABCD framework to analyse any business concepts, business systems, technology, strategy, engineering material, technology or even an idea systematically by identifying the advantages, benefits, constraints, and disadvantages under various determinant issues and listing the constituent critical elements under each construct. In this paper, as per the ABCD framework, the various determinant issues related to the use of dye-doped polymer films for photonic applications through focus group method are determined as affecting factors under : (1) Material Issues, (2) Application Issues, (3) Commercialization Issues, (4) Production/Service providers Issues, (5) Customer Issues, and (6) Environmental/Social Issues. The constituent critical elements of these factors are listed under the four constructs - advantages, benefits, constraints and disadvantages of the ABCD technique and tabulated. The analysis has brought about 204 critical constituent elements which satisfy the success of this analysis methodology.
{"title":"ABCD Analysis of Dye-Doped Polymers for Photonic Applications","authors":"S. Aithal, Sreeramana Aithal","doi":"10.21013/JAS.V4.N3.P1","DOIUrl":"https://doi.org/10.21013/JAS.V4.N3.P1","url":null,"abstract":"Photonics is a subject of scientific study on generating, controlling, harvesting and detecting the beam of photons or light with a purpose of creating, manipulating, storing, transmitting and detecting information using nonlinear optical properties of materials. This paper is a new attempt to integrate scientific research and social research by analysing the characteristics of dye-doped polymer films for photonics applications. The analysing framework called ABCD framework to analyse any business concepts, business systems, technology, strategy, engineering material, technology or even an idea systematically by identifying the advantages, benefits, constraints, and disadvantages under various determinant issues and listing the constituent critical elements under each construct. In this paper, as per the ABCD framework, the various determinant issues related to the use of dye-doped polymer films for photonic applications through focus group method are determined as affecting factors under : (1) Material Issues, (2) Application Issues, (3) Commercialization Issues, (4) Production/Service providers Issues, (5) Customer Issues, and (6) Environmental/Social Issues. The constituent critical elements of these factors are listed under the four constructs - advantages, benefits, constraints and disadvantages of the ABCD technique and tabulated. The analysis has brought about 204 critical constituent elements which satisfy the success of this analysis methodology.","PeriodicalId":9905,"journal":{"name":"ChemRN: Optical Materials (Topic)","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78618742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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