Pub Date : 2010-12-17DOI: 10.1109/OMEMS.2010.5672124
Hanhong Gao, Satoshi Takahashi, L. Tian, G. Barbastathis
A subwavelength-modulated dielectric nonlinear Lu¨neburg lens is proposed and numerically verified. In the linear limit, the structure focuses a plane wave to an ideal geometrical point image. In the presence of Kerr nonlinearity, focal shift to a Gaussian beam input is compensated at a tunable intensity value. Nonlinear Lu¨neburg lens is also capable of finite conjugate imaging. A modified aperiodic Lu¨neburg is also proposed to greatly reduce the aberration caused by the Kerr effect.
{"title":"Nonlinear Kerr effect aperiodic Lüneburg lens","authors":"Hanhong Gao, Satoshi Takahashi, L. Tian, G. Barbastathis","doi":"10.1109/OMEMS.2010.5672124","DOIUrl":"https://doi.org/10.1109/OMEMS.2010.5672124","url":null,"abstract":"A subwavelength-modulated dielectric nonlinear Lu¨neburg lens is proposed and numerically verified. In the linear limit, the structure focuses a plane wave to an ideal geometrical point image. In the presence of Kerr nonlinearity, focal shift to a Gaussian beam input is compensated at a tunable intensity value. Nonlinear Lu¨neburg lens is also capable of finite conjugate imaging. A modified aperiodic Lu¨neburg is also proposed to greatly reduce the aberration caused by the Kerr effect.","PeriodicalId":421895,"journal":{"name":"2010 International Conference on Optical MEMS and Nanophotonics","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116673564","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}
Optically-induced forces can lead to mechanical deformation for micro- or nano-structures. Scattering optical forces and gradient optical forces, both originating from the linear momentum of light, have been widely demonstrated. Here we suggest the use of gyroscopic optical forces, originating from the angular momentum of light, to facilitate mechanical deformation. We calculated gyroscopic precession by light, arising from the angular momentum of a circularly polarized beam of light propagating inside a bent nano-waveguide. This gyroscopic optical force can deform the structure, with right-handed and left-handed circular polarization inducing opposite displacements.
{"title":"Gyroscopic optomechanics","authors":"Xingyu Zhang, M. Tomes, T. Carmon","doi":"10.1364/fio.2010.ftuz2","DOIUrl":"https://doi.org/10.1364/fio.2010.ftuz2","url":null,"abstract":"Optically-induced forces can lead to mechanical deformation for micro- or nano-structures. Scattering optical forces and gradient optical forces, both originating from the linear momentum of light, have been widely demonstrated. Here we suggest the use of gyroscopic optical forces, originating from the angular momentum of light, to facilitate mechanical deformation. We calculated gyroscopic precession by light, arising from the angular momentum of a circularly polarized beam of light propagating inside a bent nano-waveguide. This gyroscopic optical force can deform the structure, with right-handed and left-handed circular polarization inducing opposite displacements.","PeriodicalId":421895,"journal":{"name":"2010 International Conference on Optical MEMS and Nanophotonics","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123145790","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 : 2009-07-12DOI: 10.1109/OMEMS.2010.5672137
M. Tomes, T. Carmon
We report on an opto-mechanical resonator with vibration excited by compressive radiation pressure via Stimulated Brillouin Scattering [SBS]. We experimentally excite an 11 GHz mechanical whispering gallery mode [WGM] from an optical WGM. The mechanical vibration is detected via the red Doppler shifted light it scatters. We numerically solve the stress-strain equation to calculate the circumferentially circulating mechanical WGM and reveal mechanical WGMs with a variety of transverse shapes. The rate of vibration can be high irrespective of the fabrication tolerances as the driving forces are applied on an optical wavelength scale.
{"title":"Photonic MEMS vibrating at X-band rates (11 GHz)","authors":"M. Tomes, T. Carmon","doi":"10.1109/OMEMS.2010.5672137","DOIUrl":"https://doi.org/10.1109/OMEMS.2010.5672137","url":null,"abstract":"We report on an opto-mechanical resonator with vibration excited by compressive radiation pressure via Stimulated Brillouin Scattering [SBS]. We experimentally excite an 11 GHz mechanical whispering gallery mode [WGM] from an optical WGM. The mechanical vibration is detected via the red Doppler shifted light it scatters. We numerically solve the stress-strain equation to calculate the circumferentially circulating mechanical WGM and reveal mechanical WGMs with a variety of transverse shapes. The rate of vibration can be high irrespective of the fabrication tolerances as the driving forces are applied on an optical wavelength scale.","PeriodicalId":421895,"journal":{"name":"2010 International Conference on Optical MEMS and Nanophotonics","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133943536","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 : 1900-01-01DOI: 10.1109/omems.2010.5672121
Y. Ezoe, I. Mitsuishi, T. Moriyama, K. Mitsuda, M. Horade, S. Sugiyama, R. Riveros, T. Boggs, H. Yamaguchi, Y. Kanamori, J. Talghader, K. Morishita, K. Nakajima, R. Maeda
X-ray optics based on MEMS technologies can provide future astronomical missions with ultra light-weight and high-performance optical systems. Curvilinear micropores vertical to a thin wafer are made by using DRIE (Deep Reactive Ion Etching) or X-ray LIGA. The side walls are smoothed by using magnetic field assisted finishing and annealing technologies in order that the walls can reflect X-rays. Two or four such wafers are bent to spherical shapes with different curvature of radii and stacked, to focus parallel X-rays from astronomical objects by multiple reflections. In this paper, the concept and recent advances of the MEMS X-ray optics are reviewed.
基于MEMS技术的x射线光学可以为未来的天文任务提供超轻量化和高性能的光学系统。利用深度反应离子蚀刻(Deep Reactive Ion Etching)或x射线LIGA，在薄片上形成垂直的曲线微孔。通过使用磁场辅助精加工和退火技术，使侧壁平滑，以便墙壁可以反射x射线。两个或四个这样的晶圆被弯曲成具有不同半径曲率的球形并堆叠，通过多次反射聚焦来自天文物体的平行x射线。本文综述了MEMS x射线光学的概念和最新进展。
{"title":"MEMS-based X-ray optics for future astronomical missions","authors":"Y. Ezoe, I. Mitsuishi, T. Moriyama, K. Mitsuda, M. Horade, S. Sugiyama, R. Riveros, T. Boggs, H. Yamaguchi, Y. Kanamori, J. Talghader, K. Morishita, K. Nakajima, R. Maeda","doi":"10.1109/omems.2010.5672121","DOIUrl":"https://doi.org/10.1109/omems.2010.5672121","url":null,"abstract":"X-ray optics based on MEMS technologies can provide future astronomical missions with ultra light-weight and high-performance optical systems. Curvilinear micropores vertical to a thin wafer are made by using DRIE (Deep Reactive Ion Etching) or X-ray LIGA. The side walls are smoothed by using magnetic field assisted finishing and annealing technologies in order that the walls can reflect X-rays. Two or four such wafers are bent to spherical shapes with different curvature of radii and stacked, to focus parallel X-rays from astronomical objects by multiple reflections. In this paper, the concept and recent advances of the MEMS X-ray optics are reviewed.","PeriodicalId":421895,"journal":{"name":"2010 International Conference on Optical MEMS and Nanophotonics","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125866973","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：