Pub Date : 2012-10-04DOI: 10.1109/OMEMS.2012.6318819
A. Vijayakumar, S. Bhattacharya
Optical techniques are widely used for trapping of particles. One such technique involves the use of passive diffractive optical elements. Recently, a novel passive diffractive optical element, a spiral phase Fresnel zone plate (FZP) was proposed [1]. In this paper, we present an improved version, of the earlier reported element, that will allow for a compact optical configuration for generation of elliptical donut beams. This compact design enables easy insertion of the device into optical trapping experiments for micro level trapping. The proposed multilevel spiral phase FZP can be used for applications such as trapping by illuminating it with a narrow spectral width laser as shown in Fig. 1(a). The simulated 3-D structure of the proposed multilevel spiral phase FZP is shown in Fig. 1(b).
{"title":"Design of multilevel spiral phase Fresnel zone plates","authors":"A. Vijayakumar, S. Bhattacharya","doi":"10.1109/OMEMS.2012.6318819","DOIUrl":"https://doi.org/10.1109/OMEMS.2012.6318819","url":null,"abstract":"Optical techniques are widely used for trapping of particles. One such technique involves the use of passive diffractive optical elements. Recently, a novel passive diffractive optical element, a spiral phase Fresnel zone plate (FZP) was proposed [1]. In this paper, we present an improved version, of the earlier reported element, that will allow for a compact optical configuration for generation of elliptical donut beams. This compact design enables easy insertion of the device into optical trapping experiments for micro level trapping. The proposed multilevel spiral phase FZP can be used for applications such as trapping by illuminating it with a narrow spectral width laser as shown in Fig. 1(a). The simulated 3-D structure of the proposed multilevel spiral phase FZP is shown in Fig. 1(b).","PeriodicalId":347863,"journal":{"name":"2012 International Conference on Optical MEMS and Nanophotonics","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129686016","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 : 2012-10-04DOI: 10.1109/OMEMS.2012.6318835
F. Capasso, P. Genevet, N. Yu, M. Kats, F. Aieta, Z. Gaburro
Conventional optical components such as lenses and holograms rely on gradual phase shifts accumulated during light propagation to shape light beam. New degrees of freedom in optical design are attained by introducing in the optical path abrupt phase changes over the scale of the wavelength. In this talk, we will discuss the results presented in [1], where a two-dimensional array of plasmonic resonators in form of V-shape antennas with spatially varying phase response and sub-wavelength separation can imprint such phase discontinuities on propagating light.
{"title":"Broadband wavefront engineering with optical resonator arrays","authors":"F. Capasso, P. Genevet, N. Yu, M. Kats, F. Aieta, Z. Gaburro","doi":"10.1109/OMEMS.2012.6318835","DOIUrl":"https://doi.org/10.1109/OMEMS.2012.6318835","url":null,"abstract":"Conventional optical components such as lenses and holograms rely on gradual phase shifts accumulated during light propagation to shape light beam. New degrees of freedom in optical design are attained by introducing in the optical path abrupt phase changes over the scale of the wavelength. In this talk, we will discuss the results presented in [1], where a two-dimensional array of plasmonic resonators in form of V-shape antennas with spatially varying phase response and sub-wavelength separation can imprint such phase discontinuities on propagating light.","PeriodicalId":347863,"journal":{"name":"2012 International Conference on Optical MEMS and Nanophotonics","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124356637","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 : 2012-10-04DOI: 10.1109/OMEMS.2012.6318792
S. Rattanavarin, P. Sarapukdee, U. Jarujareet, N. Khemthongcharoen, A. Ruangpracha, R. Jolivot, I. Jung, D. López, M. Mandella, W. Piyawattanametha
We demonstrated a handheld multispectral fluorescence confocal microscope for cervical cancer diagnostic using dual-axis confocal microscope architecture and a microelectromechanical systems scanner. The real time images are acquired with frame rate up to 15 Hz.
{"title":"Handheld multispectral confocal microscope for cervical cancer diagnosis","authors":"S. Rattanavarin, P. Sarapukdee, U. Jarujareet, N. Khemthongcharoen, A. Ruangpracha, R. Jolivot, I. Jung, D. López, M. Mandella, W. Piyawattanametha","doi":"10.1109/OMEMS.2012.6318792","DOIUrl":"https://doi.org/10.1109/OMEMS.2012.6318792","url":null,"abstract":"We demonstrated a handheld multispectral fluorescence confocal microscope for cervical cancer diagnostic using dual-axis confocal microscope architecture and a microelectromechanical systems scanner. The real time images are acquired with frame rate up to 15 Hz.","PeriodicalId":347863,"journal":{"name":"2012 International Conference on Optical MEMS and Nanophotonics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116939504","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 : 2012-10-04DOI: 10.1109/OMEMS.2012.6318845
T. Chan, M. Megens, B. Yoo, C. Chang-Hasnain, Ming C. Wu, D. Horsley
We demonstrate closed-loop control of a MEMS phased array using an optical interferometer designed for in-situ phase-measurement. Phase resolution is comparable with commercial interferometers and we achieve beamsteering without calibration.
{"title":"Closed-loop phase control of an 8×8 MEMS mirror array via in-situ interferometry","authors":"T. Chan, M. Megens, B. Yoo, C. Chang-Hasnain, Ming C. Wu, D. Horsley","doi":"10.1109/OMEMS.2012.6318845","DOIUrl":"https://doi.org/10.1109/OMEMS.2012.6318845","url":null,"abstract":"We demonstrate closed-loop control of a MEMS phased array using an optical interferometer designed for in-situ phase-measurement. Phase resolution is comparable with commercial interferometers and we achieve beamsteering without calibration.","PeriodicalId":347863,"journal":{"name":"2012 International Conference on Optical MEMS and Nanophotonics","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121472089","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 : 2012-10-04DOI: 10.1109/OMEMS.2012.6318823
Yuanyuan Chen, Tianhe Ma, Bin Sun, Chao Pan, Xiaohan Sun
A driver system with thermal management for high power photonic crystal LEDs is investigated with the efficient heat dissipation solution, which can supply a stable output power of 80W with voltage ripple lower than 1%.
{"title":"Stable driver system for high-power photonic crystal light emitted diodes","authors":"Yuanyuan Chen, Tianhe Ma, Bin Sun, Chao Pan, Xiaohan Sun","doi":"10.1109/OMEMS.2012.6318823","DOIUrl":"https://doi.org/10.1109/OMEMS.2012.6318823","url":null,"abstract":"A driver system with thermal management for high power photonic crystal LEDs is investigated with the efficient heat dissipation solution, which can supply a stable output power of 80W with voltage ripple lower than 1%.","PeriodicalId":347863,"journal":{"name":"2012 International Conference on Optical MEMS and Nanophotonics","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115496075","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 : 2012-10-04DOI: 10.1109/OMEMS.2012.6318859
M. Khorasaninjead, N. Abedzadeh, J. Walia, S. Saini
Ordered arrays of vertical silicon nanowires reflect vivid colors. Sensitivity of the colors to refractive-index of the surrounding medium was investigated and a resolution of 1.6×10-3 was achieved; resulting in a low-cost simple refractive-index sensor.
{"title":"Colorful silicon nanowire arrays for sensing","authors":"M. Khorasaninjead, N. Abedzadeh, J. Walia, S. Saini","doi":"10.1109/OMEMS.2012.6318859","DOIUrl":"https://doi.org/10.1109/OMEMS.2012.6318859","url":null,"abstract":"Ordered arrays of vertical silicon nanowires reflect vivid colors. Sensitivity of the colors to refractive-index of the surrounding medium was investigated and a resolution of 1.6×10-3 was achieved; resulting in a low-cost simple refractive-index sensor.","PeriodicalId":347863,"journal":{"name":"2012 International Conference on Optical MEMS and Nanophotonics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115169862","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 : 2012-10-04DOI: 10.1109/OMEMS.2012.6318869
E. Keeler, S. Rydberg, V. Paeder, H. Herzig, D. Dickensheets, W. Nakagawa
Optical nanostructures have the potential to provide useful new functionalities, using materials and fabrication methods that are compatible with standard silicon-based processes. For example, it has been shown that a nanoscale grating coated with a metal layer produces polarization-selective reflectivity (Paeder, 2011 and Paeder et al., 2009), based on the combined effects of form birefringence and a resonant cavity (Tyan et al., 1997). In this work, we adapt this design approach to develop two devices optimized to operate around 1.55 μm wavelength: a polarizing beam splitter, and a polarization-selective reflector. Such devices are of particular interest as they may provide optical properties such as polarization selectivity or enhanced reflectivity using nanostructures compatible with optical micro-electro-mechanical systems (MEMS).
{"title":"Polarization-selective optical nanostructures for optical MEMS integration","authors":"E. Keeler, S. Rydberg, V. Paeder, H. Herzig, D. Dickensheets, W. Nakagawa","doi":"10.1109/OMEMS.2012.6318869","DOIUrl":"https://doi.org/10.1109/OMEMS.2012.6318869","url":null,"abstract":"Optical nanostructures have the potential to provide useful new functionalities, using materials and fabrication methods that are compatible with standard silicon-based processes. For example, it has been shown that a nanoscale grating coated with a metal layer produces polarization-selective reflectivity (Paeder, 2011 and Paeder et al., 2009), based on the combined effects of form birefringence and a resonant cavity (Tyan et al., 1997). In this work, we adapt this design approach to develop two devices optimized to operate around 1.55 μm wavelength: a polarizing beam splitter, and a polarization-selective reflector. Such devices are of particular interest as they may provide optical properties such as polarization selectivity or enhanced reflectivity using nanostructures compatible with optical micro-electro-mechanical systems (MEMS).","PeriodicalId":347863,"journal":{"name":"2012 International Conference on Optical MEMS and Nanophotonics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127268131","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 : 2012-10-04DOI: 10.1109/OMEMS.2012.6318789
M. Stockman
Surface plasmon amplification by stimulated emission of radiation (spaser) is a nanoscopic quantum generator of coherent local optical fields with high intensity. We will consider the latest development in the theory of spaser and review the large number of experimental data currently available Nanoplasmonics deals with collective electron dynamics on the surface of metal nanostructures, which arises due to excitations called surface plasmons [1, 2]. The surface plasmons localize and concentrate optical energy in nanoscopic regions creating highly enhanced local optical fields. They undergo ultrafast dynamics with timescales as short as a few hundred attoseconds [3]. We will start with a brief overview of the state of nanoplasmonics and its many applications [2].
{"title":"Spasing and amplification in plasmonic nanosystems","authors":"M. Stockman","doi":"10.1109/OMEMS.2012.6318789","DOIUrl":"https://doi.org/10.1109/OMEMS.2012.6318789","url":null,"abstract":"Surface plasmon amplification by stimulated emission of radiation (spaser) is a nanoscopic quantum generator of coherent local optical fields with high intensity. We will consider the latest development in the theory of spaser and review the large number of experimental data currently available Nanoplasmonics deals with collective electron dynamics on the surface of metal nanostructures, which arises due to excitations called surface plasmons [1, 2]. The surface plasmons localize and concentrate optical energy in nanoscopic regions creating highly enhanced local optical fields. They undergo ultrafast dynamics with timescales as short as a few hundred attoseconds [3]. We will start with a brief overview of the state of nanoplasmonics and its many applications [2].","PeriodicalId":347863,"journal":{"name":"2012 International Conference on Optical MEMS and Nanophotonics","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126857932","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 : 2012-10-04DOI: 10.1109/OMEMS.2012.6318860
P. Liebetraut, S. Petsch, H. Zappe
We propose a lens fabrication process for reaction injection molding of elastomeric micro-lenses. The versatile and flexible process allows manufacturing a broad spectrum of lens shapes, including compound achromatic lenses, entirely consisting of PDMS.
{"title":"A versatile fabrication process for reaction injection molded elastomeric micro-lenses","authors":"P. Liebetraut, S. Petsch, H. Zappe","doi":"10.1109/OMEMS.2012.6318860","DOIUrl":"https://doi.org/10.1109/OMEMS.2012.6318860","url":null,"abstract":"We propose a lens fabrication process for reaction injection molding of elastomeric micro-lenses. The versatile and flexible process allows manufacturing a broad spectrum of lens shapes, including compound achromatic lenses, entirely consisting of PDMS.","PeriodicalId":347863,"journal":{"name":"2012 International Conference on Optical MEMS and Nanophotonics","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124464516","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 : 2012-10-04DOI: 10.1109/OMEMS.2012.6318824
K. Yoshii, G. Hashiguchi, M. Kememura, H. Fujita
We have been developing the molecular tweezers that can retrieve a minute amount of molecules from solution such as DNA. Since the retrieved molecules form a bridge between two tips of tweezers, we can examine their electrical characteristics in atmospheric condition. The bridge also serves as a scaffold for nano particles. Figure 1 shows an example of a retrieved DNA wire modified by palladium nano particles of 3nm in diameter. We have found that the palladium particles enhance the electrical conductivity showing 74Ωcm in resistivity. In addition to electromechanical properties, we are interested in optical characterization of retrieved materials by molecular tweezers. To introduce probing light to tweezers' tips, we propose new molecular tweezers integrated with optical waveguides.
{"title":"Molecular tweezers with optical fiber function","authors":"K. Yoshii, G. Hashiguchi, M. Kememura, H. Fujita","doi":"10.1109/OMEMS.2012.6318824","DOIUrl":"https://doi.org/10.1109/OMEMS.2012.6318824","url":null,"abstract":"We have been developing the molecular tweezers that can retrieve a minute amount of molecules from solution such as DNA. Since the retrieved molecules form a bridge between two tips of tweezers, we can examine their electrical characteristics in atmospheric condition. The bridge also serves as a scaffold for nano particles. Figure 1 shows an example of a retrieved DNA wire modified by palladium nano particles of 3nm in diameter. We have found that the palladium particles enhance the electrical conductivity showing 74Ωcm in resistivity. In addition to electromechanical properties, we are interested in optical characterization of retrieved materials by molecular tweezers. To introduce probing light to tweezers' tips, we propose new molecular tweezers integrated with optical waveguides.","PeriodicalId":347863,"journal":{"name":"2012 International Conference on Optical MEMS and Nanophotonics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130924002","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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