Pub Date : 2010-02-25DOI: 10.1109/PHOTWTM.2010.5421924
Z. Mi, F. Li
Recently, rolled-up semiconductor tubes, formed when a coherently strained semiconductor bilayer is selectively released from the host substrate, have emerged as a promising technique to realize high performance optical micro and nanocavity devices [1–6]. Combining the advantages of both top-down and bottom-up fabrication processes, this approach offers an exceptional flexibility for achieving semiconductor micro- and nanotube structures with an epitaxially smooth surface and well controlled diameters and wall thicknesses using a single photolithography step. However, lasing in such tube structures has hitherto not been demonstrated. In this context, we have performed a detailed investigation of the fabrication and characterization of rolled-up micro- and nanotubes, with the incorporation of self-organized InGaAs/GaAs quantum dots as the gain media. We have achieved, for the first time, lasing in rolled-up semiconductor tubes at room temperature. The devices are characterized an ultralow threshold power (~ 4 μW), an intrinsic lasing linewidth of ~ 0.2–0.3 nm, and a linear polarization with the electric field parallel to the tube surface.
{"title":"Rolled-up InGaAs/GaAs quantum dot micro- and nanotube lasers","authors":"Z. Mi, F. Li","doi":"10.1109/PHOTWTM.2010.5421924","DOIUrl":"https://doi.org/10.1109/PHOTWTM.2010.5421924","url":null,"abstract":"Recently, rolled-up semiconductor tubes, formed when a coherently strained semiconductor bilayer is selectively released from the host substrate, have emerged as a promising technique to realize high performance optical micro and nanocavity devices [1–6]. Combining the advantages of both top-down and bottom-up fabrication processes, this approach offers an exceptional flexibility for achieving semiconductor micro- and nanotube structures with an epitaxially smooth surface and well controlled diameters and wall thicknesses using a single photolithography step. However, lasing in such tube structures has hitherto not been demonstrated. In this context, we have performed a detailed investigation of the fabrication and characterization of rolled-up micro- and nanotubes, with the incorporation of self-organized InGaAs/GaAs quantum dots as the gain media. We have achieved, for the first time, lasing in rolled-up semiconductor tubes at room temperature. The devices are characterized an ultralow threshold power (~ 4 μW), an intrinsic lasing linewidth of ~ 0.2–0.3 nm, and a linear polarization with the electric field parallel to the tube surface.","PeriodicalId":367324,"journal":{"name":"2010 IEEE Photonics Society Winter Topicals Meeting Series (WTM)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123715212","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 : 2010-02-25DOI: 10.1109/PHOTWTM.2010.5421957
Ting-Wei Su, S. Isikman, W. Bishara, Derek K. Tseng, A. Erlinger, A. Ozcan
A multi-angle lensfree holographic imaging platform capable of resolving the depth location of cells or microparticles on a chip, with an accuracy much greater than that allowed by the detection numerical aperture is presented. This multi-angle holographic imaging approach could be especially useful for improving the throughput of on-chip imaging and characterization of cells within microfluidic systems.
{"title":"Multi-angle lensless holography for depth resolved high-throughput imaging of cells on a chip","authors":"Ting-Wei Su, S. Isikman, W. Bishara, Derek K. Tseng, A. Erlinger, A. Ozcan","doi":"10.1109/PHOTWTM.2010.5421957","DOIUrl":"https://doi.org/10.1109/PHOTWTM.2010.5421957","url":null,"abstract":"A multi-angle lensfree holographic imaging platform capable of resolving the depth location of cells or microparticles on a chip, with an accuracy much greater than that allowed by the detection numerical aperture is presented. This multi-angle holographic imaging approach could be especially useful for improving the throughput of on-chip imaging and characterization of cells within microfluidic systems.","PeriodicalId":367324,"journal":{"name":"2010 IEEE Photonics Society Winter Topicals Meeting Series (WTM)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127024139","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 : 2010-02-25DOI: 10.1109/PHOTWTM.2010.5421922
K. Atlasov, A. Surrente, M. Ćalić, K. Karlsson, P. Gallo, M. Felici, B. Dwir, A. Rudra, E. Kapon
Based on site- and energy-controlled quantum wires (QWR) and quantum dots (QD), diverse photonic-crystal microcavity laser systems are proposed and discussed. Results demonstrating QWR lasing, cavity coupling and QD ordered arrays are presented.
{"title":"Site-controlled quantum-wire and quantum-dot photonic-crystal microcavity lasers","authors":"K. Atlasov, A. Surrente, M. Ćalić, K. Karlsson, P. Gallo, M. Felici, B. Dwir, A. Rudra, E. Kapon","doi":"10.1109/PHOTWTM.2010.5421922","DOIUrl":"https://doi.org/10.1109/PHOTWTM.2010.5421922","url":null,"abstract":"Based on site- and energy-controlled quantum wires (QWR) and quantum dots (QD), diverse photonic-crystal microcavity laser systems are proposed and discussed. Results demonstrating QWR lasing, cavity coupling and QD ordered arrays are presented.","PeriodicalId":367324,"journal":{"name":"2010 IEEE Photonics Society Winter Topicals Meeting Series (WTM)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116073309","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 : 2010-02-25DOI: 10.1109/PHOTWTM.2010.5421950
D. Li, C. Ning
We considered the net modal gain and the confinement factors for semiconductor gain and metal loss in a metal-semiconductor-metal waveguide. We found that these confinement factors can have extraordinarily large values and can be gain-dependent and strongly enhanced by pumping in the semiconductor.
{"title":"Novel features of the confinement factor in a plasmonic waveguide","authors":"D. Li, C. Ning","doi":"10.1109/PHOTWTM.2010.5421950","DOIUrl":"https://doi.org/10.1109/PHOTWTM.2010.5421950","url":null,"abstract":"We considered the net modal gain and the confinement factors for semiconductor gain and metal loss in a metal-semiconductor-metal waveguide. We found that these confinement factors can have extraordinarily large values and can be gain-dependent and strongly enhanced by pumping in the semiconductor.","PeriodicalId":367324,"journal":{"name":"2010 IEEE Photonics Society Winter Topicals Meeting Series (WTM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116441211","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 : 2010-02-25DOI: 10.1109/PHOTWTM.2010.5421932
A. Hosseini, D. Kwong, Yazhao Liu, Ray T. Chen
We present a design methodology for optimized highly dispersive photonic crystal waveguide delay lines. The results indicate that higher group-indices lower the total propagation loss as long as perturbative backscattering is the dominant loss mechanism.
{"title":"On the design of highly dispersive photonic crystal waveguides for optical delay lines","authors":"A. Hosseini, D. Kwong, Yazhao Liu, Ray T. Chen","doi":"10.1109/PHOTWTM.2010.5421932","DOIUrl":"https://doi.org/10.1109/PHOTWTM.2010.5421932","url":null,"abstract":"We present a design methodology for optimized highly dispersive photonic crystal waveguide delay lines. The results indicate that higher group-indices lower the total propagation loss as long as perturbative backscattering is the dominant loss mechanism.","PeriodicalId":367324,"journal":{"name":"2010 IEEE Photonics Society Winter Topicals Meeting Series (WTM)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131755385","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 : 2010-02-25DOI: 10.1109/PHOTWTM.2010.5421987
B. Schulkin, T. Tongue, D. Brigada, B. Clough, J. Dai, X. Zhang
Development and application of real-time (> 5Hz) first-surface and bulk reflection measurements using the mini-Z THz Time-Domain-Spectrometer (TDS) are presented for standoff detection and identification of organic, pharmaceutical and energetic compounds. A non-iterative baseline correction for scattering is applied to real-time data to expand THz sensing across a wider range of sample preparation techniques, including pressed pellets, powders and other irregular surface geometries. Performance is assessed using selected samples of organic, pharmaceutical and energetic compounds with absorption peak positions in the 0.1–3.5 THz range, with results >99% confidence without the use of HDPE sample references using standard correlation and partial-least-squares (PLS) techniques. The current state of THz Air Photonics, where selected gases are used as both THz emitter and detector, and how it relates to real-time identification will also be presented.
{"title":"Progress toward handheld THz spectroscopy and THz Air Photonics","authors":"B. Schulkin, T. Tongue, D. Brigada, B. Clough, J. Dai, X. Zhang","doi":"10.1109/PHOTWTM.2010.5421987","DOIUrl":"https://doi.org/10.1109/PHOTWTM.2010.5421987","url":null,"abstract":"Development and application of real-time (> 5Hz) first-surface and bulk reflection measurements using the mini-Z THz Time-Domain-Spectrometer (TDS) are presented for standoff detection and identification of organic, pharmaceutical and energetic compounds. A non-iterative baseline correction for scattering is applied to real-time data to expand THz sensing across a wider range of sample preparation techniques, including pressed pellets, powders and other irregular surface geometries. Performance is assessed using selected samples of organic, pharmaceutical and energetic compounds with absorption peak positions in the 0.1–3.5 THz range, with results >99% confidence without the use of HDPE sample references using standard correlation and partial-least-squares (PLS) techniques. The current state of THz Air Photonics, where selected gases are used as both THz emitter and detector, and how it relates to real-time identification will also be presented.","PeriodicalId":367324,"journal":{"name":"2010 IEEE Photonics Society Winter Topicals Meeting Series (WTM)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133579106","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 : 2010-02-25DOI: 10.1533/9780857096494.2.436
T. Yasui
A new method for precise frequency measurement of continuous-wave THz wave is proposed by using a THz frequency comb of photocurrent. Precision of the frequency measurement was 2.2×10−11 within the range of 75–110 GHz.
{"title":"Terahertz frequency metrology based on frequency comb techniques","authors":"T. Yasui","doi":"10.1533/9780857096494.2.436","DOIUrl":"https://doi.org/10.1533/9780857096494.2.436","url":null,"abstract":"A new method for precise frequency measurement of continuous-wave THz wave is proposed by using a THz frequency comb of photocurrent. Precision of the frequency measurement was 2.2×10<sup>−11</sup> within the range of 75–110 GHz.","PeriodicalId":367324,"journal":{"name":"2010 IEEE Photonics Society Winter Topicals Meeting Series (WTM)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134424840","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 : 2010-02-25DOI: 10.1109/PHOTWTM.2010.5421960
Thomas Gutzler, T. Hillman, S. Alexandrov, D. Sampson
We demonstrate superresolved, wide-field, reflectance imaging using synthetic-aperture Fourier holography. By applying a correlation scheme applicable to scattering samples, we show coherent synthesis of large numbers of holograms into reflectance images of, for the first time, tissue sections.
{"title":"High resolution, wide-field microscopic imaging of biological tissue by coherent synthesis of Fourier holograms","authors":"Thomas Gutzler, T. Hillman, S. Alexandrov, D. Sampson","doi":"10.1109/PHOTWTM.2010.5421960","DOIUrl":"https://doi.org/10.1109/PHOTWTM.2010.5421960","url":null,"abstract":"We demonstrate superresolved, wide-field, reflectance imaging using synthetic-aperture Fourier holography. By applying a correlation scheme applicable to scattering samples, we show coherent synthesis of large numbers of holograms into reflectance images of, for the first time, tissue sections.","PeriodicalId":367324,"journal":{"name":"2010 IEEE Photonics Society Winter Topicals Meeting Series (WTM)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134592466","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 : 2010-02-25DOI: 10.1109/PHOTWTM.2010.5421928
Shi-jiang Wang, Yongzhen Huang, Yuede Yang, Jian-Dong Lin, Yun Du State
Electrically injected InGaAsP/InP microcylinder lasers connected to an output waveguide are fabricated. Observed mode jump versus temperature with an interval of two times of longitudinal mode interval is agreement with that predicted by mode coupling.
{"title":"Directional emission InGaAsP/InP mirocylinder lasers","authors":"Shi-jiang Wang, Yongzhen Huang, Yuede Yang, Jian-Dong Lin, Yun Du State","doi":"10.1109/PHOTWTM.2010.5421928","DOIUrl":"https://doi.org/10.1109/PHOTWTM.2010.5421928","url":null,"abstract":"Electrically injected InGaAsP/InP microcylinder lasers connected to an output waveguide are fabricated. Observed mode jump versus temperature with an interval of two times of longitudinal mode interval is agreement with that predicted by mode coupling.","PeriodicalId":367324,"journal":{"name":"2010 IEEE Photonics Society Winter Topicals Meeting Series (WTM)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134643725","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 : 2010-02-25DOI: 10.1109/PHOTWTM.2010.5421944
Jonathan T. C. Liu, M. Mandella, N. Loewke, H. Haeberle, H. Ra, W. Piyawattanametha, O. Solgaard, G. Kino, C. Contag
A 1.8-mm diameter gradient-index relay lens has been incorporated into a miniature dual-axis confocal microscope for image-guided surgery. A biaxial MEMS mirror is actuated at resonance along each axis to create a non-repeating Lissajous scan pattern for achieving large fields of view.
{"title":"Surgical dual-axis confocal microscope for brain tumor resection","authors":"Jonathan T. C. Liu, M. Mandella, N. Loewke, H. Haeberle, H. Ra, W. Piyawattanametha, O. Solgaard, G. Kino, C. Contag","doi":"10.1109/PHOTWTM.2010.5421944","DOIUrl":"https://doi.org/10.1109/PHOTWTM.2010.5421944","url":null,"abstract":"A 1.8-mm diameter gradient-index relay lens has been incorporated into a miniature dual-axis confocal microscope for image-guided surgery. A biaxial MEMS mirror is actuated at resonance along each axis to create a non-repeating Lissajous scan pattern for achieving large fields of view.","PeriodicalId":367324,"journal":{"name":"2010 IEEE Photonics Society Winter Topicals Meeting Series (WTM)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115625843","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：