搜索结果: 1-15 共查到“光学工程 beam”相关记录47条 . 查询时间(0.203 秒)
MIT.nano receives grant to acquire focused ion beam scanning electron microscope（图）
聚焦离子束 扫描电子显微镜 双束纳米制造平台
2023/6/9
The VELION FIB-SEM, a next-generation dual-beam nanofabrication platform located in MIT.nano, will become a permanent part of the facility’s characterization capabilities, thanks in part to a Major Re...
2018年SPIE激光谐振器，微谐振器和光束控制会议（SPIE Laser Resonators,Microresonators,and Beam Control XX）
2018年 SPIE 激光谐振器，微谐振器和光束控制 会议
2017/10/26
2018年SPIE激光谐振器，微谐振器和光束控制会议（SPIE Laser Resonators,Microresonators,and Beam Control XX）。
单模-多模光纤产生系列Bottle beam
Bottle beam 单模-多模光纤结构 多模干涉效应 仿真实验
2016/8/23
提出一种利用多模光纤的多模干涉效应在自由空间中获得多个局域空心光（Bottle beam）的新方法。单模-多模光纤结构是一段多模光纤无偏心地连接到一段单模光纤上,光由单模光纤传输到多模光纤激发产生一系列的LP0，n 模,由于多模干涉效应在多模光纤中相互叠加，当入射到自由空间后形成了多个Bottle beam。文中对光束传输过程进行理论分析并利用Matlab 进行仿真实验, 结果表明在自由空间中可以...
Controlling the Flow of Microscopic Particles—The Role of Beam Size
Optical Manipulation Optical Tweezers Directional Flow
2013/1/30
Flow of micro particles and fluids is important in many microscopic systems. Here we present details of our finding of a directional flow of micro particles due to a single beam optical trap. It was f...
Bragg-Angle Diffraction in Slant Gratings Fabricated by Single-Beam Interference Lithography
Slant Grating Single-Beam Interference Lithography Bragg-Angle Diffraction
2013/1/30
A single-beam interference-lithography scheme is demonstrated for the fabrication of large-area slant gratings, which requires exposure of the photoresist thin film spin-coated on a glass plate with p...
Design and Analyses of a Planar Zoom Module as a Beam Expander
planar zoom module beam expander planar optics planar integrated free space optics diffractive optics
2011/11/25
A novel planar zoom module (PZM) is presented in this article. The PZM is realized by integrating optical elements on its surfaces with the folding optical axis and performing the zoom function by tra...
Binary Phase Micro-Grating and Polarization Beam Splitter for Free-Space Micro Optical Pickups
2011/11/24
A pop-up binary-phase micrograting and a pop-up micro polarization beamsplitter, for potential use in micro-optical pickups, have been realized on a single silicon chip using a two-layer polysilicon a...
Hybrid Optical Beam-Former in Receiver Mode
Chirped Fiber Grating Group Delay Ripple Microwave Photonics Optical Phased Array Antennas
2013/1/30
In this paper, an optical beam-former in receiving mode has been proposed and experimentally demonstrated. The requirement in system's hardware has been dramatically reduced using a hybrid approach be...
Compact InGaAsP/InP Flattened Ring Lasers with Etched Beam Splitters
Resonators Photonic integrated circuits
2015/5/21
We present results from novel compact InGaAsP/InP based flattened micro-ring resonators and lasers. Resonators with circumferences 30-300μm by using etched beam-splitters (EBS) are demonstrated. EBS c...
Generation of Ultra-wideband Doublet Pulses Based on Kerr Shutter Using an Elliptically Polarized Beam in Bismuth Oxide-based Nonlinear Optical Fiber
Ultra-wideband Doublet Pulses Kerr Shutter Elliptically Polarized Beam
2015/5/15
We demonstrate a nonlinear signal-processor incorporating a Bismuth-based nonlinear fiber for UWB doublet pulse generation. High quality of doublet pulses is readily generated from the signal-processo...
Broad angle and frequency tunable photoniccrystal-polarization beam splitterbased on negative refraction:Transition from right-handedto left-handed medium
negative refraction photonic crystals negative index medium equi-frequency surface
2011/5/5
A new design of a broad angle photonic crystal polarization beam splitter (PhC-PBS) with
frequency tunable index of refraction, i.e. varying from positive to negative, is presented.
Designed PhC-PBS...
High focusing of radially polarized Bessel-modulated Gaussian beam
focusing properties Bessel-modulated Gaussian beam vector diffraction theory
2011/5/9
The focusing properties of radially polarized Bessel-modulated Gaussian (QBG) beam are
theoretically investigated in detail by vector diffraction theory. The QBG beam contains an optical
vortex. Cal...
Nanosecond zero-order pulsed Bessel beam generated from unstable resonator based on an axicon
Unstable resonator Axicon Zero-order Bessel–Gauss beams
2013/7/2
We present what we believe the first experimental observation of a nanosecond zero order pulsed Bessel beam generated from an unstable resonator based on an axicon. The field distribution at the outpu...
Direct Fan-Beam Reconstruction Algorithm via Filtered Backprojection for Differential Phase-Contrast Computed Tomography
Direct Fan-Beam Reconstruction Algorithm Filtered Backprojection Differential Phase-Contrast Computed Tomography
2009/9/4
Recently, a novel data acquisition method has been proposed and experimentally implemented for differential phase-contrast computed tomography (DPC-CT), in which a conventional X-ray tube and a Talbot...
Gaussian beam diffraction in inhomogeneous media of cylindrical symmetry
Gaussian beam diffraction paraxial complex geometrical optics inhomogeneous media of cylindrical symmetry
2011/5/9
The method of paraxial complex geometrical optics (PCGO) is presented, which describes
Gaussian beam (GB) diffraction in smoothly inhomogeneous media of cylindrical symmetry,
including fibers. PCGO ...