Robustness to misalignment of low-cost, compact quantitative phase imaging architectures [0.03%]
低成本且紧凑的定量相位成像架构在对准误差下的鲁棒性研究
Catherine R M Fitzpatrick,Abby Wilson,Travis W Sawyer et al.
Catherine R M Fitzpatrick et al.
Non-interferometric approaches to quantitative phase imaging could enable its application in low-cost, miniaturised settings such as capsule endoscopy. We present two possible architectures and both analyse and mitigate the effect of sensor...
Noise and bias in optical coherence tomography intensity signal decorrelation [0.03%]
光学相干层析强度信号去相关性的噪声与偏差
Néstor Uribe-Patarroyo,Anouk L Post,Sebastián Ruiz-Lopera et al.
Néstor Uribe-Patarroyo et al.
Functional optical coherence tomography (OCT) imaging based on the decorrelation of the intensity signal has been used extensively in angiography and is finding use in flowmetry and therapy monitoring. In this work, we present a rigorous an...
Optics-free imaging of complex, non-sparse and color QR-codes with deep neural networks [0.03%]
基于深度神经网络的复杂彩色QR码光学无损图像获取技术
Soren Nelson,Evan Scullion,Rajesh Menon
Soren Nelson
We demonstrate optics-free imaging of complex color and monochrome QR-codes using a bare image sensor and trained artificial neural networks (ANNs). The ANN is trained to interpret the raw sensor data for human visualization. The image sens...
Behrang H Hamadani,Jonathan Seppala,Clarence Zarobila
Behrang H Hamadani
Additive manufacturing methods based on photopolymerization offer a promising potential for fabrication of high quality, highly transparent optical components. One use of these technologies involves fabrication of parts for very specific an...
Scattering of a damped inhomogeneous plane wave by a particle in a weakly absorbing medium [0.03%]
弱吸收介质中粒子散射有耗非均匀平面波
Michael I Mishchenko,Maxim A Yurkin,Brian Cairns
Michael I Mishchenko
We use the volume integral equation formulation to consider frequency-domain electromagnetic scattering of a damped inhomogeneous plane wave by a particle immersed in an absorbing medium. We show that if absorption in the host medium is suf...
Demonstration of a polarization-entangled photon-pair source based on phase-modulated PPLN [0.03%]
基于相位调制PPLN的偏振纠缠光子对源的实现
Paulina S Kuo,Varun B Verma,Sae Woo Nam
Paulina S Kuo
We develop and demonstrate a source of polarization-entangled photon pairs using spontaneous parametric down-conversion (SPDC) in domain-engineered, periodically poled lithium niobate (PPLN) at telecom wavelengths. Pumped at 775 nm, this do...
Electro-optic frequency combs generated via direct digital synthesis applied to sub-Doppler spectroscopy [0.03%]
通过直接数字合成产生的电光频率梳在次多普勒光谱学中的应用
David A Long,Benjamin J Reschovsky
David A Long
Direct digital synthesis in concert with an electro-optic phase modulator was employed to generate optical frequency combs with tooth spacings as low as 100 Hz. These combs were utilized to probe electromagnetically induced transparency (EI...
Sensitivity and phase response of FBG based acousto-optic sensors for real-time MRI applications [0.03%]
基于光纤光栅的声光传感器在实时MRI中的灵敏度及相位响应研究
Yusuf Samet Yaras,Dursun Korel Yildirim,Ozgur Kocaturk et al.
Yusuf Samet Yaras et al.
Fiber Bragg grating (FBG) based sensors have recently been introduced to the field of magnetic resonance imaging (MRI). Real-time MRI applications demand highly amplitude and phase sensitive MRI compatible sensors. Thus, a model and detaile...
Mark-Alexander Henn,Hui Zhou,Bryan M Barnes
Mark-Alexander Henn
Computer vision and classification methods have become increasingly wide-spread in recent years due to ever-increasing access to computation power. Advances in semiconductor devices are the basis for this growth, but few publications have p...
Using silica fiber coupling to extend superconducting nanowire single-photon detectors into the infrared [0.03%]
利用硅石光纤耦合将超导纳米线单光子探测器扩展到红外波段
Paulina S Kuo
Paulina S Kuo
There is growing interest in superconducting nanowire single-photon detectors (SNSPDs) for their high detection efficiency, low noise, and broad wavelength-sensitivity range. Typically, silica fibers are used to deliver light to the detecto...