Progress in Optics最新文献_第3页

Advanced Raman Spectroscopy Based on Transfer Learning by Using a Convolutional Neural Network for Personalized Colorectal Cancer Diagnosis 基于卷积神经网络迁移学习的先进拉曼光谱在个体化结直肠癌诊断中的应用

3区物理与天体物理

Progress in Optics Pub Date : 2023-04-27 DOI: 10.3390/opt4020022

D. Kalatzis, E. Spyratou, M. Karnachoriti, M. Kouri, S. Orfanoudakis, Nektarios Koufopoulos, A. Pouliakis, N. Danias, I. Seimenis, A. Kontos, E. Efstathopoulos

{"title":"Advanced Raman Spectroscopy Based on Transfer Learning by Using a Convolutional Neural Network for Personalized Colorectal Cancer Diagnosis","authors":"D. Kalatzis, E. Spyratou, M. Karnachoriti, M. Kouri, S. Orfanoudakis, Nektarios Koufopoulos, A. Pouliakis, N. Danias, I. Seimenis, A. Kontos, E. Efstathopoulos","doi":"10.3390/opt4020022","DOIUrl":"https://doi.org/10.3390/opt4020022","url":null,"abstract":"Advanced Raman spectroscopy (RS) systems have gained new interest in the field of medicine as an emerging tool for in vivo tissue discrimination. The coupling of RS with artificial intelligence (AI) algorithms has given a boost to RS to analyze spectral data in real time with high specificity and sensitivity. However, limitations are still encountered due to the large amount of clinical data which are required for the pre-training process of AI algorithms. In this study, human healthy and cancerous colon specimens were surgically resected from different sites of the ascending colon and analyzed by RS. Two transfer learning models, the one-dimensional convolutional neural network (1D-CNN) and the 1D–ResNet transfer learning (1D-ResNet) network, were developed and evaluated using a Raman open database for the pre-training process which consisted of spectra of pathogen bacteria. According to the results, both models achieved high accuracy of 88% for healthy/cancerous tissue discrimination by overcoming the limitation of the collection of a large number of spectra for the pre-training process. This gives a boost to RS as an adjuvant tool for real-time biopsy and surgery guidance.","PeriodicalId":54548,"journal":{"name":"Progress in Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78432363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Temporal Cavity Soliton Interaction in Passively Mode-Locked Semiconductor Lasers 被动锁模半导体激光器中的时间腔孤子相互作用

3区物理与天体物理

Progress in Optics Pub Date : 2023-04-19 DOI: 10.3390/opt4030031

A. Vladimirov

引用次数: 1

Photonic Crystals Fabricated by Two-Photon Polymerization with Mechanical Defects 具有机械缺陷的双光子聚合制备光子晶体

3区物理与天体物理

Progress in Optics Pub Date : 2023-04-04 DOI: 10.3390/opt4020021

V. Stinson, Nuren Shuchi, Dustin Louisos, Micheal McLamb, G. Boreman, T. Hofmann

{"title":"Photonic Crystals Fabricated by Two-Photon Polymerization with Mechanical Defects","authors":"V. Stinson, Nuren Shuchi, Dustin Louisos, Micheal McLamb, G. Boreman, T. Hofmann","doi":"10.3390/opt4020021","DOIUrl":"https://doi.org/10.3390/opt4020021","url":null,"abstract":"One-dimensional photonic crystals have been used in sensing applications for decades, due to their ability to induce highly reflective photonic bandgaps. In this study, one-dimensional photonic crystals with alternating low- and high-density layers were fabricated from a single photosensitive polymer (IP-Dip) by two-photon polymerization. The photonic crystals were modified to include a central defect layer with different elastic properties compared to the surrounding layers, for the first time. It was observed that the defect mode resonance can be controlled by compressive force. Very good agreement was found between the experimentally measured spectra and the model data. The mechanical properties of the flexure design used in the defect layer were calculated. The calculated spring constant is of similar magnitude to those reported for microsprings fabricated on this scale using two-photon polymerization. The results of this study demonstrate the successful control of a defect resonance in one-dimensional photonic crystals fabricated by two-photon polymerization by mechanical stimuli, for the first time. Such a structure could have applications in fields, such as micro-robotics, and in micro-opto–electro–mechanical systems (MOEMSs), where optical sensing of mechanical fluctuations is desired.","PeriodicalId":54548,"journal":{"name":"Progress in Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76988339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

GANs-Based Intracoronary Optical Coherence Tomography Image Augmentation for Improved Plaques Characterization Using Deep Neural Networks 基于高斯的冠状动脉内光学相干断层成像图像增强，改进斑块表征的深度神经网络

3区物理与天体物理

Progress in Optics Pub Date : 2023-03-29 DOI: 10.3390/opt4020020

H. Zafar, J. Zafar, F. Sharif

{"title":"GANs-Based Intracoronary Optical Coherence Tomography Image Augmentation for Improved Plaques Characterization Using Deep Neural Networks","authors":"H. Zafar, J. Zafar, F. Sharif","doi":"10.3390/opt4020020","DOIUrl":"https://doi.org/10.3390/opt4020020","url":null,"abstract":"Data augmentation using generative adversarial networks (GANs) is vital in the creation of new instances that include imaging modality tasks for improved deep learning classification. In this study, conditional generative adversarial networks (cGANs) were used on a dataset of OCT (Optical Coherence Tomography)-acquired images of coronary atrial plaques for synthetic data creation for the first time, and further validated using deep learning architecture. A new OCT images dataset of 51 patients marked by three professionals was created and programmed. We used cGANs to synthetically populate the coronary aerial plaques dataset by factors of 5×, 10×, 50× and 100× from a limited original dataset to enhance its volume and diversification. The loss functions for the generator and the discriminator were set up to generate perfect aliases. The augmented OCT dataset was then used in the training phase of the leading AlexNet architecture. We used cGANs to create synthetic images and envisaged the impact of the ratio of real data to synthetic data on classification accuracy. We illustrated through experiments that augmenting real images with synthetic images by a factor of 50× during training helped improve the test accuracy of the classification architecture for label prediction by 15.8%. Further, we performed training time assessments against a number of iterations to identify optimum time efficiency. Automated plaques detection was found to be in conformity with clinical results using our proposed class conditioning GAN architecture.","PeriodicalId":54548,"journal":{"name":"Progress in Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72888385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Degree of Polarization of Cathodoluminescence from a GaAs Facet in the Vicinity of an SiN Stripe 在SiN条纹附近的GaAs面阴极发光的极化程度

3区物理与天体物理

Progress in Optics Pub Date : 2023-03-23 DOI: 10.3390/opt4020019

D. Cassidy, J. Landesman, Merwan Mokhtari, P. Pagnod-Rossiaux, M. Fouchier, C. Monachon

引用次数: 0

Transition of Orbital Electrons by Electromagnetic Waves 电磁波对轨道电子的跃迁

3区物理与天体物理

Progress in Optics Pub Date : 2023-03-23 DOI: 10.3390/opt4020018

M. Muhibbullah, Yasuro Ikuma

{"title":"Transition of Orbital Electrons by Electromagnetic Waves","authors":"M. Muhibbullah, Yasuro Ikuma","doi":"10.3390/opt4020018","DOIUrl":"https://doi.org/10.3390/opt4020018","url":null,"abstract":"An electromagnetic (EM) wave is a form of continuous energy, of which both the frequency and the amplitude are parts, as shown in a recent report. All the facts relating to the photoelectric effect are explained by the new modified EM wave concept. Since the photon concept is not able to explain the intensity effect and the ejection direction clearly, it cannot be used to explain nonlinear optical phenomena clearly. The current understanding of the interaction process between orbital electrons and light may not be realistic. In this work, the electron transition process is explained with the new modified EM wave concept. The orbital electrons of a material rotate circularly by the sinusoidal fields of the EM waves. In this way, the electrons absorb light energy as rotational kinetic energy. During the first rotational cycle, the electrons with large enough radii face different potential barriers in neighboring orbits. Consequently, the electrons’ speed is obstructed, and the electrons move behind their natural places (phase); in other words, the electrons cannot follow the required phase of EM waves. Thus, sufficient energetic electrons are scattered from their orbit. The high-intensity EM waves reach the inner orbits of the targeted atom and transit electrons from different orbits. The light can regenerate through processes with different frequencies. The frequency of the regenerated light can be higher than that of primary light, depending on the energy (frequency and amplitude) of the primary light. The results of previous reports match the prediction of the new concept of EM waves. The new wave concept may be able to explain all photonic behaviors of light clearly.","PeriodicalId":54548,"journal":{"name":"Progress in Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75526156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonperturbative Generation of Harmonics by Nanometer-Scale Localized Electronic States on the Surface of Bulk Materials and Nano-Films 块体材料和纳米薄膜表面纳米局域电子态谐波的非摄动产生

3区物理与天体物理

Progress in Optics Pub Date : 2023-03-13 DOI: 10.3390/opt4010017

J. Seres, E. Seres, E. Céspedes, L. Martínez-de-Olcoz, M. Zabala, T. Schumm

引用次数: 1

Optimized Design and Simulation of Optical Section in Electro-Reflective Modulators Based on Photonic Crystals Integrated with Multi-Quantum-Well Structures 基于多量子阱结构集成光子晶体的电反射调制器光学截面优化设计与仿真

3区物理与天体物理

Progress in Optics Pub Date : 2023-03-01 DOI: 10.3390/opt4010016

Mohammad Mahdi Khakbaz Heshmati, F. Emami

{"title":"Optimized Design and Simulation of Optical Section in Electro-Reflective Modulators Based on Photonic Crystals Integrated with Multi-Quantum-Well Structures","authors":"Mohammad Mahdi Khakbaz Heshmati, F. Emami","doi":"10.3390/opt4010016","DOIUrl":"https://doi.org/10.3390/opt4010016","url":null,"abstract":"In the design of photonic integrated circuits (PICs), the optical connections of the PIC surface, along with the electronic components of the chips, are significant issues. One of the optoelectronics components that utilizes these surface connections are electro-reflective modulators, consisting of an optical section and an electronic section. In this paper, a novel scheme of two-dimensional photonic crystals (PhCs) is presented for the optical and reflective sections of this device. This design is two-dimensional; thus, it has less volume than the current bulky structures. The finite element method is utilized to simulate and optimize the scheme of PhCs and gold layer parameters. Furthermore, optimization of design parameters is accomplished through the Nelder–Mead method. Moreover, the modeling and simulation of the proposed hybrid PhCs has been investigated according to the structural parameters with tolerance. These tolerances, related to the nanorods’ radius and lattice constants, are considered to justify and vindicate the fabrication technology limitations and conditions. In the “on” state of the modulator, the light transmission ratio is 98% for a 903 nm wavelength with a 45° angle of deflection and incident light, nd the bandwidth is 20 nm. For an 897 nm wavelength with a 41° angle, the transmission ratio is 95%, and the bandwidth is 7 nm.","PeriodicalId":54548,"journal":{"name":"Progress in Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90635778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compact Optical System Based on Scatterometry for Off-Line and Real-Time Monitoring of Surface Micropatterning Processes 基于散射测量的小型光学系统用于离线和实时监测表面微图纹过程

3区物理与天体物理

Progress in Optics Pub Date : 2023-02-24 DOI: 10.3390/opt4010014

M. Soldera, S. Teutoburg-Weiss, N. Schröder, B. Voisiat, A. Lasagni

{"title":"Compact Optical System Based on Scatterometry for Off-Line and Real-Time Monitoring of Surface Micropatterning Processes","authors":"M. Soldera, S. Teutoburg-Weiss, N. Schröder, B. Voisiat, A. Lasagni","doi":"10.3390/opt4010014","DOIUrl":"https://doi.org/10.3390/opt4010014","url":null,"abstract":"In this study, a scatterometry-based monitoring system designed for tracking the quality and reproducibility of laser-textured surfaces in industrial environments was validated in off-line and real-time modes. To this end, a stainless steel plate was structured by direct laser interference patterning (DLIP) following a set of conditions with artificial patterning errors. Namely, fluctuations of the DLIP process parameters such as laser fluence, spatial period, and focus position are introduced, and also, two patterning strategies are implemented, whereby pulses are deliberately not fired at both deterministic and random positions. The detection limits of the system were determined by recording the intensities of the zero, first, and second diffraction order using a charge-coupled device (CCD) camera. As supported by topographical measurements, the system can accurately calculate spatial periods with a resolution of at least 100 nm. In addition, focus shifts of 70 µm from the optimum focus position can be detected, and missing patterned lines with a minimum width of 28 µm can be identified. The validation of this compact characterization unit represents a step forward for its implementation as an in-line monitoring tool for industrial laser-based micropatterning.","PeriodicalId":54548,"journal":{"name":"Progress in Optics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81577693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laser Beam Jitter Control Based on a LabVIEW FPGA Control System 基于LabVIEW FPGA控制系统的激光束抖动控制

3区物理与天体物理

Progress in Optics Pub Date : 2023-02-24 DOI: 10.3390/opt4010015

Delin Zhang, Jingxin Cheng, Yuan-Xiang Xia

引用次数: 0