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current developments in optical design and optical engineering ii

Proceedings incorporates 43 papers. These are arranged into six sessions dealing with the following major topics: assembly methods and materials for optical systems;advanced optical manufacturing and testing;optical d... 详细信息

ISBN: (纸本)0819409251

关键词： optical systems

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current developments in lens design and optical engineering ii

Current developments in lens design and optical engineering ...

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current developments in Lens design and optical engineering ii

The proceedings contained 20 papers from the journal on current developments in Lens design and optical engineering. The topics discussed included: optics for binocular telescopes;enhancements to the optimization proc... 详细信息

关键词： optical engineering

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Erratum: (current developments in Lens design and optical engineering ii (30 July 2001))

Proceedings of SPIE - The International Society for Optical ...

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Proceedings of SPIE - The International Society for optical engineering 2001年 4441卷 179-179页

作者： Fischer, Robert E. Johnson, R. Barry Smith, Warren J.

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current developments in optical design and optical engineering iiI

Current Developments in Optical Design and Optical Engineeri...

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current developments in optical design and optical engineering iiI

The proceedings contains 44 papers. Some of the specific topics discussed are: multiple-temperature lens design optimization;engineering an agile beam director for laser radar;beam design of a noncooperative interfero... 详细信息

ISBN: (纸本)081941249X

关键词： optical systems

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Wireless Devices for optical Brain Stimulation: A Review of current developments for Optogenetic Applications in Freely Moving Mice

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CELLULAR AND MOLECULAR BIOengineering 2025年第1期18卷 1-13页

作者： Silva, Patricia Jacinto, Luis Fac Med Univ Porto FMUP Dept Biomed Expt Biol Unit P-4200319 Porto Portugal

PurposeOptogenetics is an invaluable tool to study brain circuits, but typical systems rely on tethered approaches to deliver light to the brain that hinder natural behavior. With the increasing prevalence of complex behavioral phenotyping in neuroscience experiments, wireless devices for optical stimulation offer great promise to overcome these *** this work we critically review recent systems engineering and device design approaches to deliver light to the brain with wireless operation for optogenetic *** describe strategies used for wireless control and communication, wireless power transfer, and light delivery to the brain with a focus on device integration for in vivo operation in freely behaving *** advances in optoelectronic systems, material science, and microtechnology have enabled the design and realization of miniaturized wirelessly-controlled optical stimulators for true untethered experiments in rodent models.

关键词： Optogenetics Wireless devices Optoelectronics Rodent behavior Neural modulation

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Flexible mechano-optical sensors from mechanoluminescence to mechanoplasmonics: designs, applications, and prospects

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JOURNAL OF MATERIALS CHEMISTRY C 2025年第5期13卷 2058-2090页

作者： Tao, Wei Xue, Yufeng Hu, Qinhua Yin, Ling Liu, Ye Maurer, Thomas Fleischer, Monika Dongguan Univ Technol DGUT CNAM Inst Dongguan 523106 Peoples R China Univ Technol Troyes Lab Light Nanomat & Nanotechnol L2n CNRS UMR 7076 F-10004 Troyes France Eberhard Karls Univ Tubingen Inst Appl Phys D-72076 Tubingen Germany Eberhard Karls Univ Tubingen Ctr LISA D-72076 Tubingen Germany Dongguan Univ Technol Sch Elect Engn & Intelligentizat Dongguan 523106 Peoples R China Univ Lille Sci Cite Cent Lille F-59000 Lille France

Flexible mechano-optical sensors (FMOS) achieve quantitative sensing of mechanical stimuli by monitoring changes in optical response, and due to the incorporation of a polymeric matrix/substrate, they exhibit high flexibility, elasticity, and biocompatibility. This wireless and visualized sensing capability offers potential for both in situ and in vivo applications. In this review, we delve into the mechanisms and developments of two types of FMOS: "active" mechanoluminescence (ML) and "passive" mechanoplasmonics (MP). The focus is on how ML particles and polymers can be combined in various configurations (such as bulk, laminar, and woven blending systems) to yield robust, multifunctional, and hybrid optical/electrical properties, exploring their potentials in engineering, information, and wearable/implantable applications. Additionally, the tunability of ML intensity and emission color under mechanical and various environmental stimuli is summarized, leading to a discussion on the versatile MP nanostructures. With their sophisticated artificial design, MP demonstrates promise for both small-scale sensing and high-level control over spectral wavelength and intensity. Lastly, based on current research on ML and MP, challenges and prospects for combining these two technologies to advance the field of FMOS are proposed.

关键词： optical sensors

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Acceptor engineering of MRI-sensitive conjugated polymers for tumor microenvironment-responsive bio-imaging and combined therapy

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CHEMICAL engineering JOURNAL 2025年 504卷

作者： Li, Xiliang Lu, Ziwei Gao, Yijian Yang, Yuliang Huang, Zhongming Liu, Ying Ma, Yujie Wang, Yu Du, Enming Li, Shengliang Soochow Univ Affiliated Hosp 1 Coll Pharmaceut Sci Suzhou Med Coll Suzhou 215123 Peoples R China Soochow Univ Affiliated Hosp 1 Dept Radiol Suzhou 215006 Peoples R China Zhengzhou Univ Henan Eye Hosp Henan Prov Peoples Hosp Peoples Hosp Zhengzhou 450003 Peoples R China Henan Acad Innovat Med Sci Henan Eye Inst Zhengzhou 450003 Peoples R China

Enormous developments have been achieved in the design of organic theranostics agents simultaneously with diagnostic and therapeutic performances, especially in the second near-infrared (NIR-ii, 1000-1700 nm) window. One major challenge for the further progress of organic theranostics agents is the rarity of efficient materials simultaneously integrated with optical and magnetic performances, especially with tumor-responsive performance. Herein, a magnetic resonance imaging (MRI)-sensitive, NIR-ii-excitable conjugated polymer material is developed as a multifunctional nanoplatform for efficient tumor microenvironment (TME)-activated multimodal cancer theranostics. With D-A molecular engineering and ferrocene anchoring, the absorption capability of ferrocene-typed conjugated polymers (FCPs) can be rationally regulated to achieve NIR-ii absorption. The water-dispersive FCP-3 NPs demonstrate superior NIR-ii-excitable photothermal performance (PCE = 54 %) and T2-weighted MRI responses toward tumor endogenous H2O2. Upon NIR-ii irradiation, FCP-3 NPs can efficiently generate reactive oxygen species (ROS) through NIR-ii photothermal-augmented Fenton reaction in the TME. Both in vitro and in vivo experiments confirm that the FCP-3 NPs have high-performance combination therapy of NIR-ii photothermal therapy and augmented chemodynamic therapy with TME-sensitive magnetic resonance and photoacoustic dual-modal imaging, which realizes 100 % tumor elimination with high safety. This work offers a major step toward designing tumor microenvironment-activated polymeric materials for smart multimodal cancer theranostics.

关键词： Tumor microenvironment MRI NIR-ii Photothermal Conjugated polymer

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Power and Efficiency Scaling of GaAs-Based Edge-Emitting High-Power Diode Lasers

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IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS 2025年第2期31卷

作者： Crump, Paul Boni, Anisuzzaman Elattar, Mohamed Khamari, S. K. Marko, Igor P. Sweeney, Stephen J. Arslan, Seval King, Ben Miah, Md. Jarez Martin, Dominik Knigge, Andrea Casa, Pietro Della Traenkle, Guenther Ferdinand Braun Inst FBH D-12489 Berlin Germany Univ Glasgow Glasgow City G12 8QQ Scotland FBH Berlin D-12489 Berlin Germany RRCAT Indore 452013 India Univ Glasgow Glasgow City G12 8LT Scotland

current progress in the scaling of continuous wave optical output power and conversion efficiency of broad-area GaAs-based edge emitters, broad-area lasers (BALs), operating in the 900 & mldr;1000 nm wavelength range is presented. Device research and engineering efforts have ensured that BALs remain the most efficient of all light sources, so that in the past 10 years, power conversion efficiency at 20 W continuous wave (CW) output power from BA lasers with a 90 & mldr;100 mu m wide stripe has increased 1.5-fold to 57% (via epitaxial layer design developments), whilst peak CW power per single emitter has increased around 3-fold to 70 W (via scaling of device size), with further scaling underway, for example via use of multi-junction designs. However, the peak achievable CW power conversion efficiency and CW specific output power (defined here as peak output power from a 100 mu m stripe diode lasers with a single p-n junction) has changed remarkably little, remaining around 70% and 25 W, respectively, for the past decade. Fortunately, research to understand the limits to peak efficiency and specific output power has also shown progress. Specifically, recent studies indicate that spatial non-uniformity in optical field and temperature play a major role in limiting both power and conversion efficiency. Technological efforts motivated by these discoveries to flatten lateral and longitudinal temperature profiles have successfully increased both power and efficiency. In addition, epitaxial layer designs with very high modal gain successfully reduce threshold current and increase slope at 25 degrees C to values comparable to those observed at 200 K, offering a path toward the 80% conversion efficiency range currently seen only at these cryogenic temperatures. Overall, whilst operating efficiency and power continue to scale rapidly, a technological path for increased specific power and peak efficiency is also emerging.

关键词： optical resonators Semiconductor lasers Power generation Diode lasers Power lasers optical reflection Epitaxial layers Stimulated emission Reflectivity Power conversion Quantum well lasers power conversion

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Exploring the optoelectronic properties of medium-wave dual-color detectors based on asymmetric InAs/InAsSb superlattice niBin structure

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INFRARED PHYSICS & TECHNOLOGY 2025年 145卷

作者： Huang, Wenya Yang, Shuai Yu, Yilun Liu, Beituo Ge, Rui Xia, Changsheng Yue, Fangyu East China Normal Univ Dept Elect Key Lab Polar Mat & Devices MOE Shanghai 200241 Peoples R China GMPT Co Ltd 8th FloorBldg 426 Qiuyue RdPudong New Area Shanghai 201120 Peoples R China Chinese Acad Sci Shanghai Inst Tech Phys State Key Lab Infrared Phys Shanghai 200083 Peoples R China

The short-mid-/mid-wave infrared (SMWIR/MWIR) detectors can capture target information in two bands simultaneously, enhancing the recognition accuracy in challenging interference scenarios by suppressing complex background. Here, we explore the optoelectrical properties of InAs/InAsSb-superlattice-based dual-band niBin detectors consisting of SMWIR/MWIR absorbers separated by an AlGaAsSb unipolar barrier. The experimental and simulated results show that: i) The bandgaps of both SMWIR and MWIR absorbers can be consistently determined via transmission and photocurrent spectra, giving cutoff wavelengths of 4.16 mu m and 5.21 mu m (77 K), respectively, well in line with the design values;ii) The device structure shows n-type conductivity by Hall measurements, based on which the conduction and scattering mechanisms at various temperatures can be clarified;iii) Dark current density analysis reveals the temperature dependent dominant current mechanisms, i. e., the generation-recombination current in 150 K - 210 K and the diffusion current above 210 K;and iv) The Burstein-Moss effect can make the determined optical bandgap slightly redshifted ( 34 meV), as compared to that of electrical techniques. This work provides new insights into bandgap engineering and structural design for MWIR dual-color detectors based on InAs/InAsSb superlattices.

关键词： InAs/InAsSb type-ii superlattice Short-mid-/mid-wave Infrared detectors

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Scalable dataset acquisition for data-driven lensless imaging 2

Scalable dataset acquisition for data-driven lensless imagin...

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Computational optical Imaging and Artificial Intelligence in Biomedical Sciences ii 2025

作者： Hung, Clara S. Kabuli, Leyla A. Ponomarenko, Vasilisa Waller, Laura Department of Electrical Engineering and Computer Sciences University of California Berkeley United States

ISBN: (纸本)9781510684140

Data-driven developments in lensless imaging, such as machine learning-based reconstruction algorithms, require large datasets. In this work, we introduce a data acquisition pipeline that can capture from multiple lensless imaging systems in parallel, under the same imaging conditions, and paired with computational ground truth registration. We provide an open-access 25,000 image dataset with two lensless imagers, a reproducible hardware setup, and open-source camera synchronization code. Experimental datasets from our system can enable data-driven developments in lensless imaging, such as machine learning-based reconstruction algorithms and end-to-end system design. © 2025 SPIE.

关键词： Imaging systems

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