PhotoniX最新文献_第10页

Wear-resistant surface coloring by ultrathin optical coatings 超薄光学涂层耐磨表面着色

PhotoniX Pub Date : 2022-06-28 DOI: 10.1186/s43074-022-00061-5

Geng, Jiao, Shi, Liping, Ni, Junhuan, Jia, Qiannan, Yan, Wei, Qiu, Min

{"title":"Wear-resistant surface coloring by ultrathin optical coatings","authors":"Geng, Jiao, Shi, Liping, Ni, Junhuan, Jia, Qiannan, Yan, Wei, Qiu, Min","doi":"10.1186/s43074-022-00061-5","DOIUrl":"https://doi.org/10.1186/s43074-022-00061-5","url":null,"abstract":"We design, fabricate, optically and mechanically characterize wearable ultrathin coatings on various substrates, including sapphire, glass and silicon wafer. Extremely hard ceramic materials titanium nitride (TiN), aluminium nitride (AlN), and titanium aluminium nitride (TiAlN) are employed as reflective, isolated and absorptive coating layer, respectively. Two types of coatings have been demonstrated. First, we deposit TiAlN after TiN on various substrates (TiAlN-TiN, total thicknesses <100 nm), achieving vivid and viewing-angle independent surface colors. The colors can be tuned by varying the thickness of TiAlN layer. The wear resistance of the colorful ultrathin optical coatings is verified by scratch tests. The Mohs hardness of commonly used surface coloring made of Si-/Ge-metals on substrates is <2.5, as soft as fingernail. However, the Mohs hardness of our TiAlN-TiN on substrates is evaulated to be 7-9, harder than quartz. Second, Fano-resonant optical coating (FROC), which can transmit and reflect the same color as a beam split filter is also obtained by successively coating TiAlN-TiN-AlN-TiN (four-layer film with a total thickness of 130 nm) on transparent substrates. The FROC coating is as hard as glass. Such wearable and color-tunable thin-film structural colors and filters may be attractive for many practical applications such as sunglasses.","PeriodicalId":93483,"journal":{"name":"PhotoniX","volume":"159 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138505326","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}

引用次数: 5

Intelligent optoelectronic processor for orbital angular momentum spectrum measurement 用于轨道角动量谱测量的智能光电处理器

PhotoniX Pub Date : 2022-05-30 DOI: 10.1186/s43074-022-00079-9

Hao Wang, Ziyu Zhan, Futai Hu, Yuan Meng, Zeqiu Liu, X. Fu, Qian Liu

引用次数: 9

Adaptive optical microscopy via virtual-imaging-assisted wavefront sensing for high-resolution tissue imaging 自适应光学显微镜通过虚拟成像辅助波前传感高分辨率组织成像

PhotoniX Pub Date : 2022-05-27 DOI: 10.1186/s43074-022-00060-6

Zhou, Zhou, Huang, Jiangfeng, Li, Xiang, Gao, Xiujuan, Chen, Zhongyun, Jiao, Zhenfei, Zhang, Zhihong, Luo, Qingming, Fu, Ling

{"title":"Adaptive optical microscopy via virtual-imaging-assisted wavefront sensing for high-resolution tissue imaging","authors":"Zhou, Zhou, Huang, Jiangfeng, Li, Xiang, Gao, Xiujuan, Chen, Zhongyun, Jiao, Zhenfei, Zhang, Zhihong, Luo, Qingming, Fu, Ling","doi":"10.1186/s43074-022-00060-6","DOIUrl":"https://doi.org/10.1186/s43074-022-00060-6","url":null,"abstract":"Adaptive optics (AO) is a powerful tool for optical microscopy to counteract the effects of optical aberrations and improve the imaging performance in biological tissues. The diversity of sample characteristics entails the use of different AO schemes to measure the underlying aberrations. Here, we present an indirect wavefront sensing method leveraging a virtual imaging scheme and a structural-similarity-based shift measurement algorithm to enable aberration measurement using intrinsic structures even with temporally varying signals. We achieved high-resolution two-photon imaging in a variety of biological samples, including fixed biological tissues and living animals, after aberration correction. We present AO-incorporated subtractive imaging to show that our method can be readily integrated with resolution enhancement techniques to obtain higher resolution in biological tissues. The robustness of our method to signal variation is demonstrated by both simulations and aberration measurement on neurons exhibiting spontaneous activity in a living larval zebrafish.","PeriodicalId":93483,"journal":{"name":"PhotoniX","volume":"160 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138505312","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}

引用次数: 6

Tunable narrow-band single-channel add-drop integrated optical filter with ultrawide FSR 具有超宽FSR的可调谐窄带单通道加降集成光学滤波器

PhotoniX Pub Date : 2022-04-29 DOI: 10.1186/s43074-022-00056-2

Sun, Chunlei, Yin, Yuexin, Chen, Zequn, Ye, Yuting, Luo, Ye, Ma, Hui, Wang, Lichun, Wei, Maoliang, Jian, Jialing, Tang, Renjie, Dai, Hao, Wu, Jianghong, Li, Junying, Zhang, Daming, Lin, Hongtao, Li, Lan

{"title":"Tunable narrow-band single-channel add-drop integrated optical filter with ultrawide FSR","authors":"Sun, Chunlei, Yin, Yuexin, Chen, Zequn, Ye, Yuting, Luo, Ye, Ma, Hui, Wang, Lichun, Wei, Maoliang, Jian, Jialing, Tang, Renjie, Dai, Hao, Wu, Jianghong, Li, Junying, Zhang, Daming, Lin, Hongtao, Li, Lan","doi":"10.1186/s43074-022-00056-2","DOIUrl":"https://doi.org/10.1186/s43074-022-00056-2","url":null,"abstract":"Free-spectral-range (FSR)-free optical filters have always been a critical challenge for photonic integrated circuits. A high-performance FSR-free filter is highly desired for communication, spectroscopy, and sensing applications. Despite significant progress in integrated optical filters, the FSR-free filter with a tunable narrow-band, high out-of-band rejection, and large fabrication tolerance has rarely been demonstrated. In this paper, we propose an exact and robust design method for add-drop filters (ADFs) with an FSR-free operation capability, a sub-nanometer optical bandwidth, and a high out-of-band rejection (OBR) ratio. The achieved filter has a 3-dB bandwidth of < 0.5 nm and an OBR ratio of 21.5 dB within a large waveband of 220 nm, which to the best of our knowledge, is the largest-FSR ADF demonstrated on a silicon photonic platform. The filter exhibits large tunability of 12.3 nm with a heating efficiency of 97 pm/mW and maintains the FSR-free feature in the whole tuning process. In addition, we fabricated a series of ADFs with different periods, which all showed reliable and excellent performances.","PeriodicalId":93483,"journal":{"name":"PhotoniX","volume":"160 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138505310","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}

引用次数: 1

Flexible minimally invasive coherent anti-Stokes Raman spectroscopy (CARS) measurement method with tapered optical fiber probe for single-cell application 单细胞应用的锥形光纤探头柔性微创相干抗斯托克斯拉曼光谱测量方法

PhotoniX Pub Date : 2022-04-24 DOI: 10.1186/s43074-022-00058-0

Wang, Tong, Jiang, Junfeng, Liu, Kun, Wang, Shuang, Niu, Panpan, Liu, Yize, Liu, Tiegen

引用次数: 5

Metasurface with dynamic chiral meta-atoms for spin multiplexing hologram and low observable reflection 具有动态手性元原子的自旋复用全息图和低可观测反射的超表面

PhotoniX Pub Date : 2022-04-12 DOI: 10.1186/s43074-022-00057-1

Wang, He, Qin, Zhe, Huang, Lingling, Li, Yongfeng, Zhao, Ruizhe, Zhou, Hongqiang, He, Haoyang, Zhang, Jieqiu, Qu, Shaobo

{"title":"Metasurface with dynamic chiral meta-atoms for spin multiplexing hologram and low observable reflection","authors":"Wang, He, Qin, Zhe, Huang, Lingling, Li, Yongfeng, Zhao, Ruizhe, Zhou, Hongqiang, He, Haoyang, Zhang, Jieqiu, Qu, Shaobo","doi":"10.1186/s43074-022-00057-1","DOIUrl":"https://doi.org/10.1186/s43074-022-00057-1","url":null,"abstract":"Spin light manipulation based on chiral metasurfaces is a striking hotspot that has intrigued huge attention. Circular dichroism, a unique phenomenon of chiral atoms/molecules, has been regarded as another auxiliary dimension for guiding electromagnetic waves, which has been explored in the field of artificial material sciences yet a challenging issue. Here, a generic strategy based on dynamic chiral meta-atom for revealing strong circular dichroism as well as applicable electromagnetic functionality is proposed in microwave regime. We demonstrate a dynamic metasurface that enables the fully independent holograms reconstruction for one circular polarization or the other at the active operating state. On the other hand, the electromagnetic scattering is realized for lowering observable backward reflection at the passive state. Numerical simulation and experimental verification are conducted to manifest the feasibility. It is expected that the proposed strategy can be applied to broaden the horizon for dynamic chiral meta-devices and may find applications in information encryption, anti-counterfeiting, and other dynamic systems.","PeriodicalId":93483,"journal":{"name":"PhotoniX","volume":"161 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138505309","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}

引用次数: 19

Ultrafast (600 ps) α-ray scintillators 超快(600ps) α-射线闪烁体

PhotoniX Pub Date : 2022-03-30 DOI: 10.1186/s43074-022-00054-4

Richeng Lin, Yanming Zhu, Liang Chen, Wei Zheng, Mengxuan Xu, J. Ruan, Renfu Li, Titao Li, Zhuogeng Lin, Lu Cheng, Ying Ding, Feng Huang, X. Ouyang

引用次数: 0

High-speed Si-Ge avalanche photodiodes 高速硅锗雪崩光电二极管

PhotoniX Pub Date : 2022-03-25 DOI: 10.1186/s43074-022-00052-6

Binhao Wang, Jifang Mu

引用次数: 17

Detection of surface defects and subsurface defects of polished optics with multisensor image fusion 基于多传感器图像融合的抛光光学器件表面缺陷和亚表面缺陷检测

PhotoniX Pub Date : 2022-03-02 DOI: 10.1186/s43074-022-00051-7

Huanyu Sun, Shiling Wang, Xiao-Xiang Hu, Hongjie Liu, Xiaoyan Zhou, Jin Huang, Xinglei Cheng, Feng Sun, Yubo Liu, Dong Liu