Yubin Fan 1,2,3†Hong Liang 4,5Yuhan Wang 6Shufan Chen 1,2,3[ ... ]Din Ping Tsai 1,2,3,*
Author Affiliations
Abstract
1 City University of Hong Kong, Department of Electrical Engineering, Hong Kong, China
2 City University of Hong Kong, Centre for Biosystems, Neuroscience, and Nanotechnology, Hong Kong, China
3 City University of Hong Kong, The State Key Laboratory of Terahertz and Millimeter Waves, Hong Kong, China
4 The Hong Kong University of Science and Technology, Department of Physics, Hong Kong, China
5 The Hong Kong University of Science and Technology, IAS Center for Quantum Technologies, Hong Kong, China
6 Harbin Institute of Technology (Shenzhen), Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Shenzhen, China
7 Pengcheng Laboratory, Shenzhen, China
Quantum technologies rely on creating and manipulating entangled sources, which are essential for quantum information, communication, and imaging. By integrating quantum technologies and all-dielectric metasurfaces, the performance of miniature display devices can be enhanced to a higher level. Miniature display technology, such as virtual reality display, has achieved original commercial success, and was initially applied to immersive games and interactive scenes. While the consumer market has quickly adopted this technology, several areas remain for improvement, including concerns around bulkiness, dual-channel display, and noise reduction. Here, we experimentally realize a quantum meta-hologram concept demonstration of a miniature display. We fabricate an ultracompact meta-hologram based on 1 μm thick titanium dioxide (TiO2). The meta-hologram can be remotely switched with heralding technique and is robust against noise with the quantum entangled source. The platform can alter the miniature display channel by manipulating heralding photons’ polarization, removing speckles and multiple reflective light noise, improving imaging contrast, and potentially decreasing device weight. Imaging contrast increases from 0.36 dB under speckle noise influences to 6.8 dB in quantum correlation imaging. This approach has the potential to miniaturize quantum displays and quantum communication devices.
quantum meta-hologram display metasurface dual channel 
Advanced Photonics Nexus
2024, 3(1): 016011
作者单位
摘要
华中科技大学,武汉光电国家研究中心,武汉 430074
作为典型吸光层的三维金属卤化物钙钛矿材料具有较低的结合能、较长的载流子寿命及扩散长度、较高的缺陷容忍度等优异的光电性能,所制备的钙钛矿太阳能电池展现出了优异的光电转化效率。然而,对光、热、湿度等环境的敏感性限制了其实际应用。相比于三维钙钛矿,激子结合能较高、化学性质稳定的二维钙钛矿增强了器件的长期稳定性。与二维钙钛矿结合,三维/二维多维度钙钛矿电池在不损失效率的前提下获得了优越的稳定性。本文主要从二维钙钛矿的晶体结构及稳定性入手,重点阐述了三维/二维多维度钙钛矿的制备工艺及稳定性方面的研究进展,最后对三维/二维多维度钙钛矿太阳能电池效率及稳定性的进一步提升进行了总结与展望,旨在为钙钛矿光伏商业化提供指导。
二维 三维/二维多维度钙钛矿 太阳能电池 two-dimensional 3D/2D multi-dimensional perovskite solar cells 
硅酸盐学报
2023, 51(9): 2254
作者单位
摘要
1 中国科学院上海光学精密机械研究所空间激光传输与探测技术重点实验室, 上海 201800
2 中国科学院大学材料与光电研究中心, 北京 100049

利用单角度面半导体增益芯片及光纤布拉格光栅,研制了1310 nm波段的窄线宽混合集成外腔半导体激光器(ECDL)。该ECDL集成在一个紧凑的蝶形封装结构中,当工作温度和电流设置为25 ℃和280 mA时,EDCL的发射波长为1309.8 nm,3 dB洛伦兹线宽为18 kHz,3 h功率漂移量为0.6 mW,频率漂移量为315 MHz。另外,在工作温度为25 ℃时,激光无跳模电流调谐范围为7 GHz,调谐系数为47 MHz·mA -1。该ECDL可广泛应用于光纤传感和光纤通信等领域。

激光器 半导体激光器 光纤布拉格光栅 集成光学器件 光纤传感 
中国激光
2021, 48(20): 2001002
梁虹 1,2应康 1,*王迪 3魏金金 3[ ... ]蔡海文 1,2,**
作者单位
摘要
1 中国科学院上海光学精密机械研究所空间激光信息传输与探测技术重点实验室, 上海 201800
2 中国科学院大学材料与光电研究中心, 北京 100049
3 中国空间技术研究院西安分院空间微波技术国家级重点实验室, 陕西 西安 710100
提出了一种利用局域温度控制的高精度相移控制技术制备多相移光纤光栅滤波器的方法。首先,分析了多相移光纤光栅中相移量和相移位置的误差对多相移光纤光栅滤波器的插入损耗、带宽和形状因子的影响,得到了高性能多相移光纤光栅制备所需的相移量精度(0.0029π)和相移位置精度(368 μm)。然后,实验证实了利用局域温度控制引入高精度相移(相移量精度为0.0007π,相移位置精度为30 μm)的可行性。最后,利用所提方法制备了多相移光纤光栅,并对其光谱进行了测试和理论仿真。结果表明,基于所提方法制备的多相移光纤光栅滤波器的频率响应接近理论仿真下的理想滤波器特性,插入损耗约为0.5 dB,3 dB带宽约为366 MHz,20 dB带宽约为972 MHz,形状因子约为0.38。所提制备多相移光纤光栅滤波器的方法精确、简单、经济,没有对光纤光栅的结构造成永久性的改变,具有相移量可擦除的优势,可进一步应用于制备新型可调谐光纤滤波器。
光纤光学 光纤器件 多相移光纤布拉格光栅 局域温度控制 光学滤波器 
中国激光
2021, 48(16): 1606001
Author Affiliations
Abstract
Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Optoelectronic Engineering Shenzhen University, Shenzhen 518060, P. R. China
Photodynamic therapy (PDT) has become an attractive tumor treatment modality because of its noninvasive feature and low side effects. However, extreme hypoxia inside solid tumors severely impedes PDT therapeutic outcome. To overcome this obstacle, various strategies have been developed recently. Among them, in situ oxygen generation, which relies on the decomposition of tumor endogenous H2O2, and oxygen delivery tactic using high oxygen loading capacity of hemoglobin or perfluorocarbons, have been widely studied. The in situ oxygen generation strategy has high specificity to tumors, but its oxygen-generating efficiency is limited by the intrinsically low tumor H2O2 level. In contrast, the oxygen delivery approach holds advantage of high oxygen loading efficiency, nevertheless lacks tumor specificity. In this work, we prepared a nanoemulsion system containing H2O2-responsive catalase, highly efficient oxygen carrier perfluoropolyether (PFPE), and a near-infrared (NIR) light activatable photosensitizer IR780, to combine the high tumor specificity of the in situ oxygen generation strategy and the high efficiency of the oxygen delivery strategy. This concisely prepared nanoplatform exhibited enhanced and H2O2-controllable production of singlet oxygen under light excitation, satisfactory cytocompatibility, and ability to kill cancer cells under NIR light excitation. This highlights the potential of this novel nanoplatform for highly efficient and selective NIR light mediated PDT against hypoxic tumors. This research provides new insight into the design of intelligent nanoplatform for relieving tumor hypoxia and enhancing the oxygen-dependent PDT effects in hypoxic tumors.
Hypoxia catalase oxygen delivery perfluorocarbon near-infrared 
Journal of Innovative Optical Health Sciences
2021, 14(2): 2150003
作者单位
摘要
1 哈尔滨学院工学院,哈尔滨 150086
2 哈尔滨工业大学仪器科学与工程学院,哈尔滨 150001
本文采用热分解法制备了NaYbF4纳米晶。通过TEM图像对NaYbF4纳米晶的尺寸进行表征。根据Beer-Lambert理论建立了NaYbF4纳米晶浓度与其光吸收度 间的关系。提出了NaYbF4纳米晶浓度调节方法,利用NaYbF4纳米晶中Yb3+的吸收光谱确定溶液中NaYbF4纳米晶的浓度,并给出了纳米晶浓度调节公式。为了检 验这种浓度调节方法,对五批次NaYbF4纳米晶样品的浓度进行调节,发现浓度调节方法非常可靠。并对调整后的浓度进行多次测量,检验此调节方法的误差, 最大误差在9%。
NaYbF4纳米晶 光敏剂 浓度 光动力疗法 NaYbF4 nanocrystal photosensitizer concentration photodynamic therapy 
人工晶体学报
2020, 49(2): 259
作者单位
摘要
深圳大学光电工程学院光电子器件与系统教育部/广东省重点实验室, 广东 深圳 518060
无标记显微成像技术包括光学相干层析、光声成像、非线性成像和微球透镜成像等技术。概述了目前常用的无标记显微成像技术,并对各种传统和先进的成像原理进行了总结。详细介绍了各种无标记成像技术的优缺点和最新研究进展,以及此类成像技术在各领域的应用,并对基于无标记显微技术的多模态成像技术的未来发展进行了展望。
成像系统 无标记显微成像 非线性成像技术 显微成像 生物光学 
激光与光电子学进展
2019, 56(7): 070005
何苗 1,*王保云 1,2盛伟 1杨昆 1,2洪亮 2
作者单位
摘要
1 云南师范大学 信息学院,  昆明  650500
2 西部资源环境地理信息技术教育部工程研究中心,   昆明  650500
针对彩色遥感图像中薄云带来的降质问题, 提出了一种基于低秩矩阵分解的去云方法。将彩色遥感图像分成三个单通道图像, 对每一个通道进行低秩矩阵分解, 得到单通道薄云信息; 根据薄云在三个通道中均匀分布的特点, 选取合适的阈值对薄云信息进行自动判定, 提取代表三个通道的薄云图像; 用三个通道的图像分别减去对应通道的薄云图像, 并融合三个通道的结果得到去云后的彩色遥感图像。实验结果表明, 该方法不仅能够保留无云区域信息的完整性, 而且对有云区域的处理在主观视觉效果和客观评价指标上都具有较好的效果。
彩色遥感图像 薄云去除 低秩矩阵分解 color remote sensing image thin cloud removal low-rank matrix decomposition 
光学技术
2017, 43(6): 503
Author Affiliations
Abstract
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Filamentation-induced water condensation and snow formation are investigated using laser pulses with different chirps and pulse widths. Chirped pulses result in the laser filamentation with different spatial lengths and intensities, which has a great impact on airflow motion and snow formation. The experiments show that snow formation mainly relates to the filament intensity distribution. Negative chirped pulses produce a greater amount of snow because of higher intensity inside the filaments as compared with the positive chirped pulses.
320.0320 Ultrafast optics 190.0190 Nonlinear optics 140.0140 Lasers and laser optics 
Chinese Optics Letters
2015, 13(3): 033201
梁红 *
作者单位
摘要
海军装备研究院航空装备论证研究所, 上海 200436
高清图像跟踪系统是一种可以实时显示运动目标、并对目标进行跟踪的高新技术设备。HDMI是Silicon Image等八家公司推出的针对高清电视机终端的开放式高清晰度多媒体接口,它采用一种独特的TMDS编码机制,具备在单一线缆上同时传输音视频数据的能力。基于高清电视的图像跟踪系统,充分利用其高分辨率特性,既可以实现运动目标地精确跟踪,又可以实时高速地显示图像。HDMI体系结构紧凑,使得图像跟踪系统更小巧轻便。
图像跟踪系统 高清电视 高清晰度多媒体接口 image tracking system HDTV HDMI 
光学与光电技术
2010, 8(6): 21

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