Contents
2022
Volume: 51 Issue 2
36 Article(s)

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Infrared Small Vehicle Detection Based on Parallel Fusion Network
Zijian ZHU, Qi LIU, Hongfen CHEN, Guiyang ZHANG, Fukuan WANG, and Ju HUO
The high-precision infrared small vehicle detection under disturbed background has a high application value. The existing small IR vehicle detection methods usually fail or cause a high probability of false alarm in the complex backgrounds, fuzzy targets and overlapping targets. A detection method base on parallel fusi
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0210001 (2022)
Real-time Infrared Target Detection Algorithm for Embedded System in Complex Scene
Penghui ZHANG, Zhi LIU, Jianyong ZHENG, Boxia HE, and Yuhao PEI
In order to solve the problems of low accuracy and recall rate of infrared target detection under complex background conditions, as well as slow inference speed of network model on embedded computing platform, lightweight network YOLOv4-Tiny was taken as the basic architecture of the algorithm, combined with visual att
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0210002 (2022)
Hyperspectral Image Super Resolution via Nonconvex Low-rank Constraint of Tensor Ring Factors
Jianwei ZHENG, Xinjie ZHOU, Honghui XU, Mengjie QING, and Cong BAI
Hyperspectral Image (HSI) is composed of multiple discrete bands with specific frequencies. It not only contains rich spectral information but also provides real scenes that cannot be captured by human eyes, which is conducive to accurately target recognition. It has been widely used in earth remote sensing tasks such
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0210003 (2022)
End-to-end Image Dehazing Based on Ladder Network and Cross Fusion
Yan YANG, Jinlong ZHANG, and Xiaozhen LIANG
Haze scenes seriously affect the working performance and accuracy of computer vision systems. As an important research direction in the field of computer vision, image dehazing has always attracted the attention of researchers. Convolutional neural networks play a good role in image processing problems by virtue of the
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0210004 (2022)
Image Enhancement Algorithm of Electrowetting Display Based on Image Segmentation and Dynamic Histogram Equalization
Junxia WAN, Shanling LIN, Ting MEI, Zhixian LIN, and Tailiang GUO
Electrowetting display is a new reflective display which depends on ambient light display. It has the advantages of low power consumption, no radiation, fast response speed and easy colorization. It has a broad application prospect in electronic paper industry. However, in practical application, there are some problems
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0210005 (2022)
A Low-quality Iris Image Segmentation Algorithm Based on SRN-UNet
Huijuan TIAN, Jiahao ZHAI, Jianxin LIU, Jiawei LIU, and Linlin DENG
In recent years, iris recognition has been widely used in various fields. Iris segmentation is the most critical step in the iris recognition process. The accuracy of the iris segmentation algorithm directly affects the performance of the entire iris recognition system.In this study, an iris image segmentation algorith
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0210006 (2022)
Optical Remote Sensing Image Scene Classification Based on Multi-level Cross-layer Bilinear Fusion
Tianwei YU, Enrang ZHENG, Junge SHEN, and Kai WANG
Remote sensing, a kind of detection technology, provides non-contact surface observation through sensor platform. With the rapid development of unmanned aerial vehicle, remote sensing and satellites technology, quantitative remote sensing images with higher resolution can be generated. Compared with medium and low-reso
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0210007 (2022)
Lightweight Synthetic Aperture Radar Ship Detection Algorithm with Enhanced Receptive Field
Yanni WANG, Xuesong SUN, and Lixian YU
The marine environment is polluted and the marine ecological environment continues to be destroyed because of the over-exploitation and utilization of marine resources. Countries around the world have taken measures to solve the problem. In order to protect the coastal ecological environment, China has also begun to im
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0210008 (2022)
An Ultra-lightweight Real-time Segmentation Network of Finger Vein Textures
Junying ZENG, Yucong CHEN, Xihua LIN, Chuanbo QIN, Yinbo WANG, Jingming ZHU, Lianfang TIAN, Yikui ZHAI, and Junying GAN
Among biometric recognition technologies, finger vein recognition has attracted the attention of many researchers because of various advantages, such as noncontact collection, living body recognition, forgery difficulty, and low cost. The finger vein extraction is the key step of finger vein recognition technology, whi
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0210009 (2022)
Preparation of ZnO/BiOBr Composites and Photocatalytic Degradation of RhB under Visible Light
Jianhui LI, Chunmei YANG, Caifeng ZHANG, Shen ZHANG, Xiaohong MA, Xiaojing WU, Tainye WANG, Xiuli YUE, and Minran CHANG
In the process of industrial production activities such as textile, printing and dyeing, coating and medicine, about 10%~15% of organic pollutants will be discharged into the surrounding water, soil and atmosphere with industrial wastewater, which increases the difficulty of organic dye treatment. Photocatalysis is con
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0216001 (2022)
Effect of Temperature on the Surface Enhanced Raman Scattering Effect of Silver Substrate
Qingling MENG, Xianwei HU, Jiangyu YU, Zhongning SHI, and Zhaowen WANG
Surface Enhanced Raman Scattering (SERS) refers to the phenomenon that the Raman scattering signal of molecules adsorbed on some rough metal surfaces can be significantly enhanced. The combined effect of electromagnetic enhancement and chemical enhancement is widely recognized as the SERS mechanism by researchers. SERS
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0229001 (2022)
Measurement of Trace CO2 Concentration with Open-path TDLAS-WMS Technology
Chenglong ZHAO, Danfei HUANG, Zhiying LIU, Yuqi WANG, Aiqi ZHONG, Qinming ZHANG, and Fanhong MENG
The DFB laser with narrow linewidth and high side-mode suppression is used to develop a set of open TDLAS-WMS CO2 gas detection device. At present, most of the CO2 absorption spectra at 1 570 nm are still used. According to the query in HITRAN database, CO2 absorption intensity at 2 004 nm is stronger than that at 1 57
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0230001 (2022)
Non-invasive Multi-spectral Reconstruction in Scattering Medium
Bingxin TIAN, Jun HAN, Bingcai LIU, and Changmei GONG
Spectral imaging in biological tissue is an important detecting method in the biomedical field. Affected by the scattering effect of biological tissue itself, the scattered light passing through such tissues forms a group of chaotic speckles in the detector, which can not be imaged directly. Many methods have been prop
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0230002 (2022)
Multi-output Least-squares SVR Spectral Reflectance Reconstruction Method Based on Adaptive Optimization in Multi-scene
Yu FAN, Huiqin WANG, Ke WANG, Zhan WANG, and Gang ZHEN
Spectral reflectance is considered as the “fingerprint information” of substances, which can reflect the essential properties of the color of substances. The true color of the substance under different light conditions can be accurately restored by obtaining the spectral reflectance information. It has important applic
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0230003 (2022)
[in Chinese]
Yongzhen Huang, and Yongqiang Ning
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251200 (2022)
Instrumentation, Measurement and Metrology
Effect of Improved 'yo-yo' Cs/O Alternate Activation Method on Stability of GaAs Photocathode
Gangcheng JIAO, Kaimin ZHANG, Yijun ZHANG, Xin GUO, Feng SHI, Hongchang CHENG, Lei YAN, and Jingjing ZHAN
In modern low-light-level night vision devices, the negative-electron-affinity GaAs photocathode, as the photosensitive core component, is usually prepared by alternating Cs/O activation on the cleaned GaAs surface. Meanwhile, the stability of GaAs photocathode is directly affected by the quality of Cs/O activation pro
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0212001 (2022)
Research on Feature Extraction of Laser Interference Fringe and Centering Measurement Technology
Minge GAO, He YUAN, Min XU, Junhua WANG, and Hailong CUI
Opaque aspherical shells are widely used in the fields of aerospace, military and communications. The thickness measurement is a key issue to ensure the manufacturing quality of such components. Since it is impossible to conduct micron-level non-destructive measurement of the thickness directly, the flipping measuring
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0212002 (2022)
A Three-dimensional Point Cloud Denoising Method Based on Adaptive Threshold
Bin REN, Jianyuan CUI, Gang LI, and Haili SONG
Auto-driving is developing rapidly nowadays. Tesla, Nio and other car manufacturers have put their level 2 autonomous driving products on the market. As a kind of important sensors in the car, lidar can directly get the distance and angle to the object. That information is organized into the form called “point cloud”.
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0212003 (2022)
Special Issue for Ultrafast Optics
Development and Future of Vertical Cavity Surface Emitting Lasers Operated at High Temperatures(Invited)
Jianwei ZHANG, Yongqiang NING, Xing ZHANG, Yinli ZHOU, Chao CHEN, Hao WU, Li QIN, and Lijun WANG
The Vertical Cavity Surface Emitting Semiconductor Laser (VCSEL) has the unique advantages of circular symmetricalspot morphology, two-dimensional integration, narrow spectral width and small size et al. In particular, the wavelength of VCSEL laser is hardly changed with temperatures (0.06 nm/℃), also the output window
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251201 (2022)
Dual-mode Square Microcavity Lasers with a Tunable Wavelength Interval(Invited)
Ting WANG, Jiliang WU, Chunguang MA, Yongtao HUANG, Yuede YANG, Jinlong XIAO, and Yongzhen HUANG
In recent years, dual-wavelength lasers are used in a wide variety of applications in interferometric measurement, optical communications, microwave and THz wave generations, and optical frequency combs. A variety of methods to realize dual-wavelength lasers have been proposed, including fiber lasers, Y-branch integrat
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251202 (2022)
Development and Challenges of Nitride Vertical-cavity Surface-emitting Lasers(Invited)
Yukun WANG, Zhongming ZHENG, Hao LONG, Yang MEI, and Baoping ZHANG
There are many kinds of semiconductor lasers, such as Distributed Feedback Laser Diode (DFB-LD), Edge Emitting Laser (EEL) and Vertical Cavity Surface Emitting Laser (VCSEL). Among them, VCSEL has many advantages such as large-scale two-dimensional integration, circular far-field spot, single longitudinal mode output,
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251203 (2022)
Fabrication and Lasing Properties of Silicon-based GaN Microcavities(Invited)
Lilong MA, Minchao XIE, Wei OU, Yang MEI, and Baoping ZHANG
Semiconductor microcavities can restrict photons in a small volume compared to the wavelength of light, and can artificially adjust the spontaneous emission characteristics of the active medium in the cavity, which is important for the development of more efficient optoelectronic devices. At the same time, semiconducto
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251204 (2022)
Numerical Simulation of Noise Characteristics for WGM Microcavity Lasers(Invited)
Jiachen LIU, Yongzhen HUANG, Youzeng HAO, Ke YANG, Yuede YANG, and Jinlong XIAO
In this paper, by establishing a tri-mode rate equation model with a gain spectrum model and Langevin noise sources, the relative intensity noise, frequency noise and linewidths of a WGM microcavity laser are investigated numerically, and the influence of the mode competition on noise characteristics of the microcavity
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251205 (2022)
Extraction of Semiconductor Laser Rate Equations Parameters(Invited)
Jiankun WANG, Yongguang HUANG, and Yihui LIU
Semiconductor laser is one of the core light sources of optical fiber communication systems. Better semiconductor laser performance helps to increase the capacity and quality of the entire fiber optic communication system. In order to design better semiconductor lasers, it is often necessary to simulate various perform
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251206 (2022)
Control System of Multi-channel Interference Widely Tunable Laser(Invited)
Zifeng CHEN, Kuankuan WANG, Chun JIANG, Quanan CHEN, Qiaoyin LU, and Weihua GUO
Monolithic integrated widely tunable semiconductor laser is one of the key devices of photonic integrated circuit and next-generation reconfigurable optical network. In 2016, Wuhan National Laboratory for Optoelectronics of Huazhong University of science and technology proposed and experimentally verified a new type of
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251207 (2022)
Optimization of Electron Injectors for Interband Cascade Lasers(Invited)
Chao NING, Ruixuan SUN, Tian YU, Shuman LIU, Jinchuan ZHANG, Ning ZHUO, Lijun WANG, Junqi LIU, Shenqiang ZHAI, Yuan LI, and Fengqi LIU
The Interband Cascade Laser (ICL) is a mid-infrared laser source with a low threshold current density, which has been used widely in hydrocarbon detection and other gases. One active region stage of an ICL consists of an InAs/GaInSb/InAs W Quantum Well (QW) emitter, GaSb/AlSb QW hole injector and InAs/AlSb chirped supe
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251208 (2022)
High-power GaN-based Blue Laser Diodes with 7.5 W of Light Output Power Under Continuous-wave Operation(Invited)
Lei HU, Deyao LI, Jianping LIU, Aiqin TIAN, Dan WANG, Tao ZHANG, Si WU, Peng XU, and Hui YANG
Gallium Nitride(GaN)-based materials have the characteristics of large band gap, high electron mobility, high thermal conductivity, etc., which are used in various electronic devices and optoelectronic devices, and have received extensive attention. High power GaN-based blue laser diodes (LDs) have great prospects in l
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251209 (2022)
Research on Si-induced Quantum Well Intermixing Based on Cyclic Annealing(Invited)
Yuxiao WANG, Lingni ZHU, Li ZHONG, Qiong QI, Wei LI, Suping LIU, and Xiaoyu MA
Catastrophic Optical Mirror Degradation(COMD) is one of the main factors that restrict the output power and reliability of semiconductor lasers. To achieve high power and high reliability and avoid COMD at the same time, Non-absorbing Window (NAW) is often applied to semiconductor laser preparation process, which conta
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251210 (2022)
25-GHz Semiconductor Mode-locked Laser with Subpicosecond Pulse Output in the 1.5-μm Band(Invited)
Yuxiang LIU, Ruikang ZHANG, Huan WANG, Dan LU, and Lingjuan ZHAO
Ultrashort optical pulse sources have important applications in optical analog-to-digital conversion, optical fiber communication, optical THz communication, microwave photonics and other systems. Mode-locking technology is a common method for generating ultrashort pulses. Various types of mode-locked lasers, such as s
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251211 (2022)
Generation of Stretched Pulse with Hundred-femtosecond Pulse Widths Based on Multimode-fiber Interference Effect
Mengru SUN, Haiying JI, Hao XIONG, Yao HONG, Wanzhuo MA, and Tianshu WANG
Ultrashort pulse fiber lasers have received widespread attention because they play a vital role in telecommunications, biology, and photonics. Many mode-locking technologies have been applied to construct passive mode-locking fiber lasers, such as semiconductor saturable absorption mirrors, graphene, nonlinear polariza
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251212 (2022)
Finite Element Thermal Analysis of Optical Lenses in 10 kW Rectangular Spot Laser Space Combiner
Ben LI, Jingfeng ZHOU, Yi WANG, and Yang BAI
A space-transmission high-power near-infrared semiconductor laser beam with a rectangular laser spot is one of the key tools to improve the efficiency and quality of laser surface heat treatment. However, this kind of laser is difficult to apply to the surface heat treatment of flexible lasers inside workpieces. This i
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251213 (2022)
Fabrication and Photoresponse Study of the Photodetector Based on Novel NiO-Bi2Te3 Heterostructure
Minggang SHI, Haichuan MU, and Min QIAN
As a significant p-type semiconductor, NiO is widely studied for its gas sensing and electrochromism characteristics, whereas researches concerning its photodetection properties are rarely reported. Herein, we fabricated a photodetector based on NiO/Bi2Te3 heterostructure and studied the influence of NiO’s concentratio
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251214 (2022)
Experimental Study on the Spatial Performance of Photorefractive X-ray Semiconductor Ultrafast Response Chip
Xiaobo TAN, Xin YAN, Tao YI, Kai HE, Zhengzheng SHAO, Kaikai ZHOU, Guilong GAO, Tao WANG, Jun ZHANG, and Zhaowen ZHUANG
The traditional ultrafast electric vacuum devices are usually based on the mechanism of photoelectric conversion, and their performance is restricted by factors such as material response and space-charge effect. It is difficult for the devices like microchannel plate framing cameras, DIlation X-ray Imager (DIXI), strea
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251215 (2022)
Preparation and Performance of g-C3N4/Bi2S3 Composite Broad-band Photodetector
Xiangming FANG, Ping RONG, Shuai REN, Zhaoyang WANG, Shiyong GAO, and Jinzhong WANG
Broad-band Photodetectors (PDs) become a foucus of current research due to extensive use in missiles guidance, flame monitoring, chemical analysis, biomedical imaging, optical communication and so on. The PDs based on semiconductors, in particular, attach much attention in trerms of their fast response speed, high sens
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251216 (2022)
Passively Mode-locked Erbium-doped Fiber Laser Based on Nonlinear Fiber Loop Mirror
Zhaoyang ZHANG, Baole LU, Haowei CHEN, Kaige WANG, and Jintao BAI
In this paper, a passively mode-locked erbium-doped fiber laser with tunable wavelength of the "8" cavity based on a nonlinear fiber loop mirror is studied. The laser uses a 2×2 coupler with a coupling ratio of 30/70 to control a section of the laser with polarization controller. And a Sagnac ring is con
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251217 (2022)
Effect of the Thickness of the a-Si Bonding Layer at InGaAs/Si Bonded Interface on the Performance of InGaAs/Si Avalanche Photodiode
Shixian SHE, Ye ZHANG, Zhiwei HUANG, Jinrong ZHOU, and Shaoying KE
Avalanche Photodiode (APD) is a popular device for the detection of light with low energy. It has been commonly used in LIDAR, quantum communication, deep space application, and remote sensing. In comparison to visible light detection, extending the spectral range of the APD into the short-wave infrared region (especia
Acta Photonica Sinica
  • Publication Date: Feb. 25, 2022
  • Vol. 51, Issue 2, 0251218 (2022)