Volume: 48 Issue 13
24 Article(s)

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Beam Transmission and Control
Modulation of Hollow Light Field by Diffraction Effect Based on Special Shape Light Source
Xinglei Lin, Jinguang Lü, Donglin Chen, Zhengquan Xing, Yonggang Zou, and He Zhang
Objective Optical systems (OSs) that produce bottle beams (BBs) are increasingly diversifying in the literature, according to recent studies. However, the practicability of most OSs is relatively limited, and it has been difficult to meet the increasingly flexible application requirements. Therefore, under the premise
  • Publication Date: Jul. 15, 2021
  • Vol. 48 Issue 13 1305001 (2021)
Structure Design of Compact Piezoelectric Fast Steering Mirror with High Performance
Ziye Zhou, Zhongyi Feng, Linhai Huang, and Hao Xian
Objective The developments in adaptive optics, image stabilization, fast laser scanning, and optical communications have resulted in the increasing demand for high-performance fast steering mirrors (FSMs). In some optical systems, such as laser metrology, projection system, and inter-satellite optical communication, FS
  • Publication Date: Jun. 15, 2021
  • Vol. 48 Issue 13 1305002 (2021)
Biomedical Photonics and Laser Medicine
Single-Molecule Localization Image Background Denoising Based on Time-Domain Iterative Wavelet Transform
Tianqi Wu, Wen Xiao, Renjian Li, Yizhi Xu, Xuejuan Hu, and Lingling Chen
Objective Although the acquisition of single-molecule localization microscopy (SMLM) includes various noises and background information, completely removal of structural noise is difficult for current denoising algorithms (e.g., the spatial wavelet algorithm and the extreme value-based emitter recovery algorithm) emplo
  • Publication Date: Jul. 02, 2021
  • Vol. 48 Issue 13 1307001 (2021)
Fiber Optics and Optical Communications
Real-Time Correction Homodyne Symmetry Algorithm to Demodulate DFB Fiber Laser Hydrophone
Yunyun Wang, Junbin Huang, Peng Ding, Hongcan Gu, Wenzhang Song, Dan Xu, Honglin Zhao, and Xuan Zhou
Objective The demodulation algorithm based on the 3×3 coupler is one of the most widely used interferometric demodulation algorithms. It relies on the physical characteristics of the coupler to achieve symmetrical output signal, and is independent on external loading wave modulation and feedback control to achieve
  • Publication Date: Jul. 08, 2021
  • Vol. 48 Issue 13 1306001 (2021)
Dynamic Propagation Characteristics of 1.55-μm Wavelength Laser in Rain and Fog Coexisting Weather
Renjiao Yu, Zhenhua Li, Jiancheng Lai, Chunyong Wang, and Zhixiang Wu
Objective The coexistence of rain and fog is a common atmospheric phenomenon in winter. When laser is transmitted in rain and fog weather, the attenuation is not only affected by rain but also by fog. Because of the small rainfall rate, fog attenuation is usually greater than rain. Globally, numerous studies have been
  • Publication Date: Jun. 15, 2021
  • Vol. 48 Issue 13 1306002 (2021)
Fatigue Crack Prediction Method for Aluminum Alloy Based on Fiber Bragg Grating Array
Lingyu Sun, Changchao Liu, Mingshun Jiang, Lei Zhang, Faye Zhang, Qingmei Sui, and Lei Jia
Objective Under the action of long-term fatigue loading, the metal structures of the spacecraft, high-speed train, ship, and other large equipment are prone to fatigue crack in the stress concentrated part. Under the repeated action of alternating loading, the structure will be further extended, resulting in failure an
  • Publication Date: Jul. 02, 2021
  • Vol. 48 Issue 13 1306003 (2021)
Laser Devices and Laser Physics
Design of Flat Optical Frequency Comb Based on Lithium Niobate Optical Waveguide
Yu Liu, Yi Deng, Hang Wei, Chunjiang Wu, and Suchun Feng
Objective The optical frequency comb generation schemes mainly include mode-locked laser, electro-optic modulation comb, nonlinear Kerr micro-resonator comb, and nonlinear supercontinuum-based comb. For the nonlinear supercontinuum-based comb scheme, flat optical frequency comb generation has been extensively studied,
  • Publication Date: Jun. 23, 2021
  • Vol. 48 Issue 13 1301001 (2021)
Cavity-Dumped Nanosecond Thin-Disk Laser with High Average Power
Longhui Dai, Rui Liu, Faquan Gong, Xiang Li, Songwen Deng, Yong Jia, Yuqi Jin, and Gang Li
Objective Laser-matter interaction research using nanosecond pulse lasers has resulted in industrial applications, such as laser processing, laser marking, and laser cleaning, because of its advantages of moderate cost and high reliability. The repetition rate is an important indicator to describe the number of laser p
  • Publication Date: Jul. 02, 2021
  • Vol. 48 Issue 13 1301002 (2021)
1064 nm Wide-Ridge Waveguide Semiconductor Laser with Lateral Microstructure
Jun Qi, Yonggang Zou, Jie Fan, Jingjing Yang, Ying Liu, and Xiaohui Ma
Objective Semiconductor lasers have the advantages of high efficiency, easy integration, high reliability, and easy tuning; hence, they are used in various applications such as fiber coupling, seed laser sources, medical equipment, and communication systems. To increase the output power of semiconductor lasers, a wide-
  • Publication Date: Jul. 02, 2021
  • Vol. 48 Issue 13 1301003 (2021)
Passively Q-Switched a-Cut Er, Yb∶YAl3(BO3)4 Microchip Laser
Songqing Zha, Yujin Chen, Mingyao Deng, Yanfu Lin, Bingxuan Li, Yuqi Zou, Wenbin Liao, Zhanglang Lin, and Ge Zhang
Objective With their high sensitivity to Ge and InGaAs and excellent transparency in the atmosphere, eye-safe lasers emitting in the 1.5--1.6 μm spectral range have great application prospects in the lidar, rangefinder, and three-dimensional imaging. Vehicular lidars operating at 1.5 μm have attracted wide attention in
  • Publication Date: Jul. 02, 2021
  • Vol. 48 Issue 13 1301004 (2021)
Side-Pumped, Conductively Cooled (Tm, Ho)∶YLF Pulsed Laser with More than One-Hundred-Nanosecond Pulse Width
Yuhang Cai, Junxuan Zhang, Xiao Chen, Tieqiang Song, Jiqiao Liu, Weibiao Chen, and Xiaolei Zhu
Objective Owing to the advantages of being highly transmitted in the atmosphere, being safe to human eyes, being in the absorption spectrum band of water molecules, and being an efficient pump source for 3--5-μm laser, solid-state lasers emitting around 2 μm have been widely employed in many areas, including the medica
  • Publication Date: Jul. 05, 2021
  • Vol. 48 Issue 13 1301005 (2021)
Method for Self-Correction of Annular Off-Axis Aberrations in Two-Stage Tube Laser Amplifiers
Jia Li, Boyu Tian, Jiangchuan Yu, and Bin Zhang
Objective Solid-state lasers have attracted extensive attention because of their advantages of high efficiency and high beam quality. Solid-state tube lasers with zigzag beam paths (SSZTLs) combine the outstanding characteristics of rod and slab lasers, such as compact structure and light weight, and overcome the short
  • Publication Date: Jul. 02, 2021
  • Vol. 48 Issue 13 1301006 (2021)
Yb-Doped Triple-Clad Fiber for Nearly 10 kW Level Tandem-Pumped Output
Lei Zhang, Fengguang Lou, Meng Wang, Chunlei Yu, Lili Hu, Qirong Xiao, Dan Li, Ping Yan, and Mali Gong
Objective Since the development of Yb-doped fiber laser, increasing the output of a single fiber has been one of the most important directions. The output of a single fiber has now been able to attain 10 kW-level or above. However, these results are mainly laboratory reports, and few fibers have been adopted in practic
  • Publication Date: Jul. 02, 2021
  • Vol. 48 Issue 13 1315001 (2021)
610-W Continuous-Wave Single-Mode Green Laser Output Based on Highly Efficient Single-Pass Frequency Doubling
Mengqi Su, Yang You, Zhao Quan, Hui Shen, Qiurui Li, Rufeng Chen, and Yunfeng Qi
Objective High-power blue-green laser light sources are widely applied in the welding of highly reflective materials (e.g., copper and its alloys), pumping Ti:sapphire lasers, deep ultraviolet laser generation, semiconductor processing, and underwater optical communication and detection. High-power blue-green lasers ar
  • Publication Date: Jul. 02, 2021
  • Vol. 48 Issue 13 1315002 (2021)
Picosecond Pulse and High Efficiency Frequency Doubling Based on All-Polarization-Maintaining Er-Doped Fibers
Zhanjun Yang, Qiang Hao, Cheng Tang, Binghao Yu, and Heping Zeng
Objective A picosecond pulse at 780 nm has played an important role in practical applications and scientific researches. A Ti: sapphire laser is a famous light source at this wavelength range. However, due to its bulk design and complex architecture, the Ti: sapphire laser is sensitive to its environment. Compared with
  • Publication Date: Jun. 15, 2021
  • Vol. 48 Issue 13 1315003 (2021)
Materials and Thin Films
Compensation Effect of Carbon Impurities on the Resistivity of p-GaN
Xinning Wu, Zhaoyang Liu, Mingjia Liu, Yuntao Zhao, Haoran Qi, Mei Zhou, Huixing Shen, and Degang Zhao
Objective Gallium nitride (GaN) and its ternary alloys have drawn considerable attention because of their broad applications and promising market prospects for light-emitting devices. p-type doped GaN is an important part of GaN-based optoelectronic device structure. However, the applications of p-GaN are often limited
  • Publication Date: Jun. 15, 2021
  • Vol. 48 Issue 13 1303001 (2021)
Measurement and Metrology
Measurement System Design of Spatial Position Accuracy of Dynamic Targets
Liang Yang, and Ning Zhang
Objective The main dynamic performance indexes of the photoelectric theodolite are dynamic tracking accuracy and dynamic measuring accuracy. The target detection is to track the airborne flight targets, such as aircrafts, which usually consumes a lot of manpower and material resources. Therefore, the process detection
  • Publication Date: Jun. 23, 2021
  • Vol. 48 Issue 13 1304001 (2021)
Self-Calibration Model of Terrestrial Three-Dimensional Laser Scanners Considering Random Errors and Robust Estimation Solution
Tengfei Zhou, Xiaojun Cheng, Kai Huang, and Yuan Tao
Objective As an emerging technology, terrestrial laser scanners (TLSs) are used in various applications in forest resource surveys, reverse engineering, and measurement modeling. The original observations, distances, and angles of a TLS are easily affected by the external environment and instrument itself during acquis
  • Publication Date: Jul. 02, 2021
  • Vol. 48 Issue 13 1304002 (2021)
Underwater Multiple Line-Structured Light Binocular Measuring Method Based on Discrete Epipolar Curve Model
Zexiao Xie, Weijing Shao, Xiang Gao, Hanlei Gong, Haoyue Wang, and Yuqing Jiao
Objective When the binocular vision system is used to measure underwater targets, the refraction effect of water makes the measurements differ from the actual situation. The existing methods for reducing the refraction effect include the following. 1) A high-accuracy refraction model is established for calculating the
  • Publication Date: Jul. 02, 2021
  • Vol. 48 Issue 13 1304003 (2021)
Feasibility of Laser Shadow Method to Detect Two-Dimensional Wind Vector in Atmospheric Turbulence
Liujing Shen, Haiping Mei, Yichong Ren, and Junxin Zhang
Objective Atmospheric turbulence is a key research topic in the field of atmospheric and environmental science. It greatly influences the development of aerospace, aircraft safety control, and laser communication. Random fluctuations in the refractive index of the atmosphere along the laser propagation path cause a ser
  • Publication Date: Jul. 02, 2021
  • Vol. 48 Issue 13 1304004 (2021)
Micro and Nano Optics
Improvement of Luminescence Efficiency and Stability of CsPbBr3 Quantum Dot Films with Microlens Array Structure
Changfeng Chen, Yi Zheng, and Chaolong Fang
Objective Stable luminescent efficiency in inorganic halogen perovskite quantum dots (QDs) is difficult to achieve because of their degradation when exposed to air. In addition to stability, increased luminescence efficiency of QD composite films is an important factor for their future applications. Due to a sharp diff
  • Publication Date: Jul. 02, 2021
  • Vol. 48 Issue 13 1313001 (2021)
Nonlinear Optics
Interaction of Airy Beams and Soliton in Saturable Nonlinear Medium
Tao Wang, Cheng Lian, Liankai Wang, Kewei Huan, Yining Mu, and Weijun Chen
Objective In 1979, Berry and Balazs provided the first theoretical derivation of Airy wave packets from quantum mechanics. Finite-energy Airy beams (FEABs) are achieved by an exponential aperture in an optical study by Siviloglou and Christodoulides in 2007. FEABs have since proven a valuable research tool and their po
  • Publication Date: Jul. 02, 2021
  • Vol. 48 Issue 13 1308001 (2021)
Remote Sensing and Sensor
Moving Target Distance and Velocity Measurement System Based on Photo-Counting Lidar
Fanghua Liu, Yan He, Yuan Luo, Wenwu Jia, Lijun Cao, Linlin Li, Kaipeng Li, Yongqiang Chen, Shouchuan Guo, and Weibiao Chen
Objective With the development of unmanned aerial vehicle(UAV) technology, the identification and ranging of small targets at long ranges have become an essential defense requirement. The Swedish defense research agency investigates a linear detected laser range lidar for target recognition and classification, such as
  • Publication Date: Jul. 05, 2021
  • Vol. 48 Issue 13 1310001 (2021)
Research Progress of Two-Dimensional Nonlinear Optical Limiting Materials
Ningning Dong, Qianghu Liu, and Jun Wang
Significance With the rapid development of laser technologies, the number of laser weapon equipment is increasing. At the same time, human eyes, photoelectric detection equipment, and optical systems are being exposed to strong laser environment and are vulnerable to laser attacks. It is an urgent problem to ensure tha
  • Publication Date: Jun. 15, 2021
  • Vol. 48 Issue 13 1300001 (2021)