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Photonics Research 2024年第1期12卷 172-182页

作者： SHENGYANG WU benli yu LEI ZHANG Key Laboratory of Opto-electronic Information Acquisition and Manipulation Ministry of EducationAnhui UniversityHefei 230601China Information Materials and Intelligent Sensing Laboratory of Anhui Province Anhui UniversityHefei 230601China

An imperfect propagation environment or optical system would introduce wavefront aberrations to vortex *** phase aberrations and orbital angular momentum in a vortex beam are proved to be mutually restrictive in parameter *** make traditional topological charge(TC)probing methods ineffective while the phase singularity makes phase retrieval difficult due to the aliasing between the wrapped phase jump and the vortex phase *** interactive probing method is proposed to make measurements of the aberrated phase and orbital angular momentum in a vortex beam assist rather than hinder each *** phase unwrapping is liberated from the phase singularity by an annular shearing interference technique while the TC value is determined by a Moirétechnique immune to *** and experimental results proving the method effective are *** is of great significance to judge the characteristics of vortex beams passing through nonideal environments and optical systems.

关键词： vortex topological beam

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基于深度学习的光纤麦克风频带扩展

安徽大学学报（自然科学版） 2024年第3期48卷 39-45页

作者：方健甄胜来陈鑫俞本立安徽大学光电信息获取与控制教育部重点实验室安徽合肥230601 安徽大学信息材料与智能感知安徽省实验室安徽合肥230601

光纤麦克风具有体积小、精度高、抗干扰能力强等优点,能在复杂环境下拾取目标语音.然而,在采集语音过程中,光纤麦克风受响应带宽限制,出现了高频成分缺失情况,进而降低语音短时客观可懂度(short-time objective intelligibility,简称ST... 详细信息

光纤麦克风具有体积小、精度高、抗干扰能力强等优点,能在复杂环境下拾取目标语音.然而,在采集语音过程中,光纤麦克风受响应带宽限制,出现了高频成分缺失情况,进而降低语音短时客观可懂度(short-time objective intelligibility,简称STOI)和信噪比(signal-to-noise ratio,简称SNR).将时间卷积模块(temporal convolutional module,简称TCM)引入Wave-U-Net,提出TCM_Wave-U-Net.在此基础上,提出频域卷积递归神经网络(convolutional recurrent neural networks,简称CRN)与时域TCM_Wave-U-Net协同的网络(简称协同网络).实验结果表明:协同网络具有较强的泛化性和鲁棒性.该文研究结果为光纤麦克风的语音保真拾取奠定了基础.

关键词：光纤麦克风频带扩展深度学习卷积神经网络多尺度融合

Picosecond gain-switched polymer fiber random lasers

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Chinese Optics Letters 2024年第4期22卷 20-25页

作者：杜文彧高森张小娟李思祺蒯雁王治强曹志刚徐峰刘宇徐林张俊喜谢康俞本立胡志家 Information Materials and Intelligent Sensing Laboratory of Anhui Province Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of EducationSchool of Physics and Opto-electronics EngineeringAnhui UniversityHefei 230601China School of Instrument Science and Opto-electronics Engineering Laboratory of Optical Fibers and Micro-nano PhotonicsHefei University of TechnologyHefei 230009China School of Opto-electronic Engineering Zaozhuang UniversityZaozhuang 277160China

Random lasers are a type of lasers that lack typical resonator structures,offering benefits such as easy integration,low cost,and low spatial *** features make them popular for speckle-free imaging and random number ***,due to their high threshold and phase instability,the production of picosecond random lasers has still been a *** this work,we have developed three dyes incorporating polymer optical fibers doped with various scattering nanoparticles to produce short-pulsed random fiber ***,stable picosecond random laser emission lasting600 ps is observed at a low pump energy of 50μJ,indicating the gain-switching *** inversion and gain undergo an abrupt surge as the intensity of the continuously pumped light nears the threshold *** the intensity of the continuously pumped light reaches a specific value,the number of inversion populations in the“scattering cavity”surpasses the threshold *** results based on a model that considers power-dependent gain saturation confirmed the above *** research helps expand the understanding of the dynamics behind random medium-stimulated emission in random lasers and opens up possibilities for mode locking in these systems.

关键词： random laser polymer optical fiber gain-switched laser picosecond pulse

面向激光测振应用的改进相位生成载波解调算法

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光子学报 2024年第1期53卷 42-56页

作者：蒋翌超顾劭傑张刚许林广葛强吴许强俞本立安徽工程大学电气工程学院芜湖241000 安徽工程大学数理与金融学院芜湖241000 安徽大学信息材料与智能感知安徽省实验室合肥230601

为了解决相位生成载波解调方案应用于激光测振技术时,系统中存在的非线性失真问题,提出一种改进相位生成载波解调算法。该算法采用低频、大幅值的相位调制和迭代重加权椭圆特殊拟合对两路含有非线性误差的正交信号进行校正以抑制非线性... 详细信息

为了解决相位生成载波解调方案应用于激光测振技术时,系统中存在的非线性失真问题,提出一种改进相位生成载波解调算法。该算法采用低频、大幅值的相位调制和迭代重加权椭圆特殊拟合对两路含有非线性误差的正交信号进行校正以抑制非线性失真。其中,低频相位调制由三角波信号驱动压电换能器生成,确保小信号情况下椭圆拟合结果的准确性。迭代重加权椭圆特殊拟合可以减小离群数据的影响并避免拟合结果退化为双曲线,具有精度高、鲁棒性好和计算效率高的优点。实验结果表明改进相位生成载波解调算法可以有效抑制激光测振实验系统的非线性失真,在不同相位调制深度(0.8~3.4 rad)下解调信号的信纳比和总谐波失真稳定,对应的标准差分别为0.55 dB和0.03%。系统的响应线性度优于99.99%,动态范围可达103.9 dB@500 Hz,总谐波失真为1%且工作频宽为20~8000 Hz。与传统相位生成载波解调方案相比,该算法不仅显著抑制了非线性失真,还克服了椭圆拟合算法在小信号下无法工作的缺点。

关键词：激光测振技术相位生成载波解调算法低频调制迭代重加权椭圆特殊拟合非线性失真

Novel Anti-fouling Strategies of Live and Dead Soft Corals(Sarcophyton trocheliophorum):Combined Physical and Chemical Mechanisms

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Journal of Bionic Engineering 2020年第4期17卷 677-685页

作者： Limei Tian E Jin benli yu Hang Sun Yangeng Shang Wei Bing Key Laboratory of Bionic Engineering Ministry of EducationJilin UniversityChangchun 130022China Weihai Institute for Bionics-Jilin University Weihai 264207China Yantai Ice Wheel Casting Co. LtdYantai 264002China Yantai Ice Wheel Intelligent Machinery Technology Co. LtdYantai 264006China School of Chemistry and Life Science Changchun University of TechnologyChangchun 130012China

At present,biomimetic antifouling research objects are mostly concentrated on the fast-moving marine organism,but the anti-fouling effect of the low-speed or static marine equipment is not *** paper describes the anti-fouling mechanism of soft coral(Sarcophyton trocheliophorum),including the physical defense mechanism and the bactericidal ability of mucus and coral *** a sessile organisms,soft coral lacks escape ***,the study on its antibacterial strategy is significant because it can provide theoretical guidance for static *** showed that the live soft coral would molt in unfriendly environment,and the secreted mucus could defend themselves against fouling ***,Liquid Chromatography-Mass Spectrometry(LC-MS)analysis was conducted to identify the bioactive compounds of the coral powder and *** revealed that both powder and mucus contained a wide variety of toxic components,which had bactericidal ***,at the same concentration,the inhibitory effect of the main components on Gram-negative bacteria was stronger than that on positive *** findings enhance the understanding about the antifouling mechanism of soft coral and provide new ideas for design and prepare novel antifouling strategy to combat biofouling under static condition.

关键词： biomimetic antifouling soft coral antibacterial marine bacteria mucus

The Experimental Research on Near—threshold Behaviors of Erbium—doped—fiber Ring Resonator

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量子电子学报 2002年第1期19卷 7-10,78页

作者： yu benli Sun Zhipei PhysicsDepartmentAnhuiUniversity Hefei230039

In this paper we report novel experimental results of the erbium-doped-fiber ring resonator behaviors operating near threshold. The reaction of threshold on linewidth of ring's output light is pointed out. This provides a new auxiliary method to determine the threshold. The limits of finesse are analyzed. We also propose a new subsidiary method for finesse measurement based on self-homodyne by using of resonating of the intra-cavity amplified spontaneous emission (ASE) light, without external light source.

关键词：掺铒光纤环行谐振器近临界状态

基于量子级联激光光谱技术的HONO和N_(2)O_(4)气体检测

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光学学报 2023年第11期43卷 274-282页

作者：李亚繁江超超崔潇汉俞本立崔小娟安徽大学物质科学与信息技术研究院信息材料与智能感知安徽省实验室安徽合肥230601 安徽大学光电信息获取与控制教育部重点实验室安徽合肥230601

解析大气中HONO和N_(2)O_(4)的光化学循环及其来源,需要对其质量分数进行准确测量,而质量分数测量的前提是吸收线参数的准确度量。采用7.8μm室温连续量子级联激光器和长光程多次反射吸收池对实验产生的HONO和N2O4气体进行了同时测量,... 详细信息

解析大气中HONO和N_(2)O_(4)的光化学循环及其来源,需要对其质量分数进行准确测量,而质量分数测量的前提是吸收线参数的准确度量。采用7.8μm室温连续量子级联激光器和长光程多次反射吸收池对实验产生的HONO和N2O4气体进行了同时测量,确定了两种气体的吸收线频率。根据已知的1280.4 cm-1处trans-HONO的吸收线强,计算得到trans-HONO的质量分数为(0.72±0.04)×10^(-6),相应的系统最低检测限为(11.15±0.50)×10^(-9)。利用中红外量子级联光谱技术同时对HONO和N_(2)O_(4)进行分析研究,所得到的谱线参数也为HONO和N2O4质量分数的实时监测、化学反应过程的分析等提供了重要的依据。

关键词：光谱学亚硝酸中红外量子级联激光器 N_(2)O_(4)

Model-based adaptive non-null interferometry for freeform surface metrology

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Chinese Optics Letters 2018年第8期16卷 40-44页

作者：张磊周胜李东李劲松俞本立 Key Laboratory of Opto-Electronic Information Acquisition and Manipulation Ministry of EducationAnhui University Research Center of Laser Fusion China Academy of Engineering Physics

A model-based adaptive non-null interferometry （MANI） is proposed for steep optical freeform surfaces in situ testing. The deformable mirror （DM） affording the flexible compensation is monitored with the beam in the interferometer by a wavefront sensor. The residual wavefront aberration in the non-null interferogram is eliminated by the multi-configuration ray tracing algorithm based on the system model, especially the DM surface model. The final figure error can be extracted together with the surface misalignment aberration correction. Experiments proving the feasibility of the MANI are shown.

关键词： DM Model-based adaptive non-null interferometry for freeform surface metrology

用于偏振成像系统的20mm~200mm变焦物镜设计

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应用光学 2022年第5期43卷 846-852页

作者：陈鑫甄胜来方健陶善静俞本立安徽大学信息材料与智能感知安徽省实验室安徽合肥230601 安徽大学光电信息获取与控制教育部重点实验室安徽合肥230601

变焦物镜是偏振成像系统的重要组成部分,目前因变焦物镜使用较多非球面而导致价格较为昂贵。为了降低偏振成像系统变焦物镜的加工成本,设计了一款用于偏振成像系统的20 mm~200 mm变焦物镜。采用正组补偿,利用Zemax优化变焦系统,最终系... 详细信息

变焦物镜是偏振成像系统的重要组成部分,目前因变焦物镜使用较多非球面而导致价格较为昂贵。为了降低偏振成像系统变焦物镜的加工成本,设计了一款用于偏振成像系统的20 mm~200 mm变焦物镜。采用正组补偿,利用Zemax优化变焦系统,最终系统仅使用7片球面透镜,并达到良好像质,系统调制传递函数(MTF)在120 lp/mm处大于0.3,畸变小于4%,系统凸轮曲线平滑无断点。系统公差分析结果表明,公差范围设置为:镜片表面光圈公差为2,镜片或空气中心厚度公差为±0.02 mm,透镜表面中心倾斜公差为±0.025°,透镜装调公差为±0.025 mm,透镜折射率偏差为0.002,公差设置符合元件加工和系统装调工艺,对降低偏振成像系统成本具有一定的参考价值。

关键词：偏振成像系统变焦物镜正组补偿球面透镜低成本

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自由曲面干涉检测中的自适应循环补偿结构

红外与激光工程 2022年第9期51卷 131-140页

作者：刘仁虎吴金灵曹加全吴升阳周胜俞本立张磊安徽大学信息材料与智能感知安徽省实验室安徽合肥230601 安徽大学光电信息获取与控制教育部重点实验室安徽合肥230601

为缓解基于可变形镜(DM)的自适应自由曲面干涉仪存在的固有矛盾——不能同时兼顾大动态像差补偿与DM形变监测范围,前期提出了循环利用DM形变量去产生大畸变波前的自适应环形补偿器(ARCC),并得到了初步验证。为了推广其在自由曲面自适应... 详细信息

为缓解基于可变形镜(DM)的自适应自由曲面干涉仪存在的固有矛盾——不能同时兼顾大动态像差补偿与DM形变监测范围,前期提出了循环利用DM形变量去产生大畸变波前的自适应环形补偿器(ARCC),并得到了初步验证。为了推广其在自由曲面自适应检测中的应用,并结合校正光学系统的自由曲面多为低阶像差面的现实问题,对ARCC的低阶像差补偿特性做出了必要验证和研究。首先,通过Zemax建模对比了ARCC和传统单次往返补偿器(TSRC)对于像散、彗差和球差的补偿能力,得出ARCC补偿像散和彗差的能力近似为TSRC的2倍,补偿球差的能力也要显著大于TSRC,验证了ARCC的低阶像差补偿优势;其次,研究了ARCC的低阶像差类型补偿规律,得出ARCC结构中DM上的像差类型与补偿给被测面的像差类型是“一对多”或“多对一”的关系。结果证明:在实际中分别使用ARCC和TSRC对4块低阶像差自由曲面进行补偿验证,同样的DM形变量下,与传统补偿结构相比ARCC展现出更加出色的低阶像差补偿能力。

关键词：测量像差补偿自适应循环补偿结构自适应干涉仪