MODAL

作品数：573被引量：975H指数：14
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Analysis and measurement of vibration characteristics of a hollowing defect based on a laser self-mixing interferometer
《Chinese Physics B》2024年第12期289-299,共11页Yu-Xin Chen Jin-Bo Chen Peng Cao You-Guang Zhao Jun Wang Xu-Wei Teng Chi Wang 
Project supported by the National Key Research and Development Program of China(Grant No.2023YFF0722900);the Beijing Engineering Research Center of Aerial Intelligent Remote Sensing Equipments Fund(Grant No.AIRSE20233);the National Natural Science Foundation of China(Grant No.62175144)。
To solve the problems with the existing methods for detecting hollowing defects,such as inconvenient operation,low efficiency and intense subjectivity,and to improve the efficiency of the acoustic-optic fusion method ...
关键词：hollowing defect Kirchhoff's classical theory of circular plate laser self-mixing interference hammering method MODAL 
Continuous-wave optical enhancement cavity with 30-kW average power
《Chinese Physics B》2023年第3期258-261,共4页柳兴 陆心怡 王焕 颜立新 李任恺 黄文会 唐传祥 Ronic Chiche Fabian Zomer 
the Fund from Tsinghua University Initiative Scientific Research Program,China(Grant No.20191081195).
Optical enhancement cavity(OEC)is a powerful tool for fundamental research and diagnostics.In this paper,the progress of a continuous-wave OEC to realize of megawatt cavity for a novel light source based on a steady-s...
关键词：optical enhancement cavity continuous-wave laser modal instability high power cavity 
Broadband energy harvesting based on one-to-one internal resonance被引量：1
《Chinese Physics B》2020年第10期195-201,共7页Wen-An Jiang Xin-Dong Ma Xiu-Jing Han Li-Qun Chen Qin-Sheng Bi 
Project supported by the National Natural Science Foundation of China (Grant Nos. 11632008 and 11702119);the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20170565);China Postdoctoral Science Foundation (Grant No. 2020M671353);Jiangsu Planned Projects for Postdoctoral Research Funds, China (Grant No. 2020Z376)。
We design an electromechanical transducer harvesting system with one-to-one internal resonance that can emerge a broader spectrum vibrations. The novel harvester is composed of a Duffing electrical circuit coupled to ...
关键词：energy harvesting internal resonance BROADBAND nonlinear modal interactions 
Discrete state space method and modal extension method based impact sound synthesis model
《Chinese Physics B》2018年第11期270-277,共8页Xu-Hua Tian Ke-An Chen Yan-Ni Zhang Han Li Jian Xu 
Project supported by the National Natural Science Foundation of China(Grant Nos.11574249 and 11874303);the Natural Science Basic Research Plan in Shaanxi Province of China(Grant No.2018JQ1001)
The efficient and accurate synthesis of physical parameter-controllable impact sounds is essential for sound source identification. In this study, an impact sound synthesis model of a cylinder is proposed based on dis...
关键词：impact sound synthesis discrete state space contact force 
Single fundamental mode photonic crystal VCSEL with high power and low threshold current optimized by modal loss analysis被引量：4
《Chinese Physics B》2017年第1期200-207,共8页Yi-Yang Xie Qiang Kan Chen Xu Kun Xu Hong-Da Chen 
supported by the National Basic Research Program of China(Grant Nos.2010CB934104,2009CB320300,and 2011CBA00608);the National Natural Foundation of China(Grant Nos.61604007,61378058,61376049,61575008,and 61574011)
The characteristics of the photonic crystal vertical cavity surface emitting lasers（PhC-VCSELs） were investigated by using the full vector finite-difference time-domain（FDTD） method through the transverse mode los...
关键词：vertical cavity surface emitting lasers single fundamental mode mode loss 
Switchable multi-wavelength fiber laser based on modal interference
《Chinese Physics B》2015年第8期317-322,共6页马林 孙将 齐艳辉 康泽新 简水生 
A comb fiber filter based on modal interference is proposed and demonstrated in this paper. Here two cascaded uptapers are used to excite the cladding mode, and a core-offset jointing point is used to act as an interf...
关键词：fiber laser up-taper core-offset modal interferometer 
All-fiber modal interferometer based on an up-taper-core-offset structure for curvature sensing被引量：1
《Chinese Physics B》2015年第4期207-210,共4页马林 齐艳辉 孙将 康泽新 简水生 
A high-sensitivity curvature sensor based on an up-taper-core-offset structure is proposed and demonstrated in this paper. Here two specially designed cascaded up-tapers with maximum diameters of 247 μm and 251 μm, ...
关键词：curvature sensor up-taper core-offset modal interferometer 
Mechanism of micro-waviness induced KH_2PO_4 crystal laser damage and the corresponding vibration source被引量：1
《Chinese Physics B》2012年第5期34-42,共9页李明全 陈明君 安晨辉 周炼 程健 肖勇 姜伟 
Project supported by the National Natural Science Foundation of China (Grant No. 50875066)
The low laser induced damage threshold of the KH2PO4 crystal seriously restricts the output power of inertial confinement fusion.The micro-waviness on the KH2PO4 surface processed by single point diamond turning has a...
关键词：laser induced damage threshold micro-waviness Fourier modal theory power spectrum density 
High precision Zernike modal gray map reconstruction for liquid crystal corrector被引量：2
《Chinese Physics B》2010年第6期367-374,共8页刘超 穆全全 胡立发 曹召良 宣丽 
Project supported by the National Natural Science Foundation of China (Grants Nos.60736042,60578035 and 50703039);Science and Technology Cooperation Project between Chinese Academy of Sciences and Jilin Province (Grant No.2008SYHZ0005)
This paper proposes a new Zernike modal gray map reconstruction algorithm used in the nematic liquid crystal adaptive optics system. Firstly, the new modal algorithm is described. Secondly, a single loop correction ex...
关键词：liquid crystal device adaptive optics modal gray map reconstruction 
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