Journal of the Optical Society of America and Review of Scientific Instruments最新文献_第2页

Time jitter generation and injection algorithms for high-speed applications. 高速应用的时间抖动生成和注入算法。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0085432

Tong Wu, K. Song, Hongwei Zhao

{"title":"Time jitter generation and injection algorithms for high-speed applications.","authors":"Tong Wu, K. Song, Hongwei Zhao","doi":"10.1063/5.0085432","DOIUrl":"https://doi.org/10.1063/5.0085432","url":null,"abstract":"Time jitter is an important means for evaluating the performance of high-speed communication systems. Current high-speed digital designs require faster edge speeds and smaller effective data windows. Therefore, analysis of the root cause of jitter has become the key factor in determining the success or failure of a design. To analyze the jitter source of the whole link, the jitter is usually extracted and analyzed by software or hardware at the receivers. To verify the accuracy of jitter extraction at the receivers, many instrument manufacturing companies have developed oscilloscope software to inject jitter at the transmitters, but the core algorithms for jitter generation are commercially sensitive and the software cannot inject all types of jitter, particularly bounded uncorrelated jitter, into the pure signals. This paper proposes a software jitter modeling and injection algorithm that can be implemented in MATLAB and includes transmitter test signal modeling, jitter generation, and the injection of various types of jitter. Unlike other research and commercial software, the proposed algorithm enables the injection of various types of jitter, notably bounded uncorrelated jitter, into test signals. This algorithm is suitable for integration into real-time oscilloscopes for jitter generation and injection.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"35 1","pages":"054706"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83955769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A stick-slip linear actuator with high speed and nano-resolution by resonance/non-resonance hybrid driving. 采用共振/非共振混合驱动的高速纳米分辨率粘滑线性驱动器。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0082660

Peng Ning, Guangda Qiao, Xiao Xia, Xiaohui Lu, Tinghai Cheng

{"title":"A stick-slip linear actuator with high speed and nano-resolution by resonance/non-resonance hybrid driving.","authors":"Peng Ning, Guangda Qiao, Xiao Xia, Xiaohui Lu, Tinghai Cheng","doi":"10.1063/5.0082660","DOIUrl":"https://doi.org/10.1063/5.0082660","url":null,"abstract":"To achieve high speed, nano-resolution, and large stroke, a resonance/non-resonance hybrid piezoelectric stick-slip actuator with a lever-type flexure hinge (LTFH-PSSA) is proposed in this work. The actuator can achieve high speed and large stroke in the resonance mode by the stick-slip working principle and achieve nano-resolution in the non-resonant mode by the direct drive working principle. The excitation electrical signals used in the two working modes are the sine waveform and half-sine waveform, respectively. Compared with the traditional sawtooth waveform, the excitation signal of the sine and half-sine waveforms have no sudden change of voltage, which are more conducive to reduce the impact and vibration of the system. Moreover, a series of static analysis and modal analysis of the stator are carried out by the finite element method. The experimental system is built to test the output characteristics of the LTFH-PSSA. In the resonance state by the stick-slip working principle, the impedance analysis and frequency characteristic test of the LTFH-PSSA are carried out, which states that the tested resonance frequency agrees well with the simulated ones. When the locking force, the voltage, and the frequency are 2 N, 100 Vp-p, and 1850 Hz, the speed of the LTFH-PSSA is up to 52.71 mm/s, and the backward motion is suppressed completely as well. In the non-resonance state, the resolution can reach 2.19 nm and 2.69 nm in the forward and backward motion, respectively. So far, the proposed actuator ranks first in speed and resolution among all reported LTFH-PSSAs.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"39 1","pages":"055002"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83619208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Direct current magnetic Hall probe technique for measurement of field penetration in thin film superconductors for superconducting radio frequency resonators. 用于超导射频谐振器薄膜超导体场穿透测量的直流磁霍尔探头技术。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0083309

I. Senevirathne, A. Gurevich, J. Delayen

{"title":"Direct current magnetic Hall probe technique for measurement of field penetration in thin film superconductors for superconducting radio frequency resonators.","authors":"I. Senevirathne, A. Gurevich, J. Delayen","doi":"10.1063/5.0083309","DOIUrl":"https://doi.org/10.1063/5.0083309","url":null,"abstract":"Superconducting Radio Frequency (SRF) cavities used in particle accelerators are typically formed from or coated with superconducting materials. Currently, high purity niobium is the material of choice for SRF cavities that have been optimized to operate near their theoretical field limits. This brings about the need for significant R & D efforts to develop next generation superconducting materials that could outperform Nb and keep up with the demands of new accelerator facilities. To achieve high quality factors and accelerating gradients, the cavity material should be able to remain in the superconducting Meissner state under a high RF magnetic field without penetration of quantized magnetic vortices through the cavity wall. Therefore, the magnetic field at which vortices penetrate a superconductor is one of the key parameters of merit of SRF cavities. Techniques to measure the onset of magnetic field penetration on thin film samples need to be developed to mitigate the issues with the conventional magnetometry measurements that are strongly influenced by the film orientation and shape and edge effects. In this work, we report the development of an experimental setup to measure the field of full flux penetration through films and multi-layered superconductors. Our system combines a small superconducting solenoid that can generate a magnetic field of up to 500 mT at the sample surface and three Hall probes to detect the full flux penetration through the superconductor. This setup can be used to study alternative materials that could potentially outperform niobium, as well as superconductor-insulator-superconductor (SIS) multilayer coatings on niobium.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"12 1","pages":"055104"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75748135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Time-resolved vibrational-pump visible-probe spectroscopy for thermal conductivity measurement of metal-halide perovskites. 金属卤化物钙钛矿热导率测量的时间分辨振动泵可见探针光谱。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0083763

Shunran Li, Zhenghong Dai, Linda Li, N. Padture, Peijun Guo

{"title":"Time-resolved vibrational-pump visible-probe spectroscopy for thermal conductivity measurement of metal-halide perovskites.","authors":"Shunran Li, Zhenghong Dai, Linda Li, N. Padture, Peijun Guo","doi":"10.1063/5.0083763","DOIUrl":"https://doi.org/10.1063/5.0083763","url":null,"abstract":"Understanding thermal transport at the microscale to the nanoscale is crucially important for a wide range of technologies ranging from device thermal management and protection systems to thermal-energy regulation and harvesting. In the past decades, non-contact optical methods, such as time-domain and frequency-domain thermoreflectance, have emerged as extremely powerful and versatile thermal metrological techniques for the measurement of material thermal conductivities. Here, we report the measurement of thermal conductivity of thin films of CH3NH3PbI3 (MAPbI3), a prototypical metal-halide perovskite, by developing a time-resolved optical technique called vibrational-pump visible-probe (VPVP) spectroscopy. The VPVP technique relies on the direct thermal excitation of MAPbI3 by femtosecond mid-infrared optical pump pulses that are wavelength-tuned to a vibrational mode of the material, after which the time dependent optical transmittance across the visible range is probed in the ns to the μs time window using a broadband pulsed laser. Using the VPVP method, we determine the thermal conductivities of MAPbI3 thin films deposited on different substrates. The transducer-free VPVP method reported here is expected to permit spectrally resolving and spatiotemporally imaging of the dynamic lattice temperature variations in organic, polymeric, and hybrid organic-inorganic semiconductors.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"8 1","pages":"053003"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75885911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Self-triggering topology for high-power nanosecond pulse generators based on avalanche transistors Marx bank circuits and linear transformer driver. 基于雪崩晶体管、马克思组电路和线性变压器驱动的大功率纳秒脉冲发生器自触发拓扑。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0088708

Zichen Deng, Qi Yuan, W. Ding, Yanan Wang, Lin-Mao Ren, Zhenbo Wan

{"title":"Self-triggering topology for high-power nanosecond pulse generators based on avalanche transistors Marx bank circuits and linear transformer driver.","authors":"Zichen Deng, Qi Yuan, W. Ding, Yanan Wang, Lin-Mao Ren, Zhenbo Wan","doi":"10.1063/5.0088708","DOIUrl":"https://doi.org/10.1063/5.0088708","url":null,"abstract":"In recent years, several novel avalanche transistor-based power synthesis topologies have been proposed to improve the output performance of pulse generators based on avalanche transistors. The most promising is the topology based on avalanche transistors Marx Bank Circuits (MBCs) and linear transformer driver (LTD). However, it suffers from the same problems as other semiconductor switch-based LTD generators. The greater the number of LTD modules, the higher the requirements for synchronization and drive capability of the trigger system. This paper proposes a new self-triggering topology for pulse generators based on avalanche transistors MBCs and LTD, which significantly simplifies the entire generator's requirement for trigger system synchronization and driving capability. First, the circuit topology and its operation principle are introduced. Then, three prototypes with one trigger LTD module and three self-triggering LTD modules are developed. The output characteristics are experimentally investigated. The results verify the feasibility of the proposed topology. Finally, the output amplitude and the rise time are 3.35 kV/3.7 ns, 4.12 kV/3.7 ns, and 4.88 kV/4.0 ns on a 25 Ω resistive load, respectively. All generators can operate at 1 kHz. The topology proposed in the article maximally simplifies the requirements for synchronization and drive capability of the trigger system for generators based on avalanche transistor MBCs and LTD.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"37 1","pages":"054702"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81431421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Incipient fault diagnosis for the cam-driven absolute gravimeter. 凸轮驱动绝对重力仪的早期故障诊断。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0079424

Ruo Hu, Jinyang Feng, Zonglei Mou, Xunlong Yin, Zhenfei Li, Hongrong Ma

{"title":"Incipient fault diagnosis for the cam-driven absolute gravimeter.","authors":"Ruo Hu, Jinyang Feng, Zonglei Mou, Xunlong Yin, Zhenfei Li, Hongrong Ma","doi":"10.1063/5.0079424","DOIUrl":"https://doi.org/10.1063/5.0079424","url":null,"abstract":"The vibration disturbance caused by incipient faults is an important factor affecting the measurement accuracy of the cam-driven absolute gravimeter. Based on the characteristics of the cam-driven absolute gravimeter, such as the small amplitude of the incipient faults, the inadequate representation of features for the faults, and hard-to-find in the noise, a novel method for incipient fault diagnosis of the cam-driven absolute gravimeter is put forward in this paper, which integrates the parameter-optimized Variational Mode Decomposition (VMD) with Light Gradient Boosting Machine (LightGBM). The sparrow search algorithm is used to optimize the VMD parameters. The parameter-optimized VMD algorithm is used to adaptively decompose the vibration signals of the gravimeter under different cases, and then an effective intrinsic mode function (IMF) is selected based on the Pearson correlation coefficient. Some high-frequency IMFs are subjected to adaptive noise reduction combined with low-frequency IMF reconstruction, and then the multi-scale permutation entropy with sensitive characteristics under different time scales is extracted as the fault feature vectors. The extracted multi-dimensional vector matrix is entered into the LightGBM classifier to realize the accurate diagnosis of the incipient faults for the cam-driven absolute gravimeter. The test results show that this method can effectively detect various incipient failures of the cam-driven absolute gravimeter, with an identification accuracy of 98.41%. With this method, the problem of low measurement accuracy for the cam-driven absolute gravimeter caused by the incipient faults is solved, and the rapid tracing and accurate positioning of these faults for the gravimeter are realized, promising a good prospect for engineering application.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"16 1","pages":"054501"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90205567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Easy and computer-time-saving implementation of the van der Pauw method including anisotropy and probe positioning correction factors using approximate closed-form analytical functions. 采用近似封闭形式的解析函数实现了包括各向异性和探头定位校正因子在内的范德堡方法，简便且节省计算机时间。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0068682

S. Hurand, T. Chommaux, Pierre-Olivier Renault, Thierry Girardeau, Fabien Paumier

引用次数: 1

Development of a transient complex impedance measurement device used in quasi-isentropic compression experiments. 准等熵压缩实验用瞬态复阻抗测量装置的研制。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0079336

Zhongyu Zhou, Z. Gu, F. Tan, Jianheng Zhao, Chengwei Sun, Cangli Liu

引用次数: 1

Magnetic communication by polarization helicity modulation using atomic magnetometers. 原子磁强计极化螺旋调制磁通信。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0086169

I. Fan, S. Knappe, V. Gerginov

引用次数: 2

Working characteristics of a magnetostrictive vibration energy harvester for rotating car wheels. 旋转车轮用磁致伸缩振动能量采集器的工作特性。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0078131

Huifang Liu, Weiwei Dong, Yunlong Chang, Yifei Gao, Wencheng Li

{"title":"Working characteristics of a magnetostrictive vibration energy harvester for rotating car wheels.","authors":"Huifang Liu, Weiwei Dong, Yunlong Chang, Yifei Gao, Wencheng Li","doi":"10.1063/5.0078131","DOIUrl":"https://doi.org/10.1063/5.0078131","url":null,"abstract":"The practice of harvesting vibration energy from machine tools, windmill blades, etc., and converting it into electric energy to power low-power electronic circuits has attracted wide attention from experts and scholars. Abundant vibrations that exist in the moving vehicle can be harvested to power sensors in tire pressure monitoring. In this paper, for the first time, a device is proposed to harvest the rotational vibration energy with the iron-gallium alloy (magnetostrictive material) as the core material. Such a device utilizes the coupling characteristics of Villarreal effect and Faraday electromagnetic effect to convert the vibration energy generated by the moving vehicle into electric energy. Upon completion of the design of the magnetostrictive rotational vibration energy harvester, the influence law of key factors, including substrate material, substrate size, and pre-magnetization field arrangement on the harvesting capability of the device, was studied in detail through experiments. An electric motor and vibration exciter were used to apply varied excitation forms to the harvester, and the output patterns of the harvester under conditions of wheel rotation, road bumps, and random vibration were fully analyzed. In addition, the correlation between the deformation of the cantilever beam and harvester performance was also investigated. The results have shown that at the acceleration of 9.6 g and the rotational speed of 90 r/min, the harvester can reach the output voltage of 1.22 V. Consequently, it demonstrates the feasibility of employing the magnetostrictive harvester to gather rotational vibration energy and provides theoretical guidance for further and deeper research on the harvester.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"93 1","pages":"055001"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83863634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4