International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference最新文献_第3页

Applications and development of micro- or nano-metric multi degree of freedom adjusting displacement scaling mechanisms for primary mirror 微纳多自由度主镜位移调节机构的应用与发展

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586744

Bin Hu, Chuang Li, Qing Zhu, Jing Ye

{"title":"Applications and development of micro- or nano-metric multi degree of freedom adjusting displacement scaling mechanisms for primary mirror","authors":"Bin Hu, Chuang Li, Qing Zhu, Jing Ye","doi":"10.1117/12.2586744","DOIUrl":"https://doi.org/10.1117/12.2586744","url":null,"abstract":"For large aperture and high-resolution space optical cameras, the focusing requirements caused by different resolution requirements, or the requirements for the segmented primary mirror for deployable telescopes or on-orbit assembly space telescopes, the micro- or nano-metric multi degree of freedom adjusting of the primary mirror or the segment mirror is one of the inevitable development trends of the active optical system. According to the different degrees of freedom involved in the primary mirror adjustment, the micro- or nano-metric multi degree of freedom adjusting displacement scaling mechanisms of the monolithic and segmented primary mirror are studied. The development history and structural characteristics of multi degree of freedom adjusting displacement scaling mechanisms including rigid lever type, gear deceleration type, hydraulic mechanism type and compliant hinge type, as well as their research status and application fields, are introduced. The performance characteristics and applications of various displacement scaling mechanisms are analyzed and compared. Finally, according to the application requirements of space telescopes in the future, the development trend of multi degree of freedom (DOF) adjusting displacement scaling mechanism for segmented primary mirror is proposed.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130303126","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

Controllable optical quality factor in a two-ring-two-bus structure 双环双总线结构中的可控光学质量因子

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2584964

Zhang Ying, Qingzhong Huang, Liu Qiang

{"title":"Controllable optical quality factor in a two-ring-two-bus structure","authors":"Zhang Ying, Qingzhong Huang, Liu Qiang","doi":"10.1117/12.2584964","DOIUrl":"https://doi.org/10.1117/12.2584964","url":null,"abstract":"Dynamically tuning Q factor in optical resonators is now more feasible in information processing applications, such as light storage and wavelength conversion. This paper proposed and demonstrated a new dynamically tuning Q approach that is realized in coupled two rings structure. One resonator uses an add-drop configuration, coupled to another single micro-ring. The heating causes an increase in the refractive index, which in turn causes resonant wavelength redshift. This shift is a switch to control the coupling between the two rings, to tune the linewidth of light confined in the ring, equivalent to tune the quality factor. And we adjust the detuning and coupling state between the two rings to control the light coupled into the resonator. The Q factor decreases from 56,525 to 16,450 in the transmission spectrum with the different heater power. In this way, we successfully realized a modulation of the Q from high to low states in the structure. Besides, the original coupling spacing between the two rings also has an influence on the Q factor. The larger the coupling spacing, the higher the Q factor. In addition, we also study the changes of phase and delay time in the tunable process. The results show that the change of fast light (high Q) and slow light (low Q) can be realized at the same time, which would enable applications for on-chip adjustable time delay, fast/slow light and light storage.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123058734","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

Two-step preparation and properties of polyimide / zirconium composite free-supporting membrane 聚酰亚胺/锆复合自由支撑膜的两步制备及性能研究

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586805

Renchen Liu, Jingrui Lu

{"title":"Two-step preparation and properties of polyimide / zirconium composite free-supporting membrane","authors":"Renchen Liu, Jingrui Lu","doi":"10.1117/12.2586805","DOIUrl":"https://doi.org/10.1117/12.2586805","url":null,"abstract":"To discuss the preparation technology of ultra-thin Polyimide (PI)/ Zirconium (Zr) self-standing composite film. Polyamide acid (PAA) solution was synthesized with 4,4'- diaminodiphenyl ether (ODA) and pyromellitic dianhydride (PMDA) as monomers. PI films were obtained by gradient temperature rise thermal imidization. A PI self-supporting film with a thickness of about 600 nm was obtained by the corrosion of ZnO release agent with dilute hydrochloric acid. After it was fixed in a copper frame with a diameter of 15 mm, a Zr film with a thickness of about 200 nm was deposited on it by direct-current magnetron sputtering. The composite film with a thickness of about 600 nm PI/200 nm Zr was obtained. PI film increased the mechanical properties of self-supporting Zr filter film, but in order to reduce the influence of PI film on the transmittance of Zr filter film, PI film was etched and thinned by excimer laser, and the thickness of 200 nm PI/ 200 nm Zr self-supporting filter film was prepared. This method deposited 200 nm Zr film on 600 nm self-supporting PI film, and then etched part of the PI film. 160 pulses were etched with excimer laser energy density of 40 mJ/cm2 and 26 pulses were etched with 70 mJ / cm2, and 200 nm PI /200 nm Zr self-supporting composite filter film was acquired respectively.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"302 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121465445","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

Spectrum aliasing minimization for Fourier ptychographic microscopy based on annular illumination optimization 基于环形照明优化的傅里叶型显微光谱混叠最小化

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586426

Jiasong Sun, C. Zuo, Qian Chen

{"title":"Spectrum aliasing minimization for Fourier ptychographic microscopy based on annular illumination optimization","authors":"Jiasong Sun, C. Zuo, Qian Chen","doi":"10.1117/12.2586426","DOIUrl":"https://doi.org/10.1117/12.2586426","url":null,"abstract":"We present a spectrum aliasing minimization scheme for Fourier ptychographic microscopy (FPM) based on annular illumination pattern optimization. Normally, the Nyquist sampling criterion under the coherent illumination case is required due to the quasi-coherent illumination system used in the conventional FPM technique. However, the spatial sampling criterion changes with the oblique illumination angles. When the illumination NA matches the objective NA, the spatial sampling criterion should be reconsidered under the incoherent case, since the phase information is lost during intensity imaging. In this paper, an optimal annular illumination based Fourier ptychographic microscopy (OAIFPM) method is proposed. After investigating the spectrum aliasing characteristic of different spatial sampling rates and establishing an objective cost function related to the spectrum aliasing percentage and reconstruction error, the reconstruction accuracy can be improved while the incoherent spatial sampling criterion is not satisfied. The results suggest that our OAIFPM system could be a powerful imaging technique for various high-throughput microscopic applications, such as drug discovery, cellular phenotypes characterization, and identification of disease mechanisms.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114740316","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

Deep learning-based fringe pattern transformation method for phase calculation 基于深度学习的条纹图变换相位计算方法

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586621

Haotian Yu, Yang Zhao, Dongliang Zheng, Jing Han, Yi Zhang

引用次数: 1

Optical glass grinding wheel modeling and grinding simulation technology 光学玻璃砂轮建模与磨削仿真技术

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586186

Zhibin Wang, Ming-yin Jiao, F. Zhang, Yun-long Zhang, Zheng Zhang

{"title":"Optical glass grinding wheel modeling and grinding simulation technology","authors":"Zhibin Wang, Ming-yin Jiao, F. Zhang, Yun-long Zhang, Zheng Zhang","doi":"10.1117/12.2586186","DOIUrl":"https://doi.org/10.1117/12.2586186","url":null,"abstract":"With the development of optical components towards low surface damage and low scattering characteristics, more and more attention has been paid to the surface integrity of optical components. Grinding is a common rough machining process for precision optical components, and its surface quality affects the subsequent polishing efficiency and the surface integrity of optical components directly. Therefore, in this paper, studies the grinding surface morphology of ZF62 optical glass material from many aspects such as grinding wheel modeling, surface formation mechanism, and abrasive movement analysis. The paper models the grinding wheel based on the power spectral density (PSD) of the grinding wheel surface, and verifies the effectiveness of the modeling method through experiments. Basing on analyzing the surface roughness with different grinding parameters, there are conclusions as follow: The modeling of the grinding wheel surface based on PSD could effectively simulate and analyze the grinding surface of the grinding wheel. Both the simulation experiment and the actual experiment show that the consistency of the trend. The surface roughness decrease with the increasing of the grinding speed and increase with the increasing of feed rate and the grinding depth.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126260854","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

Fluorescent light error suppression for high-speed phase-shifting profilometry based on deep learning 基于深度学习的高速移相轮廓法荧光误差抑制

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586589

Yang Zhao, Nenqing Lv, Haotian Yu, Jing Han, Lianfa Bai, Dongliang Zheng

引用次数: 0

An auto-focusing reflection-type lens-less digital holographic microscope 一种自动对焦反射式无透镜数码全息显微镜

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2587376

Zhuoshi Li, C. Zuo, Qian Chen

引用次数: 3

Optical technology for future telescopes 未来望远镜的光学技术

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586867

Dae Wook Kim, Marcos A. Esparza, H. Quach, S. Rodriguez, Hyukmo Kang, Yi-Ting Feng, Heejoo Choi

引用次数: 3

GaAs material photorefractive response time measurement based on spectral probe 基于光谱探针的砷化镓材料光折变响应时间测量

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2021-01-15 DOI: 10.1117/12.2586950

Qing Yang, Fei Yin, Tao Wang, Guilong Gao, Kai He, Xin Yan

引用次数: 0