Optics & Photonics - Optical Engineering + Applications最新文献

Optics & Photonics - Optical Engineering + Applications Pub Date : 2020-09-02 DOI: 10.1051/0004-6361/202038467

D. Muller, O. C. Cyr, I. Zouganelis, H. Gilbert, R. Marsden, T. Nieves-chinchilla, E. Antonucci, F. Auchère, D. Berghmans, T. Horbury, R. Howard, S. Krucker, M. Maksimović, C. Owen, P. Rochus, J. Rodríguez-Pacheco, M. Romoli, S. Solanki, R. Bruno, M. Carlsson, A. Fludra, L. Harra, D. Hassler, S. Livi, P. Louarn, H. Peter, U. Schühle, L. Teriaca, J. C. D. T. Iniesta, R. Wimmer–Schweingruber, E. Marsch, M. Velli, A. Groof, A. Walsh, David R. Williams

引用次数: 303

Subtlety in relativity 相对论的微妙之处

Optics & Photonics - Optical Engineering + Applications Pub Date : 2017-12-13 DOI: 10.1117/12.2022734

S. Wagh

{"title":"Subtlety in relativity","authors":"S. Wagh","doi":"10.1117/12.2022734","DOIUrl":"https://doi.org/10.1117/12.2022734","url":null,"abstract":"I will describe explanations of 1) Michelson-Morley type experiments, 2) Muon decay puzzle, and 3) Doppler’s effect in light. The explanation of Michelson-Morley type experiments is based on the emission-wave mechanism. The resolution of the muon decay puzzle is then based on Pauli’s exclusion principle as applied to a system of interacting muon and electrons surrounding it during its passage in the Earth’s atmosphere. The explanation of the Doppler shift in frequency is then based on the analysis of proper locations on the light fronts. Notably, these explanations do not involve either the time-dilation or the length contraction as in the Special Theory of Relativity. That is to say, these explanations do not use the Lorentz transformations. Nevertheless, they are based on the principle that the speed of light is the same for all observers, whether accelerated or not. These results then render the concepts of special relativity, like time-dilation and length-contraction, to be inessential for physics, in general. But, these results are consistent with the framework of the Universal Theory of Relativity that allows for universal time running at the same rate for all observers and are definite pointers to subtlety in the applications of the concepts of relativity, therefore.","PeriodicalId":209106,"journal":{"name":"Optics & Photonics - Optical Engineering + Applications","volume":"130 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130205056","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

Speckle correction in polychromatic light with the self-coherent camera for the direct detection of exoplanets 直接探测系外行星的自相干相机多色光散斑校正

Optics & Photonics - Optical Engineering + Applications Pub Date : 2017-10-10 DOI: 10.1117/12.2023508

J. Mazoyer, R. Galicher, P. Baudoz, G. Rousset

{"title":"Speckle correction in polychromatic light with the self-coherent camera for the direct detection of exoplanets","authors":"J. Mazoyer, R. Galicher, P. Baudoz, G. Rousset","doi":"10.1117/12.2023508","DOIUrl":"https://doi.org/10.1117/12.2023508","url":null,"abstract":"Direct detection is a very promising field in exoplanet science. It allows the detection of companions with large separation and allows their spectral analysis. A few planets have already been detected and are under spectral analysis. But the full spectral characterization of smaller and colder planets requires higher contrast levels over large spectral bandwidths. Coronagraphs can be used to reach these contrasts, but their efficiency is limited by wavefront aberrations. These deformations induce speckles, star lights leaks, in the focal plane after the coronagraph. The wavefront aberrations should be estimated directly in the science image to avoid usual limitations by differential aberrations in classical adaptive optics. In this context, we introduce the Self- Coherent Camera (SCC). The SCC uses the coherence of the star light to produce a spatial modulation of the speckles in the focal plane and estimate the associated electric complex field. Controlling the wavefront with a deformable mirror, high contrasts have already been reached in monochromatic light with this technique. The performance of the current version of the SCC is limited when widening the spectral bandwidth. We will present a theoretical analysis of these issues and their possible solution. Finally, we will present test bench performance in polychromatic light.","PeriodicalId":209106,"journal":{"name":"Optics & Photonics - Optical Engineering + Applications","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130031147","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

See evil, hear evil 看到邪恶，听到邪恶

Optics & Photonics - Optical Engineering + Applications Pub Date : 2014-12-05 DOI: 10.1117/12.2065768

P. Pressel

{"title":"See evil, hear evil","authors":"P. Pressel","doi":"10.1117/12.2065768","DOIUrl":"https://doi.org/10.1117/12.2065768","url":null,"abstract":"The purpose of this project was to design a “telescope” whose mirrors and support structures were all made of aluminum in order for it to remain in focus for all environmental temperatures. The telescope was mounted on a gimbal structure that was an elevation over azimuth assembly. The purpose of the telescope was to track in all directions in order to detect “enemy” activities such as visual or sound detection at the site of the telescope. The final assembly was eventually purchased by the Secession Activists of Quebec to scan all around for non-French speaking dissidents seeking to spy on them. It was also shipped to South Korea to detect activities by North Korea and shipped to Northern Ireland to spy on the British and finally it also was sent to a high altitude location in Israel. The peculiar thing about the one in Israel was that similar to reading and writing Hebrew from right to left, the telescope was only allowed to scan from right to left. Two unique mechanical designs involved in this telescope are discussed here. The first one is the design of a stop at each end of the azimuth travel that was greater than 360 degrees, and the second was the design of a gearing system that drove both elevation and azimuth assemblies with no backlash","PeriodicalId":209106,"journal":{"name":"Optics & Photonics - Optical Engineering + Applications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115841745","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

Bumps in the road 路上的坎坷

Optics & Photonics - Optical Engineering + Applications Pub Date : 2014-12-05 DOI: 10.1117/12.2066922

J. Breckinridge

引用次数: 3

History of the formerly top secret KH-9 Hexagon spy satellite 以前绝密的KH-9六边形间谍卫星的历史

Optics & Photonics - Optical Engineering + Applications Pub Date : 2014-12-05 DOI: 10.1117/12.2066927

P. Pressel

引用次数: 1

Two to the sixth and counting: a lifetime of optical experiences 2的6次方，不断计数:一生的视觉体验

Optics & Photonics - Optical Engineering + Applications Pub Date : 2014-12-05 DOI: 10.1117/12.2066923

J. Mayo

{"title":"Two to the sixth and counting: a lifetime of optical experiences","authors":"J. Mayo","doi":"10.1117/12.2066923","DOIUrl":"https://doi.org/10.1117/12.2066923","url":null,"abstract":"This presentation will cover 64 years of experience with telescopes, optical components, optical coatings, large optics, optical fabrication, lasers and related subjects. It will focus on five topic areas paying special attention to critical lessons learned in these areas. Part 1 will cover contributions and inherent value of mentoring in optical and astronomical sciences. This will include specific personal experiences and valuable lessons learned from teachers and mentors going back to the beginning of the space age and the first satellites. It will also cover selected examples from the author’s mentoring and community optics and astronomy outreach efforts. Part 2 will delineate the lessons learned from the investigation and independent expert review and assessment of optical damage incidents over a period of five decades. It will also recount frequent optical misconceptions that have negatively impacted efficient system development and implementation over the years and how to avoid them. Part 3 will consist of a short tutorial on the tools, techniques, and the “how and why” of optical inspection. This will be interlinked with the previous optical damage and mistakes topic, where possible. Part 4 will consist of the author’s involvement and experiences in optical education with emphasis on the founding and early years of the University of Arizona Optical Sciences Center, now the College of Optical Sciences. Part 5 will cover the enduring issues and challenges for managers, planners and contributing scientists for large optics and telescope projects. This brief overview will follow up and expand upon the author’s presentation on this topic at the 1985 “SPIE Optical Fabrication and Testing Workshop: Large Telescope Optics”, Albuquerque, NM. Throughout all topic areas presented, the author will stress the lessons learned and the value of these lessons to the planning, management and successful execution of future optics projects and programs.","PeriodicalId":209106,"journal":{"name":"Optics & Photonics - Optical Engineering + Applications","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115787078","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

Lessons learned from starting Rochester Precision Optics 从罗切斯特精密光学开始的经验教训

Optics & Photonics - Optical Engineering + Applications Pub Date : 2014-12-05 DOI: 10.1117/12.2066943

W. Hurley

引用次数: 0

Timing is the elusive connector of dreams 时间是难以捉摸的连接梦想的纽带

Optics & Photonics - Optical Engineering + Applications Pub Date : 2014-12-05 DOI: 10.1117/12.2066911

J. Lones, Lance Lones

引用次数: 0

A smart rock 聪明的石头

Optics & Photonics - Optical Engineering + Applications Pub Date : 2014-12-05 DOI: 10.1117/12.2065765

P. Pressel

引用次数: 0