Optimization of Broadband Multilayer Mirror Reflectivity via a Genetic Algorithm.
We report on the results of computationally designing and optimizing multilayer mirrors for broadband reflectivity in a region spanning from the vacuum ultraviolet to the infrared. Such a mirror would open up new possibilities for future space observatories. Because of the immense number of possible...
| Publicado en: | Journal of the Utah Academy of Sciences, Arts & Letters Vol. 94; pp. 317 - 325 |
|---|---|
| Autores principales: | , , |
| Formato: | Artículo |
| Publicado: |
Utah Academy of Sciences, Arts & Letters
2017
|
| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=129554517&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 129554517 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: B0JA jtl: Journal of the Utah Academy of Sciences, Arts & Letters maglogo: N pubinfo: dt: 2017 vid: 94 pid: 59066 pub: Utah Academy of Sciences, Arts & Letters artinfo: ui: 129554517 ppf: 317 ppct: 8 formats: fmt: @attributes: type: P size: 957KB tig: atl: Optimization of Broadband Multilayer Mirror Reflectivity via a Genetic Algorithm. aug: au: Greenburg, Michael Allred, David D. Turley, R. Steven affil: Brigham Young University su: Multilayer mirrors Broadband communication systems Reflectance Genetic algorithms Aluminum coating sug: subj: Coating, engraving, cold and heat treating and allied activities Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers Wired Telecommunications Carriers Multilayer mirrors Broadband communication systems Reflectance Genetic algorithms Aluminum coating ab: We report on the results of computationally designing and optimizing multilayer mirrors for broadband reflectivity in a region spanning from the vacuum ultraviolet to the infrared. Such a mirror would open up new possibilities for future space observatories. Because of the immense number of possible layer combinations and thicknesses for a multilayer mirror, we automated the mirror selection process with a genetic algorithm. Starting with a random object population within the simulation, a genetic algorithm iteratively selects and mutates the best portion of a population of objects that fit given design criteria to create a new population; this can be repeated as many times as desired. Our genetic algorithm yielded a high broadband reflectance mirror, which was then optimized via gradient search within the program. We found that placing a few layers under an aluminum coating can significantly increase extreme ultraviolet reflectivity, which would give access to important spectral lines such as that of the dominant He-II transition. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
|---|