本文選題：激光傳輸 + Mie�。� 參考：《長春理工大學(xué)》2015年碩士論文

【摘要】：伴隨科學(xué)技術(shù)的進(jìn)步,激光技術(shù)大量地被用在包括重工業(yè)、農(nóng)業(yè)、醫(yī)療、通信等在內(nèi)的各個(gè)重要領(lǐng)域。當(dāng)介質(zhì)不均勻時(shí),激光通過介質(zhì)會(huì)發(fā)生衰減,反映在實(shí)際應(yīng)用的情況中,自然形成或人為造成的煙幕等均會(huì)對(duì)其傳輸效果會(huì)造成不同程度地影響。所以,研究激光通過這類介質(zhì)時(shí)的傳輸特性長久以來一直是中外科研工作者研究、探討的共同課題。本論文是針對(duì)激光在煙幕中的傳輸這一課題,首先基于Mie散射理論對(duì)銅粉粒子和石墨粒子的散射特性進(jìn)行了理論模擬分析,將煙幕粒子對(duì)激光傳輸過程中地衰減分為散射、吸收作用,同時(shí)運(yùn)用朗伯-比爾定律對(duì)波長分別為355nm、532nm、650nm、830nm、980nm、1064nm的激光在超細(xì)銅粉煙幕以及石墨煙幕中傳輸時(shí)的透過率進(jìn)行理論模擬分析。其次,在室內(nèi)實(shí)驗(yàn)條件下,運(yùn)用超細(xì)球形銅粉、石墨粉制造煙幕,對(duì)波長為532nm、650nm、980nm的激光的透過率進(jìn)行實(shí)驗(yàn)分析,同時(shí)在對(duì)實(shí)驗(yàn)數(shù)據(jù)進(jìn)行分析、研究的基礎(chǔ)上與理論的計(jì)算結(jié)果進(jìn)行對(duì)比、分析,為激光在煙幕中傳輸?shù)膹V泛實(shí)際應(yīng)用的研究打下堅(jiān)實(shí)的理論與實(shí)驗(yàn)基礎(chǔ)。
[Abstract]:With the development of science and technology, laser technology is widely used in many important fields, such as heavy industry, agriculture, medical treatment, communication and so on. When the medium is not uniform, the laser will attenuate through the medium, which is reflected in the actual application, the natural formation or man-made smoke screen will affect the transmission effect to varying degrees. Therefore, the study of the transmission characteristics of laser passing through this kind of medium has long been a common topic for both Chinese and foreign researchers. In this paper, aiming at the topic of laser transmission in smoke screen, the scattering characteristics of copper and graphite particles are analyzed theoretically based on Mie scattering theory, and the ground attenuation of smoke particles during laser transmission is divided into scattering. At the same time, by using Lambert-Beer 's law, the transmittance of the laser with wavelength of 355nmnmP532nmO650nmO830nm ~ 980nm ~ (1064nm) in the smoke screen of ultrafine copper powder and graphite screen is simulated and analyzed by using the theoretical analysis of the transmittance of the laser in the smoke screen of ultrafine copper powder and graphite screen. Secondly, the smoke screen was manufactured by using ultrafine spherical copper powder and graphite powder under the laboratory experimental conditions. The transmittance of the laser at wavelength of 532 nm was analyzed experimentally, and the experimental data were analyzed at the same time. On the basis of this study, the theoretical results are compared and analyzed, which lays a solid theoretical and experimental foundation for the study of the wide practical applications of laser transmission in smoke screens.
【學(xué)位授予單位】：長春理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN24

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本文編號(hào)：1982136