红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2015年
8期
2501-2505
,共5页
孙权社%赵发财%陈坤峰%韩忠
孫權社%趙髮財%陳坤峰%韓忠
손권사%조발재%진곤봉%한충
空间激光通信%离轴天线%光学设计%像差
空間激光通信%離軸天線%光學設計%像差
공간격광통신%리축천선%광학설계%상차
space optical communications%off-axis optical antenna%optical design%aberrations
空间激光通信终端通常依靠光学天线提高整个通信系统的发射及接收效率。提出了一种空间激光通信系统的离轴天线系统,以克服传统卡塞格林两镜系统存在接收视场小、发射效率低等缺点。设计了一个通光孔径为150 mm,放大倍率为15×,满足0.85、1.064、1.55μm多个通信波段光学天线系统。计算了初始结构参数,利用光学设计软件ZEMAX-EE对该光学天线系统进行了光线追迹和优化设计,并对设计结果进行分析。分析结果表明:在整个工作波段(0.85、1.064、1.55μm)内,点列图半径几何值小于10μrad,实现了高放大倍率、宽波段像散同时校正,在宽波段内均达到衍射极限,满足设计指标要求,能够满足高性能空间激光通信系统的要求。
空間激光通信終耑通常依靠光學天線提高整箇通信繫統的髮射及接收效率。提齣瞭一種空間激光通信繫統的離軸天線繫統,以剋服傳統卡塞格林兩鏡繫統存在接收視場小、髮射效率低等缺點。設計瞭一箇通光孔徑為150 mm,放大倍率為15×,滿足0.85、1.064、1.55μm多箇通信波段光學天線繫統。計算瞭初始結構參數,利用光學設計軟件ZEMAX-EE對該光學天線繫統進行瞭光線追跡和優化設計,併對設計結果進行分析。分析結果錶明:在整箇工作波段(0.85、1.064、1.55μm)內,點列圖半徑幾何值小于10μrad,實現瞭高放大倍率、寬波段像散同時校正,在寬波段內均達到衍射極限,滿足設計指標要求,能夠滿足高性能空間激光通信繫統的要求。
공간격광통신종단통상의고광학천선제고정개통신계통적발사급접수효솔。제출료일충공간격광통신계통적리축천선계통,이극복전통잡새격림량경계통존재접수시장소、발사효솔저등결점。설계료일개통광공경위150 mm,방대배솔위15×,만족0.85、1.064、1.55μm다개통신파단광학천선계통。계산료초시결구삼수,이용광학설계연건ZEMAX-EE대해광학천선계통진행료광선추적화우화설계,병대설계결과진행분석。분석결과표명:재정개공작파단(0.85、1.064、1.55μm)내,점렬도반경궤하치소우10μrad,실현료고방대배솔、관파단상산동시교정,재관파단내균체도연사겁한,만족설계지표요구,능구만족고성능공간격광통신계통적요구。
Space optical communications terminals frequently rely on optical telescopes to enhance the transmitted and received efficiency of the communication system. An optical design of a space laser communications optical antenna system was proposed to overcome the traditional on-axis Cassegrain optical antenna’s disadvantages of small field of view and low emission efficiency. As an example, an optical antenna system operating at 0.85 μm, 1.064 μm and 1.55 μm with aperture size 150 mm, magnification 15 was designed. The initial parameters were computed, and the ray tracing and optimization for the optical antenna system were performed with ZEMAX-EE software. The analysis results demonstrate that the Root Mean square (RMS) of a spot radius is less than 10 μrad in the working wavelength(0.85μm, 1.064μm, 1.55μm), which implements astigmatism correction and obtains a good diffraction-limited quality in a wide spectral region and a high magnification. These results prove the feasibility of the optical design method proposed.