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在FRED里用高斯光束集(beamlets)表述相干光源,光源的光束網(wǎng)格空間用于確定光束集的束腰和發(fā)散角。為了恰當(dāng)?shù)貙?duì)相干光束傳播特性進(jìn)行建模,光束集必須保持高斯型分布。結(jié)果,一些高斯光束要計(jì)算近似的網(wǎng)格尺寸以及相干光源的光線數(shù)。附件中的腳本程序利用欲得的光源參數(shù)計(jì)算并顯示新的相干光源的輸入。該計(jì)算器適于如下光源類(lèi)型: 5nw9zW
:' zEL[%(fnc 簡(jiǎn)易光源(Simplified Source) l.'E\3Bo N=Yi:+ 準(zhǔn)直光源或平行光源(Collimated Source or plane wave) Ji?UG@ bWzc=03 激光束(Gaussian 00 mode) ]=$ay0HC
-]MP,P% 復(fù)雜光源(Detailed Source) d-2I_ )9 EjCs Grid Plane (rectangular array of points arranged on a plane) `6F8Kqltr FnU;n Hexagonal Plane (hexagonal array of points arranged on a plane) <%5uzlp K#yH\fn8 +:8YMM#9V Gaussian beam calculator dialog VL1z$<vVXt `Wt~6D
e 詳細(xì)文檔及腳本程序可下載鏈接: f
}e7g d]M J(*"S!q)6 http://fred-kb.photonengr.com/files/2011/04/GBCalculator.pdf ^^(ZK 6
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