激光光束质量综合评价的探讨
1650
中国激光36卷
Radius/mm
图1(a)6个高斯光束以六角形孔排列;(b)相干和非相干光束桶中功率曲线
Fig.1(a)SixGaussianinputbeamsarrangedina“bolthole”beampattern;(b)power—in—the-bucket
curves
forcoherent
andincoherent
bolt—holebeams
8
6
-
盆
基4
~
奄
2
O
:◆
5
●
O
20
406080
100
口肠
图2
LP。.模与LP。z模叠加后的肝因子随LP。z模所占比例n的变化。(a)非相干叠加;(b)相干叠加(驴为相位差)
Fig.2
Beam
qualityfactorof
coherentmixedmodes
versus
thefractionofthetotallightintensitycarriedbythehigher—order
mode.(a)Incoherentand(b)coherentsuperpositionofLP01andLPozmodes.出isthephasedifference
betweenthe
two
constituentmodes
图3厄米一高斯光场TEM05,TEMl3(25。),TEMz2,TEM。8,TEM;。(50。),TEM。TEM6。的模场分布
Fig.3
Intensitydistributionof
M2一factor
of
Hermite-GaussianTEM05,TEMl3(25。),TEM22,TEM38.TEM40(50。),TEM5"
TEM6lmodes
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