Realization of Multimode OAM Beams with Almost the Same Divergence Angles

Table 2

Feed beams for various OAM modes.

	Target beam range	Source distribution	Feed beam range
1	()	(3.5, 4.7)	()
2		(6.0, 8.0)	()
3		(8.4, 11.2)	()
4		(10.7, 14.3)	()