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C A McQueen, J Arlt, and K Dholakia (1999)
An experiment to study a ''nondiffracting'' light beam
Amer. J. Phys. 67:912–915.
We present a simple experiment by which a student can
generate and study a zeroth-order Bessel beam. Such beams are
often termed nondiffracting (propagation invariant) as they
have a central maximum that can propagate for extended
distances
doi:10.1119/1.19148