Double bessel beam producing method and apparatus

Details Double bessel beam producing method and apparatus Double bessel beam producing method and apparatus

1996-11-25

2000-01-18

Spyrou, Cassandra

Optical: systems and elements

Light interference

359900, 359558, G02B 2700

Patent

active

060162236

ABSTRACT:
A double Bessel beam is produced such that two Bessel beams are superimposed on each other with respect to amplitude so as to interfere with each other. Each of the Bessel beams has a shape of the zero-order bessel function of the first kind and a light amplitude distribution different in diameter from that of the other. An apparatus for producing a double Bessel beam includes a device for producing two Bessel beams each having a shape of the zero-order Bessel function of the first kind and a light amplitude distribution different in diameter from the other, and a device for superimposing the two Bessel beams on each other with respect to amplitude so as to interfere with each other.

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