Abstract

We report the manufacturing and characterization of a refractive linear axicon producing a linearly increasing axial intensity Bessel-type beam over a predetermined range starting away from the axicon and without central blocking when illuminated by a plane wave. This is in contrast to a classical axicon that generates a diffraction-free beam starting from the axicon tip and extending to a range limited by the input beam aperture. The measured characteristics of the beam produced by the linear axicon, including its intensity distribution and spot size, are in good agreement with the theoretical predictions. Together with logarithmic axicon and exicon, this is another element of the axicon family that can generate a prescribed intensity distribution over a chosen range/depth of field.

© 2013 Optical Society of America

Development of spot size and lateral intensity distribution generated by exponential, logarithmic, and linear axicons

Brahim Chebbi and Ilya Golub
J. Opt. Soc. Am. A 31(11) 2447-2452 (2014)

Imaging properties of three refractive axicons

Andrew Saikaley, Brahim Chebbi, and Ilya Golub
Appl. Opt. 52(28) 6910-6918 (2013)

Characterization of a refractive logarithmic axicon

Ilya Golub, Brahim Chebbi, Dagan Shaw, and Dariusz Nowacki
Opt. Lett. 35(16) 2828-2830 (2010)

Design and manufacture of a gradient-index axicon

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Appl. Opt. 39(16) 2687-2694 (2000)

Tuning the resolution and depth of field of a lens using an adjustable ring beam illumination

Taylor Breen, Nathaniel Basque-Giroux, Ulrike Fuchs, and Ilya Golub
Appl. Opt. 59(15) 4744-4749 (2020)