Bessel Beam

It is known that an axicon  transforms an incoming plane wave into a  Bessel Beam [1].

[1] Scott, G., McArdle, N.: Efficient generation of nearly diffraction-free beams using an axicon. Opt. Eng. vol 31 (1992) p.2640/2643

OpticsLand, a precision optics division of Del Mar Ventures, supplies axicons with cone angles range from 140° to 179.5° for use with virtually any laser radiation. We manufacture and supply axicons made from BK7 glass, fused silica and other materials.

Axicon lens also known as a conical lens or rotationally symmetric prism is widely used in different scientific research and applications. Axicon can be used to convert a parallel laser beam into a ring, to create a non-diffractive Bessel beam or to focus a parallel beam into long focus depth.

For example, recently researchers at Beckman Laser Institute & Medical Clinic, Irvine, California proposed a new axicon application. They use the axicon to focus a parallel beam into long focus depth as well as high confined lateral spot to develop a novel optical coherence tomographic (OCT) system.

Inphase Technologies researches use axicons in holographic data storage. They wish to determine the effects of axicons on the Fourier distribution of the random binary data spectrum of a Spatial Light Modulator (SLM).

Here you can download an article published by one of our customers about using axicon in OCT. This article contains calculations of the laser beam intensity behind axicon.

Additional useful info is available at http://zemax.com/appnotes/modeling_axicons/

Axicons diam 1” with 160º, 165º, 170º, 175º, 178º and 179.5º without AR coating are currently available in stock.

Price for single 1” uncoated axicon with “standard” cone angles is $290 for single piece, and $240 per piece for 10 pieces of each, delivery time immediate from stock.

Price for single 1” BBAR coated axicon with “standard” cone angles is $350 for single piece, and $250 per piece for 10 pieces of each.

Del Mar Ventures 4119 Twilight Ridge San Diego, CA 92130 tel (858) 755-6727 fax (858) 755-6771 v/efax (858) 630-2376 v/efax: (509) 752-0123 delmar@sciner.com optics@sciner.com http://www.sciner.com/Opticsland/

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