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Plano-Convex (PCX) Bessel Grade Axicons


  • 0.05° Apex Angle Tolerance
  • Uncoated and AR Coated Options Available
  • Transform Gaussian Beams into Bessel Beams
  • Plano-Convex (PCX) Ring Grade Axicons Available for Beam Shaping Applications

Plano-Convex (PCX) Bessel Grade Axicons feature one conical surface and one plano surface. When used with a collimated Gaussian beam, these lenses are used to create an approximation of a diffraction-free Bessel beam which is ideal for a range of medical, research, measurement, and alignment applications. Plano-Convex (PCX) Bessel Grade Axicons feature a precision fused silica substrate and are available uncoated or with a wide selection of anti-reflection (AR) coating options.

Note: For more information on Axicons, please review our application note: An In-Depth Look at Axicons.

A Bessel beam is a non-diffractive beam comprised of rings equal in power to one another. Although Bessel beams are only theoretically possible because they require an infinite amount of energy, the output of Plano-Convex (PCX) Axicons offer a good approximation by maintaining the non-diffractive Bessel beam properties over a distance significantly longer than a similar Gaussian beam.

For optimum performance, we recommend using Plano-Convex (PCX) Axicons in conjunction with one of our beam expanders in order to ensure a beam diameter of at least 50% of the clear aperture.

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