Axicons
Outstanding precision for a wide range of applications.
Axicon lenses - Highly precise from asphericon
In contrast to aspheric lenses, the shape of an axicon resembles a cone. Due to the conical shape of the axicon lens so-called bessel beams, ring-shaped beam profiles, can be generated. The diameter of the ring beam depends on the axicon angle and decreases as the distance between the axicon and image plane grows. The ring width remains constant.
Applications of an axicon
The axicon is primarily used in the field of beam shaping and in various laser applications. A particular use is also the generation of non-diffractive Bessel-like beams. An area with almost constant intensity distribution, the length of which is defined by the angle and diameter of the axicon lens, is of interest here. Bessel beams are non-diffractive and ideal for applications in medicine, research, in measuring technology and for adjustments. Specifically, they find use e.g. in optical tweezers and in light sheet [fluorescence microscopy}(/en/solutions/applications/life-science/fluorescence-microscopy/).
In combination with other axicons or lenses, various beam profiles can be generated, such as collimated ring beams and variable ring-shaped focal points.
The optical effect in combination with a laser beam expander, a lens or a second axicon is shown below.
Optical effect of an axicon in combination with other optical elements for generating Bessel beams
Combination with another optical element
Effect with a third optical element
Axicons from asphericon
Based on high-end technologies asphericon manufactures axicons with surface shape deviations (RMSi) of up to 0.04 µm. Together with our customers, we develop and produce suitable solutions from a large selection of optical glasses, from prototypes to series production. Take advantage of individual custom solutions,optical coatings or the innovative variety of stocked axicons from the StockOptics product line. The latter are available with surface deviations of RMSi ≤ 0.07 µm in our webshop.
In order to simplify alignment and achieve optimal imaging results, axicons from asphericon can also be precisely aligned using specially developed mounts. In addition, the mounted axicons, like all mounted optics from asphericon, can be easily screwed to other elements via a metric fine thread. Learn more about the benefits of asphericons mounted lenses.
Thanks to their conical shape, all axicons can be used in a wide variety of applications.
RoHS & REACH conformity
asphericon manufactures according to RoHS and REACH regulations which is guaranteed by appropriate certificates.
Customer-specific Axicons
Based on your individual specifications, our optical designers develop the right axicon - Thanks to the latest production and measuring technology, a high level of precision is guaranteed. Coated or uncoated, as an unmounted optical component or mounted axicon, almost all optically effective materials with accuracies of up to 200 nm global form errors (irregularities) or 40 nm RMSi are suitable for production using specially developed CNC-controlled grinding and polishing processes. You also benefit from the following specifications:
- Customer-specific Axicons for the UV/VIS/IR range
- Individual optical designs for a wide range of applications
- Excellent surface quality with roughness values as low as 5 Å
- High-end coatings
Specifications
Customized Axicons* | |
---|---|
Diameter | 1 - 420 mm |
Diameter Tolerance | +/- 0,03 mm |
RMS irregularities (RMSi) | 40 nm |
Surface imperfections (Scratch/Dig) | 20-10 |
Coating | Customer specific |
Laser damage threshold | NA |
Measurement (optional) | Full-surface interferometric |
Delivery time | From 3-4 weeks |
📎 Download Production capabilities
StockOptics Axicons
Discover our exclusive selection of off-the-shelf a|Axicons. They are convincing with surface form deviation of RMSi ≤0.07 µm and the following specifications:
- Available in two diameters (25.4 mm and 50.8 mm)
- Suitable for high power laser applications
- Available with 4 standard coatings
- Delivery directly from stock
- RoHS compliance
Request a quote
Unmounted Optics
Product Code | RMSi [nm] | Scratch-Dig | Diameter [mm] | Angle [degree] | Edge Thickness [mm] | λDesign [nm] | Material | Coating | Price uncoated | Price coated | |
---|---|---|---|---|---|---|---|---|---|---|---|
XFL25-005-U-U | 70 | 40-20 | 25.4 | 0.5 | 5.0 | 780 | Fused Silica | A / B / C / X | 552.00 | 665.00 | Quote |
XFL25-010-U-U | 70 | 40-20 | 25.4 | 1.0 | 5.0 | 780 | Fused Silica | A / B / C / X | 552.00 | 665.00 | Quote |
XFL25-020-U-U | 70 | 40-20 | 25.4 | 2.0 | 5.0 | 780 | Fused Silica | A / B / C / X | 552.00 | 665.00 | Quote |
XFL25-050-U-U | 70 | 40-20 | 25.4 | 5.0 | 5.0 | 780 | Fused Silica | A / B / C / X | 552.00 | 665.00 | Quote |
XFL25-100-U-U | 70 | 40-20 | 25.4 | 10.0 | 5.0 | 780 | Fused Silica | A / B / C / X | 552.00 | 665.00 | Quote |
XFL25-200-U-U | 70 | 40-20 | 25.4 | 20.0 | 5.0 | 780 | Fused Silica | A / B / C / X | 552.00 | 665.00 | Quote |
XFL50-005-U-U | 70 | 40-20 | 50.8 | 0.5 | 8.0 | 780 | Fused Silica | A / B / C / X | 896.00 | 1045.00 | Quote |
XFL50-020-U-U | 70 | 40-20 | 50.8 | 2.0 | 8.0 | 780 | Fused Silica | A / B / C / X | 896.00 | 1045.00 | Quote |
XFL50-050-U-U | 70 | 40-20 | 50.8 | 5.0 | 8.0 | 780 | Fused Silica | A / B / C / X | 896.00 | 1045.00 | Quote |
XFL50-100-U-U | 70 | 40-20 | 50.8 | 10.0 | 8.0 | 780 | Fused Silica | A / B / C / X | 896.00 | 1045.00 | Quote |
XFL50-200-U-U | 70 | 40-20 | 50.8 | 20.0 | 8.0 | 780 | Fused Silica | A / B / C / X | 896.00 | 1045.00 | Quote |
Mounted Optics
Product Code | RMSi [nm] | Scratch-Dig | Diameter [mm] | Angle [degree] | Edge Thickness [mm] | λDesign [nm] | Material | Coating | Price uncoated | Price coated | |
---|---|---|---|---|---|---|---|---|---|---|---|
XFM25-005-U-U | 70 | 40-20 | 25.4 | 0.5 | 5.0 | 780 | Fused Silica | A / B / C / X | 552.00 | 665.00 | Quote |
XFM25-010-U-U | 70 | 40-20 | 25.4 | 1.0 | 5.0 | 780 | Fused Silica | A / B / C / X | 552.00 | 665.00 | Quote |
XFM25-020-U-U | 70 | 40-20 | 25.4 | 2.0 | 5.0 | 780 | Fused Silica | A / B / C / X | 552.00 | 665.00 | Quote |
XFM25-050-U-U | 70 | 40-20 | 25.4 | 5.0 | 5.0 | 780 | Fused Silica | A / B / C / X | 552.00 | 665.00 | Quote |
XFM25-100-U-U | 70 | 40-20 | 25.4 | 10.0 | 5.0 | 780 | Fused Silica | A / B / C / X | 552.00 | 665.00 | Quote |
XFM25-200-U-U | 70 | 40-20 | 25.4 | 20.0 | 5.0 | 780 | Fused Silica | A / B / C / X | 552.00 | 665.00 | Quote |
Coating options*
AR-Coatings |
---|
A: RMAX <1.0%, 532 nm, AOI=0° |
B: RMAX <1.0%, RAVG ≤0.4%, 632-780 nm, AOI=0° |
C: RMAX <1.0%, 1064 nm, AOI=0° |
X: RMAX <1.0%, 355 nm, AOI=0° |
📎 StockOptics Catalog Europe 2024