Material
UVFS
Type
Regular, precision
Dimensions
Ø25.4 mm
Surface quality, S-D
40-20
Surface irregularity, RMS
<λ/4 @ 632.8 mm
Apex angle
90 – 179°
Apex angle tolerance
±0.02 – 0.5°
AR coatings
UV, VIS, NIR, uncoated
Plano-convex axicons (conical lenses) are used for a variety of applications.
Altechna offers two types of plano-convex axicons: regular and precision. Regular axicons create an annular beam in a far field, while precision-type axicons also transform a Gaussian beam into a non-diffractive Bessel beam in the near field.
The quality of generated ring and Bessel beam as well as all mechanical tolerances, are fully evaluated in our metrology laboratory using different measurement methods. Please feel free to contact our support team with any questions you may have.
| Main features | Regular | Precision |
|---|---|---|
| Production method: | Conventional polishing | CNC polishing |
| Tip accuracy: | Medium | Very high |
| Performance: | Ring generation | Ring + Bessel beam generation |
| Apex angle: | 90 - 179° | 170 - 179° |
| Apex angle tolerance: | ± 0.5° | ± 0.05° |
| Application: | Laser drilling, microscopy, medical applications | Scanning imaging systems, atom or molecule guiding, microfabrication |
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