Abstract
We propose and demonstrate a method to produce a thin and highly collimated annular beam that propagates similarly to an ideal thin Gaussian ring beam, maintaining its excellent propagation properties. Our optical configuration is composed of a binary axicon, a circular binary phase grating, and a lens, making it robust and well suited for high-power lasers. It has a near-perfect circular profile with a dark center, and its large radius to waist ratio is achieved with high conversion efficiency. The measured profile and propagation are in excellent agreement with a numerical Fourier simulation we perform.
| Original language | English |
|---|---|
| Pages (from-to) | 3202-3208 |
| Number of pages | 7 |
| Journal | Applied Optics |
| Volume | 57 |
| Issue number | 12 |
| DOIs | |
| State | Published - 20 Apr 2018 |
| Externally published | Yes |
Bibliographical note
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