Off-axis spiral phase mirrors for generating high-intensity optical vortices
In this work, we present a novel, to the best of our knowledge, and practical method for generating optical vortices in high-power laser systems. Off-axis spiral phase mirrors are used at oblique angles of incidence in the beam path after amplification and compression, allowing for the generation of...
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Veröffentlicht in: | Optics letters 2020-04, Vol.45 (8), p.2187-2190 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | In this work, we present a novel, to the best of our knowledge, and practical method for generating optical vortices in high-power laser systems. Off-axis spiral phase mirrors are used at oblique angles of incidence in the beam path after amplification and compression, allowing for the generation of high-power optical vortices in almost any laser system. An off-axis configuration is possible via modification of the azimuthal gradient of the spiral phase helix and is demonstrated with a simple model using a discrete spiral staircase. This work presents the design, fabrication, and implementation of off-axis spiral phase mirrors in both low- and high-power laser systems. |
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ISSN: | 0146-9592 1539-4794 |
DOI: | 10.1364/OL.387363 |