OOptics Letters4/24/2026Phase-engineered distributed grating reliefs for high-power single-mode 795-nm VCSELs with on-axis emissionJulian Lindner·Stephan Reitzenstein·Valerio Torrelli·Tobias Pusch·Jochen Reichel·Markus Herper·Holger Moench·Alberto Gullino·Martino D Alessandro·Pierluigi Debernardi·A. Maaßdorf·Markus Weyers·Stephan GronenbornRead at Optics LettersTagsOptical Coatings and GratingsSurfaces, Coatings and Films