Gradient Background in Octane Blender

Support Materials and Textures
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Does anyone know how I can achieve this type of gradient background in octane blender?

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03c5fcaeecd07b9cf49c0e81ef247088736×920 53.6 KB

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7c7263d7823a35e65fd391ea1c57a6b6564×846 38.1 KB

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f7986967cf4c121d7029748a43740986736×736 49.1 KB

Screenshot 2024-10-14 121725
Screenshot 2024-10-14 121725774×908 382 KB

Screenshot 2024-10-14 121740
Screenshot 2024-10-14 121740768×904 792 KB