A Spiral phase plate converts a Gaussian input profile into a donut-shaped energy ring. This element requires a collimated Single Mode (TEM00) Gaussian input beam, which it converts to a TEM01 axially symmetric mode.

Typical applications include:

- Solar coronagraphs (astronomy)

- High-resolution microscopy

- Optical tweezers for particle trapping & manipulation

- Optical Mode Generation & Conversion

- Lithography

- Quantum optics

- Ablation & Structuring

- Metal/glass cutting

- Laser drilling