Nomenclature of Spiral phase plate

Nomenclature of Spiral phase plate

SPP-XXX-X-XXX-X is the common format of the type name. The naming principle of spiral phase plates is easy to illustrate with the following example.

The models listed in the following table are examples

First, SPP is abbreviation of Spiral phase plate, and the second part is the wavelength.

For the third, it is topological charge. A topological charge of 1 means that the phase change of the output beam 360° is 2π. And a topological charge of 6 means that the phase change of the output vortex light is 12π.

For the fourth part, as the figure shows, S means that the shape of the lens is square. R means that the shape of the lens is round. Behind the shape is the size.

The last section represents whether to coat or not. C is abbreviation of coating. The efficiency of the coating is 95%. Efficiency without coating is 85%.

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