Featured Vortex Phase Plates

RPC Photonics is now offering a vortex phase plate with charge 2 (VPP-2) in addition to its current VPP-1 product for charge-1 vortices.

Vortex phase plates impart a spiral phase to an incoming wavefront and are used in a wide variety of fields such as communications, astronomy, and particle trapping.

RPC Photonics utilizes its laserwriting process to produce vortex phase plates as analog surface-relief patterns and has offered for some time a vortex phase plate product that includes several charge-1 vortex patterns designed for wavelengths in the range of 400 to 1000 microns.

We are now offering a similar product, model VPP-2, with continuous-phase charge 2 vortex phase plates also designed for wavelengths in the range of 400 to 1000 microns.

Measured surface profile of charge-2 vortex pattern

The geometry for our current vortex products is shown below, offered as polymer replicas on a glass substrate.

The layout of vortex patters is illustrated below ( the center singularity is not usable):

370.1	394.0	419.1	436.1	465.2	Wavelength map (nm) associated with 2π phase depth for product vPP-2 (master u7155).
493.6	521.0	544.4	567.8	598.0
638.2	661.2		708.9	748.5
779.8	806.8	828.8	851.9	897.0
925.7	954.3	978.1	1004.1	1026.8