Patent ID: 11892715
Assignee: PSIQUANTUM, CORP.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A wafer comprising:
a substrate comprising silicon or germanium;
a buffer layer coupled to the substrate and configured to relieve stress within the wafer; and
a layer stack disposed on a top surface of the buffer layer, the layer stack including:
a plurality of electro-optic material layers; and
a plurality of interlayers interleaved with the plurality of electro-optic material layers,

wherein the plurality of interlayers maintains a first lattice structure at a room temperature and at a cryogenic temperature; and
wherein the plurality of electro-optic material layers are under tensile stress and maintain a second lattice structure and crystallographic phase at the room temperature and the cryogenic temperature.