Patent ID: 11946879
Assignee: TOKYO INSTITUTE OF TECHNOLOGY AND
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 19:
20. An integrated circuit, comprising:
a thin film that has a band gap of 2.2 eV or more and in which a crystal includes a composite defect of an impurity atom and a vacancy;
a microwave irradiation system configured to irradiate the thin film with a microwave;
an excitation unit configured to excite the thin film; and
a detector configured to detect at least either one of an intensity of light outputted from the thin film when transitioning from an excited state to a ground state and a change in conductivity of the thin film,
wherein the excitation unit is configured to irradiate the thin film with an excitation light made incident from outside through a waveguide having a core layer that transmits light by being sandwiched between clad layers that transmit light, and
wherein the clad layer is formed such that a thickness of a region sandwiched between the core layer and the thin film becomes gradually thinner as the excitation light advances in a light guide direction.