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US 9,228,698 B2Granted
Terahertz wave generating device which outputs a terahertz frequency electromagnetic wave via Cherenkov phase matching
AssigneeAdvantest Corporation
InventorsKazunori Shiota, Eiji Kato
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Abstract
An electromagnetic wave emission device includes a nonlinear crystal which receives exciting light Lp having two wavelength components λ1 and λ2, and outputs terahertz waves L1-L6, a total reflection layer which is in contact with the nonlinear crystal, and totally reflects the terahertz waves L2, L4, and L6 output from the nonlinear crystal, a substrate which mounts the total reflection layer, and top clads which are placed on an opposing surface of the nonlinear crystal, and transmit the terahertz waves L1-L6.
Claims10
An electromagnetic wave emission device comprising:
- a nonlinear crystal that receives exciting light having at least two wavelength components, and outputs a terahertz wave having a frequency equal to or more than 0.03 THz and equal to or less than 10 THz via Cherenkov phase matching;
- and
- a total reflection layer that is in contact with the nonlinear crystal, and totally reflects the terahertz wave output from the nonlinear crystal,
- wherein the total reflection layer is a single optical adhesive layer,
- wherein the nonlinear crystal includes a contact surface in contact with the total reflection layer, and an opposing surface opposing the contact surface, and
- wherein the electromagnetic wave emission device further comprises an electromagnetic wave transmitter that is arranged on a side of the opposing surface with respect to the nonlinear crystal, and transmits the terahertz wave.
3 more elements
Dependencies are inferred from the claim text.