Terahertz-wave generation device and measurement apparatus including the same
AssigneeCanon Kabushiki Kaisha
InventorTakahiro Sato
Life of this patent
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Abstract
At least one terahertz-wave generation device configured to generate a terahertz wave includes a polarization control unit configured to control a polarization direction of light from a light source, and a waveguide including a nonlinear optical crystal disposed such that the light having the polarization direction controlled by the polarization control unit is incident on the nonlinear optical crystal. The nonlinear optical crystal emits a terahertz wave upon the light being incident thereon. The polarization control unit is further configured to control an electric-field intensity of the light to be incident on the nonlinear optical crystal in a direction of a Z-axis of the nonlinear optical crystal.
Claims19
A terahertz-wave generation device configured to generate a terahertz wave, comprising:
- a polarization control unit configured to control a polarization direction of light from a light source;
- and
- a waveguide including a nonlinear optical crystal disposed such that, when the light having the polarization direction controlled by the polarization control unit is incident on the nonlinear optical crystal, the nonlinear optical crystal emits a terahertz wave upon the light being incident thereon,
- wherein the polarization control unit is further configured to control an electric-field intensity of the light to be incident on the nonlinear optical crystal in a direction of a Z-axis of the nonlinear optical crystal.
A method for generating a terahertz wave, comprising the steps of:
- controlling a polarization direction of light from a light source;
- and
- causing the light, having the polarization direction controlled in the step of controlling, to be incident on a nonlinear optical crystal so as to generate the terahertz wave,
- wherein, in the step of controlling, an electric-field intensity of the light to be incident on the nonlinear optical crystal in a direction of a Z-axis of the nonlinear optical crystal is controlled.
Dependencies are inferred from the claim text.