| 主权项 |
1. A plasmon generator comprising a main body, and a front protrusion protruding from the main body, wherein
the front protrusion has a proximal portion which is a boundary with the main body, and a near-field light generating surface which is a protruding end, the main body has a first inclined surface and a second inclined surface each facing toward a first imaginary plane including the near-field light generating surface, the first inclined surface and the second inclined surface are at a distance from each other and aligned in a first direction parallel to the first imaginary plane, each of the first inclined surface and the second inclined surface has a first edge located at a smallest distance from the first imaginary plane, and a second edge located at a largest distance from the first imaginary plane, the first edge and the second edge of each of the first and second inclined surfaces are both straight-line shaped, an entirety of the first edge of the first inclined surface and an entirety of the first edge of the second inclined surface are located on a first imaginary straight line extending in the first direction, an entirety of the second edge of the first inclined surface and an entirety of the second edge of the second inclined surface are located on a second imaginary straight line extending in the first direction, each of the first inclined surface and the second inclined surface is inclined with respect to both of the first imaginary plane and a second imaginary plane, the second imaginary plane including the first imaginary straight line and being perpendicular to the first imaginary plane, the proximal portion of the front protrusion is located between the first inclined surface and the second inclined surface, and the plasmon generator is configured to excite a surface plasmon on the main body based on light, and to generate near-field light from the near-field light generating surface of the front protrusion based on the surface plasmon. |
