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US 2017/0363722 A1Published application
Photo detector, photo detection device, and lidar device
AssigneeKabushiki Kaisha Toshiba
InventorsToshiya YONEHARA, Kazuhiro SUZUKI, Rei HASEGAWA
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Abstract
In one embodiment, a photo detector is provided with a semiconductor layer having a first light receiving surface and a second light receiving surface opposite to the first light receiving surface, and a diffraction grating which is provided on the first light, receiving surface side of the semiconductor layer and has convex portions. The convex portions are arranged in one direction at a predetermined cycle.
Claims19
A photo detector, comprising;
- a semiconductor layer having a first light receiving surface and a second light receiving surface opposite to the first light receiving surface;
- and
- a diffraction grating which is provided on the first light receiving surface side of the semiconductor layer and has convex portions, the convex portions being arranged in one direction at a predetermined cycle.
A photo detector, comprising:
- a semiconductor layer having a first light receiving surface and a second light receiving surface opposite to the first light receiving surface;
- a diffraction grating which is provided on the second light receiving surface side of the semiconductor layer and has convex portions, the convex portions being arranged in one direction at a predetermined cycle;
- and
- a reflective material provided on the diffraction grating at a side opposite to the semiconductor layer.
1 more element
Dependencies are inferred from the claim text.