SEMICONDUCTOR DEVICE: abstract simplified (18193980)

• This abstract for appeared for patent application number 18193980 Titled 'SEMICONDUCTOR DEVICE'

Simplified Explanation

The abstract describes a semiconductor device that consists of a group of quantum dots. These quantum dots are stacked in layers, with each layer having a different central wavelength at which it has the maximum gain. The layers are arranged in such a way that the central wavelengths shift sequentially along the stacking direction. The group also includes a longest wavelength layer group, which is made up of some quantum dot layers. This longest wavelength layer group contains a layer with the longest central wavelength, as well as at least one additional layer stacked on top of it. The gain at the central wavelength of the longest wavelength layer or group is higher than the gain at the central wavelength of any other quantum dot layer.

Original Abstract Submitted

In a semiconductor device, a quantum dot group includes a stack of plural quantum dot layers having different central wavelengths at which respective gains are maximum. A part of or all of the quantum dot layers are stacked so that the central wavelengths sequentially shifts along a stacking direction. The quantum dot group includes a longest wavelength layer group composed of some quantum dot layers including a longest wavelength layer having a longest central wavelength and at least one quantum dot layer stacked on the longest wavelength layer. The longest wavelength layer or the longest wavelength layer group has a larger gain at the central wavelength than the gain at the central wavelength of each of the other quantum dot layers.