| 摘要 |
<p>A semiconductor optical apparatus of the invention has a quantum well super-lattice structure consisting of only a direct transition semiconductor or both of a direct transition semiconductor and an indirect transition semiconductor. In the semicondcutor optical apparatus of the invention, by using an absorption saturation phenomenon of excitons in the direct transition semiconductor constructing the quantum well super-lattice structure, a non-volatile information recording apparatus which can record, reproduce, and erase informatin at a high speed even at the room temperature or even by irradiating a light of a low intensity is realized.</p> |
