Samsung Electronics Co., Ltd.

Gwangju Institute of Science and Technology

Gunwu Ju

Byunghoon Na

Yonghwa Park

Changyoung Park

Yongchul Cho

Yongtak Lee

An optical device includes an active layer that includes at least two outer barriers and at least one coupled quantum well that is inserted between the at least two outer barriers. Each coupled quantum well includes at least three quantum well layers and at least two coupling barriers that are respectively provided between the at least three quantum well layers. Thicknesses of two quantum well layers disposed at opposite end portions of the at least three quantum well layers are less than a thickness of the other quantum well layer disposed between the two quantum well layers disposed at the opposite end portions. A bandgap of the two quantum well layers disposed at the opposite end portions may be higher than a bandgap of the other quantum well layer disposed between the two quantum well layers.

Growing community of inventors

Daegu, South Korea

Gunwu Ju