Optical device including three-coupled quantum well structure
CHO Yongchul, Y Lee, NA Byunghoon… - US Patent …, 2017 - Google Patents
US9841617B2 - Optical device including three-coupled quantum well structure - Google Patents
US9841617B2 - Optical device including three-coupled quantum well structure - Google Patents …
US9841617B2 - Optical device including three-coupled quantum well structure - Google Patents …
Optical modulator having reflection layers
P Changyoung, NA Byunghoon, P Yonghwa - US Patent 9,740,032, 2017 - Google Patents
An optical modulator is provided, including a lower reflection layer, an active layer formed on
the lower reflection layer, and an upper reflection layer formed on the active layer. The active …
the lower reflection layer, and an upper reflection layer formed on the active layer. The active …
Optical device including three-coupled quantum well structure having asymmetric multi-energy levels
NA Byunghoon, P Changyoung… - US Patent 10,727,370, 2020 - Google Patents
Provided is an optical device including an active layer, which includes two outer barriers and
a coupled quantum well between the two outer barriers. The coupled quantum well includes …
a coupled quantum well between the two outer barriers. The coupled quantum well includes …
Optical device including three-coupled quantum well structure having asymmetric multi-energy levels
NA Byunghoon, P Changyoung… - US Patent 11,476,385, 2022 - Google Patents
Provided is an optical device including an active layer, which includes two outer barriers and
a coupled quantum well between the two outer barriers. The coupled quantum well includes …
a coupled quantum well between the two outer barriers. The coupled quantum well includes …
Quantum cascade laser
T Kato - US Patent 11,196,233, 2021 - Google Patents
(57) ABSTRACT A quantum cascade laser has a core region including a first injection layer,
an active region, and a second injection layer. The active region includes a first well layer, a …
an active region, and a second injection layer. The active region includes a first well layer, a …