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    • 8. 发明授权
    • Distributed feedback (DFB) quantum dot laser structure
    • 分布式反馈(DFB)量子点激光器结构
    • US07551662B2
    • 2009-06-23
    • US12096351
    • 2006-11-24
    • Dae Kon OhJin Hong LeeJin Soo KimSung Ui HongByung Seok ChoiHyun Soo KimSung Bock Kim
    • Dae Kon OhJin Hong LeeJin Soo KimSung Ui HongByung Seok ChoiHyun Soo KimSung Bock Kim
    • H01H3/08H01S5/00
    • H01S5/12B82Y20/00H01S5/0425H01S5/3412H01S5/34306H01S2301/185
    • A distributed feedback (DFB) quantum dot semiconductor laser structure is provided. The DFB quantum dot semi-conductor laser structure includes: a first clad layer formed on a lower electrode; an optical waveguide (WG) formed on the first clad layer; a grating structure layer formed on the optical WG and including a plurality of periodically disposed gratings; a first separate confinement hetero (SCH) layer formed on the grating structure layer; an active layer formed on the first SCH layer and including at least a quantum dot; a second SCH layer formed on the active layer; a second clad layer formed on the second SCH layer; an ohmic layer formed on the second clad layer; and an upper electrode formed on the ohmic layer. Accordingly, an optical WG is disposed on the opposite side of the active layer from the grating structure layer, thereby increasing single optical mode efficiency. And, an asymmetric multi-electrode structure is used for applying current, thereby maximizing purity and efficiency of the single mode semiconductor laser structure.
    • 提供了分布式反馈(DFB)量子点半导体激光器结构。 DFB量子点半导体激光器结构包括:形成在下电极上的第一覆层; 形成在第一包层上的光波导(WG); 光栅结构层,形成在光学WG上并且包括多个周期性布置的光栅; 形成在所述光栅结构层上的第一分离限制性杂(SCH)层; 形成在第一SCH层上并包括至少一个量子点的有源层; 形成在所述有源层上的第二SCH层; 形成在第二SCH层上的第二覆层; 形成在所述第二覆盖层上的欧姆层; 和形成在欧姆层上的上电极。 因此,光学WG设置在有源层与光栅结构层的相反侧,从而提高单一光模式效率。 并且,使用非对称多电极结构来施加电流,从而最大化单模半导体激光器结构的纯度和效率。
    • 9. 发明申请
    • Distributed Feedback (Dfb) Quantum Dot Laser Structure
    • 分布式反馈(Dfb)量子点激光器结构
    • US20080279243A1
    • 2008-11-13
    • US12096351
    • 2006-11-24
    • Dae Kon OHJin Hong LeeJin Soo KimSung Ui HongByung Seok ChoiHyun Soo KimSung Bock Kim
    • Dae Kon OHJin Hong LeeJin Soo KimSung Ui HongByung Seok ChoiHyun Soo KimSung Bock Kim
    • H01S5/00
    • H01S5/12B82Y20/00H01S5/0425H01S5/3412H01S5/34306H01S2301/185
    • A distributed feedback (DFB) quantum dot semiconductor laser structure is provided. The DFB quantum dot semi-conductor laser structure includes: a first clad layer formed on a lower electrode; an optical waveguide (WG) formed on the first clad layer; a grating structure layer formed on the optical WG and including a plurality of periodically disposed gratings; a first separate confinement hetero (SCH) layer formed on the grating structure layer; an active layer formed on the first SCH layer and including at least a quantum dot; a second SCH layer formed on the active layer; a second clad layer formed on the second SCH layer; an ohmic layer formed on the second clad layer; and an upper electrode formed on the ohmic layer. Accordingly, an optical WG is disposed on the opposite side of the active layer from the grating structure layer, thereby increasing single optical mode efficiency. And, an asymmetric multi-electrode structure is used for applying current, thereby maximizing purity and efficiency of the single mode semiconductor laser structure.
    • 提供了分布式反馈(DFB)量子点半导体激光器结构。 DFB量子点半导体激光器结构包括:形成在下电极上的第一覆层; 形成在第一包层上的光波导(WG); 光栅结构层,形成在光学WG上并且包括多个周期性布置的光栅; 形成在所述光栅结构层上的第一分离限制性杂(SCH)层; 形成在第一SCH层上并包括至少一个量子点的有源层; 形成在所述有源层上的第二SCH层; 形成在第二SCH层上的第二覆层; 形成在所述第二覆盖层上的欧姆层; 和形成在欧姆层上的上电极。 因此,光学WG设置在有源层与光栅结构层的相反侧,从而提高单一光模式效率。 并且,使用非对称多电极结构来施加电流,从而最大化单模半导体激光器结构的纯度和效率。