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    • 8. 发明申请
    • SEMICONDUCTOR DEVICE
    • 半导体器件
    • US20150311677A1
    • 2015-10-29
    • US14680678
    • 2015-04-07
    • Renesas Electronics Corporation
    • Ryuji KOBAYASHIMasahide KOBAYASHI
    • H01S5/343H01S5/32H01S5/34H01S5/22
    • H01S5/34333H01S5/0602H01S5/0658H01S5/22H01S5/221H01S5/2216H01S5/321H01S5/3407
    • The characteristics of a semiconductor laser are improved. In a semiconductor laser having an n type cladding layer, an active layer, and a p type cladding layer, a current block layer is provided. For example, the current block layer is arranged partially between the p type cladding layer and the active layer, and in the overlapping region of the p type cladding layer and the active layer. Thus, in a current narrowing region of the overlapping region of the p type cladding layer and the active layer, the current block layer is arranged, thereby to suppress the current injected into a part of the active layer. This results in the formation of a saturable absorbing region, which causes a difference in intensity of the optical output of the semiconductor laser. This can implement self-pulsation.
    • 提高了半导体激光器的特性。 在具有n型包覆层,有源层和p型覆层的半导体激光器中,设置电流阻挡层。 例如,当前块层部分地设置在p型覆层和有源层之间,并且在p型覆层和有源层的重叠区域中。 因此,在p型覆层和有源层的重叠区域的电流变窄区域中,设置电流阻挡层,从而抑制注入有源层的一部分的电流。 这导致形成可饱和吸收区域,这导致半导体激光器的光输出的强度差。 这可以实现自我脉动。