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    • 5. 发明授权
    • GaN-based semiconductor laser device
    • GaN基半导体激光器件
    • US07167489B2
    • 2007-01-23
    • US10490582
    • 2002-07-18
    • Toshiyuki KawakamiYukio YamasakiTomoki OnoShigetoshi ItoSusumu Omi
    • Toshiyuki KawakamiYukio YamasakiTomoki OnoShigetoshi ItoSusumu Omi
    • H01S3/098H01S3/13H01S5/00
    • H01S5/32341H01S5/0654H01S5/0655H01S5/10H01S5/1064H01S5/2231
    • According to an aspect of the present invention, a nitride semiconductor laser device includes a nitride semiconductor active layer, and a stripe-shaped waveguide for guiding light generated in the active layer. At least one pair of light-absorbing films are provided in at least local regions on the opposite sides of the stripe-shaped waveguide, to reach a distance within 0.3 μm from the waveguide. According to another aspect of the present invention, a gan-based semiconductor laser device includes first conductivity type semiconductor layers, a semiconductor active layer and second conductivity type semiconductor layers stacked sequentially. The laser device further includes a ridge stripe provided to cause a refractive index difference for confinement of light in a lateral direction crossing a longitudinal direction of a cavity, and a current-introducing window portion provided on the ridge stripe. The current-introducing window portion includes a narrow portion that is locally narrowed compared to the width of the ridge stripe.
    • 根据本发明的一个方面,氮化物半导体激光器件包括氮化物半导体有源层和用于引导在有源层中产生的光的条形波导。 至少一对光吸收膜设置在条状波导的相对侧上的至少局部区域中,以达到距波导0.3μm的距离。 根据本发明的另一方面,一种基于半导体的半导体激光器件包括依次层叠的第一导电型半导体层,半导体有源层和第二导电型半导体层。 激光装置还包括设置成使得在与空腔的纵向方向交叉的横向方向上限制光的折射率差异的脊条和设置在脊条上的电流引入窗口部分。 电流引入窗口部分包括与脊条的宽度相比局部变窄的窄部分。