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    • 22. 发明申请
    • Semiconductor laser
    • 半导体激光器
    • US20060098704A1
    • 2006-05-11
    • US11269627
    • 2005-11-09
    • Tsutomu YamaguchiTakehiro NishidaHarumi NishiguchiHitoshi TadaYasuaki Yoshida
    • Tsutomu YamaguchiTakehiro NishidaHarumi NishiguchiHitoshi TadaYasuaki Yoshida
    • H01S5/00
    • H01S5/22
    • A semiconductor laser is provided which emits laser light in which the intensity center of the far-field pattern in the horizontal direction does not vary with variation of the optical output and in which the shape of the far-field pattern in the horizontal direction is stable. The width of trenches is determined so that the magnitude (E1) of the electric field at the center of a ridge and the magnitude (E2) of the electric field at the edges of the trenches provide. a ratio E1/E2 that is larger than 0.0001 and smaller than 0.01. In a semiconductor laser with a double-channel ridge structure, layers having a larger equivalent refractive index than the trenches exist outside the trenches. Accordingly, the semiconductor absorbs the light distributed outside the trenches and it is possible to obtain laser light in which the intensity center of the far-field pattern in the horizontal direction does not vary with variation of the optical output and in which the shape of the far-field pattern in the horizontal direction is stable.
    • 提供一种半导体激光器,其发射激光,其中远场图案的水平方向的强度中心不随光输出的变化而变化,并且其中水平方向上的远场图案的形状是稳定的 。 确定沟槽的宽度,使得脊的中心处的电场的大小(E1)和沟槽边缘处的电场的大小(E2)提供。 大于0.0001且小于0.01的比E1 / E2。 在具有双沟道脊结构的半导体激光器中,具有比沟槽更大的等效折射率的层存在于沟槽外部。 因此,半导体吸收分布在沟槽外侧的光,能够获得激光,其中远场图案的强度中心在水平方向上不随光输出的变化而变化,并且其形状 水平方向的远场模式是稳定的。