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    • 4. 发明授权
    • Single mode vertical cavity surface emitting laser using photonic crystals with a central defect
    • 使用具有中心缺陷的光子晶体的单模垂直腔表面发射激光器
    • US06810056B1
    • 2004-10-26
    • US10256001
    • 2002-09-26
    • Jan LipsonThomas LenoskyHongyu Deng
    • Jan LipsonThomas LenoskyHongyu Deng
    • H01S500
    • H01S5/18319H01S5/105H01S5/18327H01S2301/166
    • A vertical cavity surface emitting laser (VCSEL) using photonic crystals with a central defect. At least one of the mirror layers of a VCSEL includes a photonic crystal with a central defect. The central defect, which is surrounded by a periodic structure of holes or cavities, permits laser light to propagate and exit the VCSEL. Semi-insulating regions are formed in the active region such that when cavities are drilled in the photonic crystal and penetrate the active region, the cavities pass through the semi-insulating regions. This reduces the surface recombination that would otherwise occur in the active region and prevents the threshold current from increasing. The photonic crystal with a central defect has a reflectivity that is wavelength dependent. The VCSEL thus emits a single mode.
    • 使用具有中心缺陷的光子晶体的垂直腔表面发射激光器(VCSEL)。 VCSEL的至少一个镜层包括具有中心缺陷的光子晶体。 由孔或腔的周期性结构包围的中心缺陷允许激光传播并离开VCSEL。 在有源区域中形成半绝缘区域,使得当在光子晶体中钻孔并穿透有源区域时,腔体通过半绝缘区域。 这减少了否则将在有源区域中发生的表面复合并且防止阈值电流增加。 具有中心缺陷的光子晶体具有波长依赖性的反射率。 因此,VCSEL发出单一模式。