NITRIDE SEMICONDUCTOR LASER
First Claim
1. A nitride semiconductor surface-emitting laser including a two-dimensional photonic crystal layer having a resonant mode in an in-plane direction, the surface-emitting laser comprising:
- an active layer;
the two-dimensional photonic crystal layer;
a semiconductor layer; and
an electrode in this order,wherein the two-dimensional photonic crystal layer contains p-type conductive InxGa1-xN (0≦
x≦
1) as a high-refractive-index medium,the semiconductor layer contains p-type conductive InyGa1-yN (0≦
y≦
1),the thickness tPhC of the two-dimensional photonic crystal layer satisfies the relation of tPhC (λ
/neff), wherein λ
denotes the lasing wavelength, and neff denotes the effective refractive index of the resonant mode, andno p-type conductive AlGaN layer is disposed between the two-dimensional photonic crystal layer and the semiconductor layer.
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Abstract
A nitride semiconductor surface-emitting laser includes a two-dimensional photonic crystal layer having a resonant mode in an in-plane direction. The surface-emitting laser includes an active layer, the two-dimensional photonic crystal layer, a semiconductor layer, and an electrode in this order. The two-dimensional photonic crystal layer contains p-type conductive InxGa1-xN (0≦x≦1) as a high-refractive-index medium. The semiconductor layer contains p-type conductive InyGa1-yN (0≦y≦1). The thickness tPhC of the two-dimensional photonic crystal layer satisfies the relation of tPhC (λ/neff), wherein λ denotes the lasing wavelength, and neff denotes the effective refractive index of the resonant mode.
15 Citations
4 Claims
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1. A nitride semiconductor surface-emitting laser including a two-dimensional photonic crystal layer having a resonant mode in an in-plane direction, the surface-emitting laser comprising:
-
an active layer;
the two-dimensional photonic crystal layer;
a semiconductor layer; and
an electrode in this order,wherein the two-dimensional photonic crystal layer contains p-type conductive InxGa1-xN (0≦
x≦
1) as a high-refractive-index medium,the semiconductor layer contains p-type conductive InyGa1-yN (0≦
y≦
1),the thickness tPhC of the two-dimensional photonic crystal layer satisfies the relation of tPhC (λ
/neff), wherein λ
denotes the lasing wavelength, and neff denotes the effective refractive index of the resonant mode, andno p-type conductive AlGaN layer is disposed between the two-dimensional photonic crystal layer and the semiconductor layer. - View Dependent Claims (2, 3)
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4. A nitride semiconductor edge-emitting laser comprising:
-
an active layer;
a low-refractive-index-medium-embedded layer containing a medium having a lower refractive index than a surrounding medium;
a semiconductor layer; and
an electrode in this order,the surrounding medium of the low-refractive-index-medium-embedded layer is p-type conductive InxGa1-xN (0≦
x≦
1),the semiconductor layer contains p-type conductive InyGa1-yN (0≦
y≦
1), andno p-type conductive AlGaN layer is disposed between the low-refractive-index-medium-embedded layer and the semiconductor layer.
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Specification