Vertical cavity surface emitting laser device
First Claim
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1. A surface emitting laser device comprising:
- a first reflective mirror;
a second reflective mirror having a periodic-refractive-index structure in which the refractive index periodically changes in the in-plane direction of a plane opposing the first reflective mirror; and
an active layer disposed between the first reflective mirror and the second reflective mirror,wherein the periodic-refractive-index structure includes a plurality of parts that disorder the periodicity of the periodic-refractive-index structure of the second reflective mirror, andwherein the periodic-refractive-index structure is structured such that light incident on the periodic-refractive-index structure in the perpendicular direction to the in-plan direction of the periodic-refractive-index structure causes resonance in the in-plane direction and the light is emitted in the direction perpendicular to the in-plane direction,wherein the second reflective mirror comprises a plurality of layers each having a periodic-refractive-index structure.
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Abstract
A vertical cavity surface emitting laser device includes a first reflective mirror layer, a second reflective mirror layer, and an active layer disposed therebetween, wherein at least one of the first reflective mirror layer and the second reflective mirror layer includes a periodic-refractive-index structure in which the refractive index periodically changes in the in-plane direction and a part of the periodic-refractive-index structure includes a plurality of parts that disorder the periodicity.
16 Citations
16 Claims
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1. A surface emitting laser device comprising:
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a first reflective mirror; a second reflective mirror having a periodic-refractive-index structure in which the refractive index periodically changes in the in-plane direction of a plane opposing the first reflective mirror; and an active layer disposed between the first reflective mirror and the second reflective mirror, wherein the periodic-refractive-index structure includes a plurality of parts that disorder the periodicity of the periodic-refractive-index structure of the second reflective mirror, and wherein the periodic-refractive-index structure is structured such that light incident on the periodic-refractive-index structure in the perpendicular direction to the in-plan direction of the periodic-refractive-index structure causes resonance in the in-plane direction and the light is emitted in the direction perpendicular to the in-plane direction, wherein the second reflective mirror comprises a plurality of layers each having a periodic-refractive-index structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A surface emitting laser device comprising:
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a first reflective mirror; a second reflective mirror having a periodic-refractive-index structure in which the refractive index periodically changes in the in-plane direction of a plane opposing the first reflective mirror; and an active layer disposed between the first reflective mirror and the second reflective mirror, wherein the periodic-refractive-index structure includes a plurality of parts that disorder the periodicity of the periodic-refractive-index structure of the second reflective mirror, and wherein the periodic-refractive-index structure is structured such that light incident on the periodic-refractive-index structure in the perpendicular direction to the in-plan direction of the periodic-refractive-index structure causes resonance in the in-plane direction and the light is emitted in the direction perpendicular to the in-plane direction, wherein the periodic-refractive-index structure comprises a first medium and a second medium, the second medium having a refractive index higher than that of the first medium, and wherein the device further comprises a layer comprising a medium having a refractive index lower than that of the second medium disposed between the second reflective mirror having the periodic-refractive-index structure and the active layer.
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13. A surface emitting laser device comprising:
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a first reflective mirror; a second reflective mirror having a periodic-refractive-index structure in which the refractive index periodically changes in the in-plane direction of a plane opposing the first reflective mirror; and an active layer disposed between the first reflective mirror and the second reflective mirror, wherein the periodic-refractive-index structure includes a plurality of parts that disorder the periodicity of the periodic-refractive-index structure of the second reflective mirror, and wherein the periodic-refractive-index structure is structured such that light incident on the periodic-refractive-index structure in the perpendicular direction to the in-plan direction of the periodic-refractive-index structure causes resonance in the in-plane direction and the light is emitted in the direction perpendicular to the in-plane direction, wherein the interval between the parts that disorder the periodicity of the periodic-refractive-index structure is set so that the parts that disorder the periodicity serve as light-emitting parts and light components in each of the parts that disorder the periodicity are coupled with each other.
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14. A surface emitting laser device comprising:
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a first reflective mirror; a second reflective mirror having aperiodic-refractive-index structure in which the refractive index periodically changes in the in-plane direction of a plane opposing the first reflective mirror; and an active layer disposed between the first reflective mirror and the second reflective mirror, wherein the periodic-refractive-index structure includes a plurality of parts that disorder the periodicity of the periodic-refractive-index structure of the second reflective mirror, and wherein the periodic-refractive-index structure is structured such that light incident on the periodic-refractive-index structure in the perpendicular direction to the in-plan direction of the periodic-refractive-index structure causes resonance in the in-plane direction and the light is emitted in the direction perpendicular to the in-plane direction, wherein the periodic-refractive-index structure comprises a first area in which the parts that disorder the periodicity are disposed and a second area in which the parts that disorder the periodicity are not disposed, and the second area is positioned so as to surround the first area. - View Dependent Claims (15)
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16. A surface emitting laser device comprising:
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a first reflective mirror; a second reflective mirror having a periodic-refractive-index structure in which the refractive index periodically changes in the in-plane direction of a plane opposing the first reflective mirror; and an active layer disposed between the first reflective mirror and the second reflective mirror, wherein the periodic-refractive-index structure includes a plurality of parts that disorder the periodicity of the periodic-refractive-index structure of the second reflective mirror, and wherein the periodic-refractive-index structure is structured such that light incident on the periodic-refractive-index structure in the perpendicular direction to the in-plan direction of the periodic-refractive-index structure causes resonance in the in-plane direction and the light is emitted in the direction perpendicular to the in-plane direction, wherein an energy level of a plurality of parts that disorder the period is positioned within 50% from the center of a photonic bandgap of the periodic-refractive-index structure in a range between the center and the band edge of the photonic bandgap.
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Specification