JP2012186252A5 - Surface emitting laser, array and image forming apparatus - Google Patents

Surface emitting laser, array and image forming apparatus Download PDF

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JP2012186252A5
JP2012186252A5 JP2011047232A JP2011047232A JP2012186252A5 JP 2012186252 A5 JP2012186252 A5 JP 2012186252A5 JP 2011047232 A JP2011047232 A JP 2011047232A JP 2011047232 A JP2011047232 A JP 2011047232A JP 2012186252 A5 JP2012186252 A5 JP 2012186252A5
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refractive index
layer
surface emitting
low refractive
emitting laser
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本発明は、活性層と、前記活性層に対応して配置されたフォトニック結晶層と、を有し、波長λで発振する面発光レーザであって、前記活性層と前記フォトニック結晶層の間に、隣接する層より屈折率の低い低屈折率層を有し、前記面内方向に導波する前記波長λの光に対して高次の横モードを示す高次導波モードを少なくとも１つ有し、前記高次導波モードの光強度分布のピークのうち少なくとも１つが、前記フォトニック結晶層と前記低屈折率層との間に位置していることを特徴とする。 This onset Ming, an active layer having a photonic crystal layer disposed corresponding to the active layer, a surface-emission laser you oscillation at a wavelength lambda, the photonic crystal and the active layer between the layers, higher order waveguide mode showing a high-order transverse mode with respect to light of the wavelength having the adjacent lower low refractive index layer having a refractive index than layer, guided in front Symbol plane direction λ at least one has, prior to SL at least one of the peaks of the light intensity distribution of the higher order waveguide mode, and features that you have located between the low-refractive index layer and the photonic crystal layer To do.

Claims (7)

活性層と、前記活性層に対応して配置されたフォトニック結晶層と、を有し、波長λで発振する面発光レーザであって、
前記活性層と前記フォトニック結晶層の間に、隣接する層より屈折率の低い低屈折率層を有し、
前記面内方向に導波する前記波長λの光に対して高次の横モードを示す高次導波モードを少なくとも１つ有し、
前記高次導波モードの光強度分布のピークのうち少なくとも１つが、前記フォトニック結晶層と前記低屈折率層との間に位置していることを特徴とする面発光レーザ。 An active layer having a photonic crystal layer disposed corresponding to the active layer, a surface-emission laser you oscillation at a wavelength lambda,
Between the active layer and the photonic crystal layer, a low refractive index layer having a lower refractive index than an adjacent layer,
At least one has a higher waveguide mode showing the transverse mode of high order to light of the wavelength λ to be guided before Symbol plane direction,
The higher-order waveguide mode of at least one of the peak of the light intensity distribution, the surface emitting laser characterized that you have positioned between said photonic crystal layer low refractive index layer. 前記低屈折率層を構成する材料の屈折率又は前記低屈折率層の平均屈折率が、前記フォトニック結晶層の平均屈折率より小さいことを特徴とする請求項１に記載の面発光レーザ。 The refractive index of the material constituting low refractive index layer or an average refractive index of the low refractive index layer, the surface emitting laser according to claim 1, characterized in that less than the average refractive index of the photonic crystal layer . 前記低屈折率層が、多孔質構造で構成されていることを特徴とする請求項１又は２に記載の面発光レーザ。 The low refractive index layer, the surface emitting laser according to claim 1 or 2, characterized in that it is constituted by a porous structure. 前記フォトニック結晶層が、半導体材料中に空気孔を周期配列して構成されており、
前記低屈折率層を構成する多孔質構造における空気孔の体積充填率が、前記フォトニック結晶層における空気孔の体積充填率より大きいことを特徴とする請求項３に記載の面発光レーザ。 The photonic crystal layer is configured by periodically arranging air holes in a semiconductor material,
The volume filling ratio of the air holes in the porous structure forming the low refractive index layer, the surface emitting laser according to claim 3, wherein the greater than the volume filling ratio of the air holes in the front Symbol photonic crystal layer. 前記隣接する層と前記低屈折率層は、Ａｌ、Ｇａ、Ａｓを含む半導体材料又はＡｌ、Ｇａ、Ｎを含む半導体材料で構成され、The adjacent layer and the low refractive index layer are made of a semiconductor material containing Al, Ga, As or a semiconductor material containing Al, Ga, N,
前記低屈折率層のＡｌの比率が、前記隣接する層のＡｌの比率よりも高いことを特徴とする請求項１又は２に記載の面発光レーザ。3. The surface emitting laser according to claim 1, wherein an Al ratio of the low refractive index layer is higher than an Al ratio of the adjacent layer. 請求項１乃至５のいずれか１項に記載の面発光レーザが複数配列されたアレイ。An array in which a plurality of surface emitting lasers according to any one of claims 1 to 5 are arranged. 請求項１乃至５のいずれか１項に記載の面発光レーザと、感光ドラムと、を有する画像形成装置。An image forming apparatus comprising the surface emitting laser according to claim 1 and a photosensitive drum.
JP2011047232A 2011-03-04 2011-03-04 Surface emitting laser, array and image forming apparatus Expired - Fee Related JP5836609B2 (en)

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