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    • 11. 发明申请
    • SEMICONDUCTOR LASER DEVICE
    • 半导体激光器件
    • US20110002351A1
    • 2011-01-06
    • US12616816
    • 2009-11-12
    • Kimio Shigihara
    • Kimio Shigihara
    • H01S5/00
    • H01S5/2004H01S5/2063H01S5/22H01S5/3211
    • A semiconductor laser device includes: a p-type cladding layer; a p-type cladding layer guide layer; an active layer; an n-type cladding layer guide layer; and an n-type cladding layer, in which each of the p-type and n-type cladding layer guide layers is undoped or close to undoped, the sum of the thickness of the p-type cladding layer guide layer and the thickness of the n-type cladding layer guide layer is at least 200 nm, and both of (i) the difference between the band gap energy of the p-type cladding layer guide layer and the band gap energy of the active layer, and (ii) the difference between the band gap energy of the n-type cladding layer guide layer and the band gap energy of the active layer do not exceed 0.3 eV.
    • 半导体激光器件包括:p型覆层; p型包覆层引导层; 活性层 n型包覆层引导层; 以及n型包覆层,其中p型和n型包覆层导向层中的每一个未掺杂或接近未掺杂,p型包覆层引导层的厚度和 n型包覆层引导层为至少200nm,(i)p型包覆层导向层的带隙能量与有源层的带隙能量之间的差异,以及(ii) n型包层导向层的带隙能量与有源层的带隙能量之间的差不超过0.3eV。
    • 13. 发明申请
    • SEMICONDUCTOR LASER DEVICE
    • 半导体激光器件
    • US20100118904A1
    • 2010-05-13
    • US12407822
    • 2009-03-20
    • Kimio Shigihara
    • Kimio Shigihara
    • H01S5/00
    • H01S5/20B82Y20/00H01S5/1053H01S5/2004H01S5/343H01S5/3436H01S2301/18
    • A semiconductor laser device includes: an n-type cladding layer; a p-type cladding layer; and an optical waveguide portion disposed between the n-type and p-type cladding layers and including spaced-apart active layers. The optical waveguide portion permits lasing in a crystal growth direction of the active layers in at least three modes, including the fundamental mode and two higher order modes. The number of active layers is equal to or greater than the number of extreme points of the electric field of a particular one of the higher order modes. At least one of the active layers is disposed near extreme point of the electric field of the particular higher order mode, within the optical waveguide portion.
    • 半导体激光装置包括:n型包层; p型覆层; 以及设置在n型和p型包覆层之间并且包括间隔开的有源层的光波导部分。 光波导部分允许至少三种模式在有源层的晶体生长方向上发光,包括基模和两高阶模。 有源层的数量等于或大于特定一个较高阶模式的电场的极值点的数量。 在光波导部分内,有源层中的至少一个设置在特定高阶模式的电场的极点附近。
    • 16. 发明授权
    • Semiconductor laser device
    • 半导体激光器件
    • US07129512B2
    • 2006-10-31
    • US10961233
    • 2004-10-12
    • Kimio Shigihara
    • Kimio Shigihara
    • H01L29/06
    • H01S5/02461H01S5/0224H01S5/20H01S5/2004H01S5/2036H01S5/2063H01S5/2231H01S5/3213H01S2301/18
    • The present invention provides a semiconductor laser device including a heat sink having one main surface, an n-AlGaAs cladding layer disposed on the main surface of the heat sink, an AlGaAs active layer disposed on the n-AlGaAs cladding layer and a p-AlGaAs cladding layer disposed on the AlGaAs active layer. An effective refractive index and a thermal resistance between a main surface on the heat sink side, of the AlGaAs active layer and a main surface on the heat sink side, of the n-AlGaAs cladding layer are respectively set smaller than those between a main surface on the side opposite to the heat sink, of the AlGaAs active layer and a main surface on the side opposite to the heat sink, of the p-AlGaAs cladding layer.
    • 本发明提供一种半导体激光装置,其具备:具有一个主表面的散热器,设置在散热片主表面上的n-AlGaAs覆层,设置在n-AlGaAs覆层上的AlGaAs有源层和p-AlGaAs 包层设置在AlGaAs活性层上。 n AlGaAs覆层的AlGaAs活性层和散热体侧的主表面的散热器侧的主面之间的有效折射率和热电阻分别设定为小于主面 在AlGaAs活性层的相反一侧和与散热器相反的一侧的主表面上的p-AlGaAs覆层。
    • 18. 发明授权
    • Semiconductor optical device
    • 半导体光学器件
    • US06970633B2
    • 2005-11-29
    • US10668185
    • 2003-09-24
    • Kimio ShigiharaKazushige Kawasaki
    • Kimio ShigiharaKazushige Kawasaki
    • H01S3/08G02B5/08G02B6/42H01S5/028H01S5/183G02B6/10H01L29/04H01L29/205H01S5/00B22B7/02
    • H01S5/0287G02B5/0816G02B6/4207Y10T428/2495
    • A semiconductor optical device includes a waveguide layer and a reflecting multi-layer film. The waveguide layer includes two cladding layers and an active layer sandwiched between the two cladding layers. The reflecting multi-layer film including multiple layers is on at least one of a pair of opposing end faces of the waveguide layer. A summation Σnidi of products nidi of refractive indexes ni and thicknesses di of the layers denoted i in the reflecting multi-layer film, and a wavelength λ0 of light guided through the waveguide layer satisfies a relationship, Σnidi>λ0/4. A first wavelength bandwidth Δλ is wider than a second wavelength bandwidth ΔΛ. Δλ is a wavelength range including the wavelength λ0 in which a reflectance R of the reflecting multi-layer film is not higher than +2.0% from reflectance R at the wavelength λ0. ΔΛ is a wavelength range including the wavelength λ0 in which a reflectance R′ of a hypothetical layer is not higher than +2.0% from a hypothetical reflectance R′ at the wavelength λ0 of a hypothetical layer having a thickness of 5λ0/(4nf), a refractive index nf, on the at least one of opposing end faces, and satisfying a relationship, R′=((nc−nf2)/(nc+nf2))2, where nc denotes an effective refractive index of the waveguide layer.
    • 半导体光学器件包括波导层和反射多层膜。 波导层包括两个包覆层和夹在两个覆层之间的有源层。 包括多层的反射多层膜在波导层的一对相对的端面中的至少一个上。 折射率n i i i i i i i的乘积的总和i i / 并且在反射多层膜中表示为i的层的厚度d 1和厚度d 1,并且通过波导层引导的光的波长λ0 <0>满足关系,Sigman 4/1/2。 第一波长带宽Deltalambda比第二波长带宽DeltaLambda宽。 Deltalλ是包括波长λ<0>的波长范围,其中反射多层膜的反射率R不比波长λ<0的反射率R + + 2.0% >。 DeltaLambda是包括波长λ<0> 0的波长范围,其中假设层的反射率R'与波长λ0的假想反射率R'不高于+ 2.0% 具有厚度为5μm/(4n×f))的假想层的折射率n 在该至少一个 的相对端面,并且满足关系,R'=((n> c n) 其中,n C表示有效折射率,其中n≥2 波导层。