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    • 4. 发明授权
    • Semiconductor laser device
    • 半导体激光器件
    • US07510887B2
    • 2009-03-31
    • US11790532
    • 2007-04-26
    • Tsunenori AsatsumaShoji Hirata
    • Tsunenori AsatsumaShoji Hirata
    • H01L21/20
    • H01S5/223H01S5/10H01S5/105H01S5/2036H01S5/2081
    • This semiconductor laser device has the same structure as the conventional broad-area type semiconductor laser device, except that both side regions of light emission areas of active and clad layers are two-dimensional-photonic-crystallized. The two-dimensional photonic crystal formed on both side regions of the light emission area is the crystal having the property that 780 nm laser light cannot be wave-guided in a resonator direction parallel to a striped ridge within the region. The light traveling in the direction can exist only in the light emission area sandwiched between two photonic crystal regions, which results in the light laterally confined by the photonic crystal region. The optical confinement of the region suppresses the loss in the light at both edges of the stripe serving as the boundary of the optical confinement, which reduces the curve of wave surface and uniforms the light intensity distributions of NFP and FFP.
    • 该半导体激光装置具有与现有的广域型半导体激光装置相同的结构,不同之处在于有源包层和发光层的发光区域的两个侧面区域是二维光子结晶的。 形成在发光区域的两侧区域上的二维光子晶体是具有780nm激光不能在与区域内的条纹脊平行的谐振器方向上被波导的特性的晶体。 沿该方向行进的光只能存在于夹在两个光子晶体区域之间的发光区域中,这导致由光子晶体区域横向限制的光。 该区域的光学限制抑制了作为光学限制边界的条纹的两边的光的损失,这降低了波面的曲线并使NFP和FFP的光强分布均匀化。
    • 5. 发明申请
    • Semiconductor laser device
    • 半导体激光器件
    • US20080176352A1
    • 2008-07-24
    • US11790532
    • 2007-04-26
    • Tsunenori AsatsumaShoji Hirata
    • Tsunenori AsatsumaShoji Hirata
    • H01L21/02
    • H01S5/223H01S5/10H01S5/105H01S5/2036H01S5/2081
    • This semiconductor laser device has the same structure as the conventional broad-area type semiconductor laser device, except that both side regions of light emission areas of active and clad layers are two-dimensional-photonic-crystallized. The two-dimensional photonic crystal formed on both side regions of the light emission area is the crystal having the property that 780 nm laser light cannot be wave-guided in a resonator direction parallel to a striped ridge within the region. The light traveling in the direction can exist only in the light emission area sandwiched between two photonic crystal regions, which results in the light laterally confined by the photonic crystal region. The optical confinement of the region suppresses the loss in the light at both edges of the stripe serving as the boundary of the optical confinement, which reduces the curve of wave surface and uniforms the light intensity distributions of NFP and FFP.
    • 该半导体激光装置具有与现有的广域型半导体激光装置相同的结构,不同之处在于有源包层和发光层的发光区域的两个侧面区域是二维光子结晶的。 形成在发光区域的两侧区域上的二维光子晶体是具有780nm激光不能在与区域内的条纹脊平行的谐振器方向上被波导的特性的晶体。 沿该方向行进的光只能存在于夹在两个光子晶体区域之间的发光区域中,这导致由光子晶体区域横向限制的光。 该区域的光学限制抑制了作为光学限制边界的条纹的两边的光的损失,这降低了波面的曲线并使NFP和FFP的光强分布均匀化。
    • 6. 发明授权
    • Semiconductor laser device with multi-dimensional-photonic-crystallized region
    • 具有多维 - 光子结晶区域的半导体激光器件
    • US07248612B2
    • 2007-07-24
    • US10702604
    • 2003-11-07
    • Tsunenori AsatsumaShoji Hirata
    • Tsunenori AsatsumaShoji Hirata
    • H01S5/00
    • H01S5/223H01S5/10H01S5/105H01S5/2036H01S5/2081
    • This semiconductor laser device has the same structure as the conventional broad-area type semiconductor laser device, except that both side regions of light emission areas of active and clad layers are two-dimensional-photonic-crystallized. The two-dimensional photonic crystal formed on both side regions of the light emission area is the crystal having the property that 780 nm laser light cannot be wave-guided in a resonator direction parallel to a striped ridge within the region. The light traveling in the direction can exist only in the light emission area sandwiched between two photonic crystal regions, which results in the light laterally confined by the photonic crystal region. The optical confinement of the region suppresses the loss in the light at both edges of the stripe serving as the boundary of the optical confinement, which reduces the curve of wave surface and uniforms the light intensity distributions of NFP and FFP.
    • 该半导体激光装置具有与现有的广域型半导体激光装置相同的结构,不同之处在于有源包层和发光层的发光区域的两个侧面区域是二维光子结晶的。 形成在发光区域的两侧区域上的二维光子晶体是具有780nm激光不能在与区域内的条纹脊平行的谐振器方向上被波导的特性的晶体。 沿该方向行进的光只能存在于夹在两个光子晶体区域之间的发光区域中,这导致由光子晶体区域横向限制的光。 该区域的光学限制抑制了作为光学限制边界的条纹的两边的光的损失,这降低了波面的曲线并使NFP和FFP的光强分布均匀化。
    • 7. 发明授权
    • Semiconductor laser
    • 半导体激光器
    • US06741625B2
    • 2004-05-25
    • US09986182
    • 2001-11-07
    • Shoji Hirata
    • Shoji Hirata
    • H01S500
    • H01S5/4031H01S5/042
    • The present invention provides a semiconductor laser including a plurality of light emission portions provided on the same substrate, each of which is adapted to emit laser beams with a multi-mode. A part of the plurality of light emission portions constitute a main light emission group, and the rest of the plurality of light emission portions constitute a sub-light emission group. A main electrode for supplying a current to the main light emission group and a sub-electrode for supplying a current to the sub-light emission group are separately provided. With this configuration, it is possible to keep the entire quality of laser beams of the semiconductor laser constant.
    • 本发明提供一种半导体激光器,其包括设置在同一基板上的多个发光部分,每个发光部分适于发射具有多模式的激光束。 多个发光部的一部分构成主发光组,其余的发光部分构成副发光组。 分别设置用于向主发光组提供电流的主电极和用于向次发光组提供电流的子电极。 通过这种结构,可以保持半导体激光器的整个激光束的质量恒定。
    • 8. 发明授权
    • Semiconductor light emitting device
    • 半导体发光器件
    • US06414976B1
    • 2002-07-02
    • US09350292
    • 1999-07-09
    • Shoji Hirata
    • Shoji Hirata
    • H01S500
    • B82Y20/00H01S5/0658H01S5/1014H01S5/1064H01S5/223H01S5/2231H01S5/3421H01S2301/18
    • A semiconductor light emitting device capable of correcting astigmatism difference well and oscillating stably also at the time of a high output operation, wherein a waveguide stripe width at the center of a stripe portion is constant, an inter-ridge recessed portion width (ridge separation width) is set narrow at the center portion of the stripe portion (resonator center portion), and a ridge separation width near an end surface side is set broader than the ridge separation width at the center portion, whereby a waveguide mode of the stripe center portion is laterally spread and in addition the current can be held in the narrow region and, accordingly, a saturable absorbing region is formed in the lateral region inside an active layer, pulsation can be stably induced, and an effective refractive index difference An near the end surface is made large and an index guide-like waveguide can be obtained, whereby astigmatism difference can be reduced to close to zero.
    • 一种半导体发光器件,其能够在高输出操作时能够良好地校正散光差异并稳定地振荡,其中条形部分的中心处的波导条宽度恒定,脊间凹部的宽度(脊间隔宽度 )在条状部分(谐振器中心部分)的中心部分设置得较窄,并且端面侧附近的脊分离宽度被设定为比中心部分处的脊分离宽度宽,由此条纹中心部分的波导模式 横向扩展,另外电流可以保持在窄的区域内,因此在有源层内部的横向区域中形成可饱和的吸收区域,可以稳定地产生脉动,在端部附近有效的折射率差A 使表面变大,并且可以获得折射率导向波导,从而可以将像散差降低到接近于零。