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    • 1. 发明授权
    • Semiconductor laser device for use in a laser module
    • 用于激光模块的半导体激光器件
    • US06947463B2
    • 2005-09-20
    • US09832885
    • 2001-04-12
    • Naoki TsukijiJunji YoshidaMasaki Funabashi
    • Naoki TsukijiJunji YoshidaMasaki Funabashi
    • H01S3/094H01S3/30H01S5/024H01S5/12H01S5/227H01S5/10
    • H01S5/227H01S3/094003H01S3/302H01S5/02415H01S5/02438H01S5/0287H01S5/1212H01S5/1215H01S5/1225
    • A semiconductor laser device, module, and method for providing light suitable for providing an excitation light source for a Raman amplifier. The semiconductor laser device includes an active layer configured to radiate light, a spacer layer in contact with the active layer and a diffraction grating formed within the spacer layer, and configured to emit a light beam having a plurality of longitudinal modes within a predetermined spectral width of an oscillation wavelength spectrum of the semiconductor device. A plurality of longitudinal modes within a predetermined spectral width of an oscillation wavelength spectrum is provided by changing a wavelength interval between the longitudinal modes and/or widening the predetermined spectral width of the oscillation wavelength spectrum. The wavelength interval is set by the length of a resonator cavity within the semiconductor laser device, while the predetermined spectral width of the oscillation wavelength spectrum is set by either shortening the diffraction grating or varying a pitch of the grating elements within the diffraction grating.
    • 一种用于提供适合于为拉曼放大器提供激发光源的光的半导体激光器件,模块和方法。 半导体激光器件包括被配置为辐射光的有源层,与有源层接触的间隔层和形成在间隔层内的衍射光栅,并且被配置为发射具有预定光谱宽度内的多个纵向模的光束 的半导体器件的振荡波长谱。 通过改变纵向模式之间的波长间隔和/或加宽振荡波长光谱的预定光谱宽度来提供振荡波长谱的预定光谱宽度内的多个纵向模式。 波长间隔由半导体激光器件内的谐振器腔的长度设定,而通过缩短衍射光栅或改变衍射光栅内的光栅元件的间距来设定振荡波长光谱的预定光谱宽度。
    • 3. 发明授权
    • Semiconductor laser device having a diffraction grating on a light emission side
    • 在发光侧具有衍射光栅的半导体激光装置
    • US06680960B2
    • 2004-01-20
    • US09983249
    • 2001-10-23
    • Junji YoshidaNaoki TsukijiMasaki Funabashi
    • Junji YoshidaNaoki TsukijiMasaki Funabashi
    • H01S500
    • H01S5/125H01S3/094003H01S3/09415H01S5/1021H01S5/1039H01S5/1096H01S5/1212H01S5/1215H01S5/1231H01S5/141H01S5/146
    • A semiconductor device and method for providing a light source suitable for use as a pumping light source in a Raman amplification system are provided. The device upon which the method is based includes an active layer configured to radiate light; a light reflecting facet positioned on a first side of the active layer; a light emitting facet positioned on a second side of the active layer thereby forming a resonant cavity between the light reflecting facet and the light emitting facet; and a partial diffraction grating having a predetermined length and positioned on a light emission side of the resonator. The predetermined length of the partial diffraction grating is selected such that the semiconductor device emits a light beam having a plurality of longitudinal modes within a predetermined spectral width of an oscillation wavelength spectrum of the semiconductor device. The predetermined length of the partial diffraction grating may be set in relation to a length of the resonant cavity, or in relation to a coupling coefficient &kgr;i of the partial diffraction grating.
    • 提供了一种用于提供适合用作拉曼放大系统中的泵浦光源的光源的半导体器件和方法。 该方法所基于的装置包括被配置为辐射光的有源层; 位于有源层的第一侧上的光反射面; 位于有源层的第二侧上的发光小面,从而在光反射小面和发光小面之间形成谐振腔; 以及具有预定长度并位于谐振器的发光侧的部分衍射光栅。 选择部分衍射光栅的预定长度,使得半导体器件发射在半导体器件的振荡波长谱的预定光谱宽度内具有多个纵向模的光束。 部分衍射光栅的预定长度可以相对于谐振腔的长度设置,或者相对于部分衍射光栅的耦合系数kappai来设定。
    • 6. 发明申请
    • SEMICONDUCTOR OPTICAL AMPLIFIER
    • 半导体光放大器
    • US20100245987A1
    • 2010-09-30
    • US12708043
    • 2010-02-18
    • Hideaki HasegawaMasaki FunabashiNoriyuki YokouchiJunji Yoshida
    • Hideaki HasegawaMasaki FunabashiNoriyuki YokouchiJunji Yoshida
    • H01S3/063H01S3/094
    • H01S5/50H01S5/028H01S5/1032H01S5/3211H01S2304/04
    • It is desirable to provide a semiconductor optical amplifier from which it becomes able to obtain a higher output power. A semiconductor optical amplifier in comprises an active wave guiding layer which comprises a passive core region that is formed of a semiconductor, and active cladding regions that are located at both sides of the passive core region and each of that is comprised of an active layer which is formed of a semiconductor and which has an index of refraction to be lower than that of the passive core region, wherein a light is wave guided with being amplified in the active wave guiding layer. Moreover, it is desirable for the active wave guiding layer to be formed of a compound semiconductor, and to be formed by integrating the passive core region and the active cladding regions to be monolithic on to a substrate that is formed of a compound semiconductor by making use of a process of a butt joint growth.
    • 期望提供一种能够获得更高输出功率的半导体光放大器。 一种半导体光放大器,包括有源波导层,该有源波导层包括由半导体形成的被动核心区域和位于被动核心区域两侧的有源包层区域,其中每一个包括有源层, 由半导体形成,其折射率低于无源芯区域的折射率,其中光在有源波导层中被放大而被波导。 此外,期望有源波导层由化合物半导体形成,并且通过将被动核区域和有源包层区域整体地组合到由化合物半导体形成的基板上而形成 使用对接联合成长过程。
    • 7. 发明授权
    • Semiconductor optical amplifier
    • 半导体光放大器
    • US08547631B2
    • 2013-10-01
    • US12708043
    • 2010-02-18
    • Hideaki HasegawaMasaki FunabashiNoriyuki YokouchiJunji Yoshida
    • Hideaki HasegawaMasaki FunabashiNoriyuki YokouchiJunji Yoshida
    • H01S5/50H01S5/20
    • H01S5/50H01S5/028H01S5/1032H01S5/3211H01S2304/04
    • It is desirable to provide a semiconductor optical amplifier from which it becomes able to obtain a higher output power. A semiconductor optical amplifier in comprises an active wave guiding layer which comprises a passive core region that is formed of a semiconductor, and active cladding regions that are located at both sides of the passive core region and each of that is comprised of an active layer which is formed of a semiconductor and which has an index of refraction to be lower than that of the passive core region, wherein a light is wave guided with being amplified in the active wave guiding layer. Moreover, it is desirable for the active wave guiding layer to be formed of a compound semiconductor, and to be formed by integrating the passive core region and the active cladding regions to be monolithic on to a substrate that is formed of a compound semiconductor by making use of a process of a butt joint growth.
    • 期望提供一种能够获得更高输出功率的半导体光放大器。 一种半导体光放大器,包括有源波导层,该有源波导层包括由半导体形成的被动核心区域和位于被动核心区域两侧的有源包层区域,其中每一个包括有源层, 由半导体形成,其折射率低于无源芯区域的折射率,其中光在有源波导层中被放大而被波导。 此外,期望有源波导层由化合物半导体形成,并且通过将被动核区域和有源包层区域整体地组合到由化合物半导体形成的基板上而形成 使用对接联合成长过程。
    • 9. 发明授权
    • Semiconductor device and optical module
    • 半导体器件和光模块
    • US08149891B2
    • 2012-04-03
    • US12620267
    • 2009-11-17
    • Masaki Funabashi
    • Masaki Funabashi
    • H01S5/00
    • H01S5/50G02B6/42G02B2006/12119G02B2006/12152H01S5/0202H01S5/10H01S5/101H01S5/1014H01S5/1085H01S5/227H01S5/4031H01S2301/176
    • A semiconductor laser element 10 according to the present invention comprises a waveguide 12 of a high mesa type. And then such the waveguide 12 comprises an oblique end face 17 as an emitting facet that is different from a cleaved end face 16. And hence it becomes possible to reduce a reflection factor at the end face by making of such the oblique end face 17, and it becomes possible to design a direction of an emitting beam 21, that is to be emitting from the oblique end face 17, to be independent of that for the cleaved end face 16 as well. Moreover, the emitting beam 21 is designed to be emitting as vertical to the cleaved end face 16. And then therefore in a case where an emitting beam from a semiconductor optical device is designed to be coupled with such as an optical fiber or another waveguide or the like, it is not necessary to device such as that the semiconductor laser element 10 is required to be arranged at a sub mount by being inclined to be oblique or the like.
    • 根据本发明的半导体激光元件10包括高台面型的波导管12。 然后,这样的波导12包括作为与切割端面16不同的发光面的倾斜端面17.因此,可以通过制造这样的倾斜端面17来降低端面处的反射系数, 并且可以将从倾斜端面17发射的发射光束21的方向设计成与切割端面16的方向无关。 此外,发射光束21被设计成垂直于切割的端面16发射。因此,在来自半导体光学器件的发射光束被设计为与诸如光纤或另一个波导耦合的情况下, 不需要将半导体激光元件10通过倾斜倾斜等设置在副安装台上的装置。