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    • 23. 发明专利
    • Surface-emitting semiconductor laser
    • 表面发射半导体激光器
    • JP2010050412A
    • 2010-03-04
    • JP2008215775
    • 2008-08-25
    • Sony Corpソニー株式会社
    • MASUI TAKESHIARAKIDA TAKAHIROKODA RINTAROMAEDA OSAMUOKI TOMOYUKISHIROKISHI NAOTERU
    • H01S5/183
    • H01S5/18336H01S5/0655H01S5/18311H01S5/18316H01S5/18358H01S2301/166
    • PROBLEM TO BE SOLVED: To provide a surface-emitting semiconductor laser that can make high output in a fundamental transverse mode while preventing oscillation in a high-order transverse mode.
      SOLUTION: In the surface-emitting semiconductor laser, a transverse mode adjusting layer 20 is provided on a side of a substrate 10, that is, on a side opposite to a side where the laser is emitted. In the transverse mode adjusting layer 20, a reflectivity in an oscillating wavelength λ on a region opposite to a center region of a light-emitting region 13A is higher than that in the oscillating wavelength λ on a region opposite to an outer peripheral region of the light-emitting region 13A. Accordingly, light output in the fundamental transverse mode is not likely to be prevented by the transverse mode adjusting layer 20, thereby highly maintaining slope efficiency of the fundamental transverse mode.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种能够在高横向模式下防止振荡的情况下能够实现基本横向模式的高输出的表面发射半导体激光器。 解决方案:在表面发射半导体激光器中,横向模式调节层20设置在基板10的一侧,即在与激光发射侧相反的一侧。 在横模式调整层20中,在与发光区域13A的中心区域相反的区域上的振荡波长λ的反射率高于在与发光区域13A的外周区域相反的区域的振荡波长λ的反射率 发光区域13A。 因此,横向模式调节层20不可能防止基本横模的光输出,从而高度保持基本横模的斜率效率。 版权所有(C)2010,JPO&INPIT
    • 24. 发明专利
    • Semiconductor light emitting element
    • 半导体发光元件
    • JP2009076640A
    • 2009-04-09
    • JP2007243752
    • 2007-09-20
    • Fujifilm Corp富士フイルム株式会社
    • OSATO TAKESHI
    • H01S5/16
    • H01S5/32B82Y20/00H01L33/0045H01S5/0655H01S5/1082H01S5/3213H01S5/34306H01S2301/18
    • PROBLEM TO BE SOLVED: To obtain a semiconductor light emitting element which can perform high output operation with a high reliability and a good reproducibility.
      SOLUTION: The semiconductor light emitting element of edge emission type includes a substrate 1, a first conductivity cladding layer 2 laminated on the substrate 1, an active region layer 15 including an active layer 5 laminated on the first conductivity cladding layer 2, a second conductivity cladding layer 7 laminated on the active region layer 15 on its light emission region so that the thickness of a region of at least the active region layer 15 in the vicinity of the light emission edge is smaller than the thickness of the other region, and a second conductivity re-growth layer 9 which is laminated on the second conductivity cladding layer 7 or on the active region layer having the second conductivity cladding layer 7 not laminated thereon and which has a refractive index higher than that of the second conductivity cladding layer 7.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:获得可以以高可靠性和良好再现性执行高输出操作的半导体发光元件。 < P>解决方案:边缘发射型半导体发光元件包括基板1,层叠在基板1上的第一导电率包层2,层叠在第一导电性覆层2上的有源层5的有源区域15, 在其发光区域层叠在有源区域层15上的第二导电性覆层7,使得至少有源区域层15的发光边缘附近的区域的厚度小于其他区域的厚度 以及第二导电性再生长层9,其层叠在第二导电性包层7上或者在其上没有层叠有第二导电性包层7的有源区层上,折射率高于第二导电率包层 版权所有(C)2009,JPO&INPIT
    • 25. 发明专利
    • Quantum cascade laser device
    • 量子CASCADE激光器件
    • JP2009054637A
    • 2009-03-12
    • JP2007217395
    • 2007-08-23
    • Hamamatsu Photonics Kk浜松ホトニクス株式会社
    • SUGIYAMA ATSUSHIOCHIAI TAKAHIDEFUJITA KAZUMASAAKIKUSA NAOHIROEDAMURA TADATAKAFURUTA SHINICHI
    • H01S5/12H01S5/227H01S5/343
    • H01S5/12B82Y20/00H01S3/08031H01S5/0655H01S5/2272H01S5/3412H01S5/34366
    • PROBLEM TO BE SOLVED: To provide a DFB-type quantum cascade laser device capable of surely carrying out CW oscillation of single-mode light even at room temperature or at a temperature near it.
      SOLUTION: In this quantum cascade laser device 1, because a top grating system with a diffraction grating 7 formed on a laminate 3 is adopted, the degradation of the temperature characteristic as a laser device or the deterioration of yield and reproducibility is suppressed as compared to an embedded grating system. Moreover, because the thickness of a clad layer 5 located between an active layer 4 and the diffraction grating 7 is in the range of 42±10% of the oscillating wavelength, it becomes possible to prevent that the seepage of light from the active layer 4 to the diffraction grating 7 becomes weak, or the leakage of light becomes large. Therefore, according to this quantum cascade laser device 1, the CW oscillation of single-mode light can be carried out even at room temperature or at a temperature near it.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供即使在室温或接近温度的情况下也能够可靠地执行单模光的CW振荡的DFB型量子级联激光装置。 解决方案:在该量子级联激光装置1中,由于采用在层叠体3上形成的具有衍射光栅7的顶部光栅系统,因此抑制了作为激光装置的温度特性的劣化或成品率和再现性的劣化被抑制 与嵌入式光栅系统相比。 此外,由于位于有源层4和衍射光栅7之间的包覆层5的厚度在振荡波长的42±10%的范围内,因此可以防止来自有源层4的光的渗漏 到衍射光栅7变弱,或者光的泄漏变大。 因此,根据该量子级联激光装置1,即使在室温或其附近的温度下也可以进行单模光的CW振荡。 版权所有(C)2009,JPO&INPIT
    • 26. 发明专利
    • Surface-emitting laser
    • 表面发射激光
    • JP2009038062A
    • 2009-02-19
    • JP2007198485
    • 2007-07-31
    • Canon Incキヤノン株式会社
    • IKUTA MITSUHIRO
    • H01S5/187
    • B82Y20/00H01S5/0655H01S5/105H01S5/18311H01S5/18358H01S5/18372H01S5/2086H01S5/34326
    • PROBLEM TO BE SOLVED: To provide a surface-emitting laser capable of reducing effects on reflectance of an upper reflection mirror and obtaining high output in a single transverse mode.
      SOLUTION: The surface-emitting laser includes a plurality of semiconductor layers, laminated on a substrate, which includes a lower semiconductor multilayer reflection mirror, an active layer, and an upper semiconductor multilayer reflection mirror, wherein the lower or upper semiconductor multilayer reflection mirror includes a first semiconductor layer having a two-dimensional photonic crystal structure comprised of a high and low refractive index portions which are arranged in a direction parallel to the substrate, and wherein a second semiconductor layer laminated on the first semiconductor layer includes a microhole which reaches the low refractive index portion, the cross section of the microhole in the direction parallel to the substrate being smaller than the cross section of the low refractive index portion formed in the first semiconductor layer.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供能够降低对上反射镜的反射率的影响并在单横模中获得高输出的表面发射激光器。 解决方案:表面发射激光器包括层叠在基板上的多个半导体层,其包括下半导体多层反射镜,有源层和上半导体多层反射镜,其中下或上半导体多层反射镜 反射镜包括具有二维光子晶体结构的第一半导体层,所述二维光子晶体结构由沿着与所述衬底平行的方向排列的高折射率部分和低折射率部分组成,并且其中层叠在所述第一半导体层上的第二半导体层包括微孔 其到达低折射率部分时,微孔在与基板平行的方向上的横截面小于形成在第一半导体层中的低折射率部分的横截面。 版权所有(C)2009,JPO&INPIT