Extended wavelength strained layer lasers having nitrogen disposed therein
    15.
    发明授权
    Extended wavelength strained layer lasers having nitrogen disposed therein 有权
    具有氮的扩展波长应变层激光器设置在其中

    公开(公告)号:US07627014B2

    公开(公告)日:2009-12-01

    申请号:US11090260

    申请日:2005-03-28

    IPC分类号: H01S5/00

    摘要: Several methods are used in novel ways with newly identified and viable parameters to decrease the peak transition energies of the pseudomorphic InGaAs/GaAs heterostructures. These techniques, taken separately or in combination, suffice to permit operation of light emitting devices at wavelengths of 1.3 μm or greater of light-emitting electro-optic devices. These methods or techniques, by example, include: (1) utilizing new superlattice structures having high In concentrations in the active region, (2) utilizing strain compensation to increase the usable layer thickness for quantum wells with appropriately high In concentrations, (3) utilizing appropriately small amounts of nitrogen (N) in the pseudomorphic InGaAsN/GaAs laser structure, and (4) use of nominal (111) oriented substrates to increase the usable layer thickness for quantum wells with appropriately high In concentrations. In all of the above techniques, gain offset may be utilized in VCSELs to detune the emission energy lower than the peak transition energy, by about 25 meV or even more, via appropriate DBR spacing. Gain offset may also be utilized in some forms of in-plane lasers. Increased temperature may also be used to decrease peak transition energy (and therefore the emission energy) by about 50 meV/100° C. All these techniques are furthermore applicable to other material systems, for example, extending the emission wavelength for laser diodes grown on InP substrates. Additionally, structures which utilize the above techniques are discussed.

    摘要翻译: 以新颖的方式使用几种方法,用新的识别和可行的参数来降低伪晶InGaAs / GaAs异质结构的峰跃迁能。 单独或组合使用的这些技术足以允许在发光电光器件的1.3μm或更大的波长处操作发光器件。 这些方法或技术例如包括:(1)利用在有源区域中具有高In浓度的新超晶格结构,(2)利用应变补偿增加适当高浓度的量子阱的可用层厚度,(3) 在伪晶InGaAsN / GaAs激光器结构中适当地使用少量的氮(N),以及(4)使用标称(111)取向的衬底,以增加适当高的In浓度的量子阱的可用层厚度。 在所有上述技术中,增益偏移可以用于VCSEL中,以通过适当的DBR间隔将低于峰值跃迁能量的发射能量去除约25meV或甚至更多。 在某些形式的平面内激光器中也可以使用增益偏移。 也可以使用增加的温度来将峰值转变能量(因此发射能量)降低约50meV / 100℃。所有这些技术还可应用于其它材料系统,例如,扩展生长在激光二极管上的激光二极管的发射波长 InP衬底。 另外,讨论了利用上述技术的结构。

    Optical waveguide multimode to single mode transformer
    16.
    发明授权
    Optical waveguide multimode to single mode transformer 失效
    光波导多模到单模变压器

    公开(公告)号:US06580850B1

    公开(公告)日:2003-06-17

    申请号:US09722100

    申请日:2000-11-24

    IPC分类号: G02B626

    摘要: An optical waveguide mode transformer has a substrate supporting a high refractive index core layer surrounded by lower refractive index cladding. The core layer includes a wide input waveguide section to accept a multimode, including a fundamental mode, light input. The input waveguide section is coupled to a narrow output waveguide section by a tapered region having a taper length enabling adiabatic transfer of the fundamental mode of the multimode light from the wide input waveguide section to the output waveguide section while suppressing(stripping) other modes of the multimode light input. The narrow output waveguide section supports a single mode light output comprising said fundamental mode. The core layer is contoured to include a localized upstanding ridge intermediate opposite lateral sides of the core layer. The output waveguide section includes a portion having a real index step between the core layer and cladding layers, and advantageously is functional to output a light beam having similar vertical and horizontal divergences.

    摘要翻译: 光波导模式变压器具有支撑由折射率较低的包层围绕的高折射率芯层的衬底。 芯层包括宽输入波导部分,以接受多模,包括基本模式,光输入。 输入波导部分通过锥形区域耦合到窄输出波导部分,该锥形区域具有能够将多模光的基模从宽输入波导部分绝对转移到输出波导部分,同时抑制(剥离)其它模式 多模光输入。 窄输出波导部分支持包括所述基模的单模光输出。 核心层的轮廓是包括位于芯层的相对侧面的局部直立脊。 输出波导部分包括在芯层和包覆层之间具有实际折射率台阶的部分,并且有利地用于输出具有相似的垂直和水平分歧的光束。

    Optical waveguide slab structures
    17.
    发明授权
    Optical waveguide slab structures 失效
    光波导板结构

    公开(公告)号:US06434303B1

    公开(公告)日:2002-08-13

    申请号:US09616816

    申请日:2000-07-14

    IPC分类号: G02B642

    摘要: An optical waveguide device comprising a free space region, suitably provided by a slab waveguide, having optical signal ports for coupling to input and output waveguide sections and an optical waveguide grating including an array of grating waveguides coupling the free space region to a reflector surface to provide a folded structure. Dielectric waveguide structures are preferred. The grating includes tapered optical waveguide sections laterally spaced and optically isolated from each other which extend from the free space region, with the grating waveguides continuing as extensions of the tapered waveguide sections. Each of the grating waveguides differs in length from a neighboring grating waveguide by a constant increment, preferably an optical path length increment. The grating waveguides also include intermediate curved portions having respective curvatures which increase progressively, preferably in an approximately parabolic manner, according to the sequential location of the grating waveguides from a reference grating waveguide in the array.

    摘要翻译: 一种光波导装置,包括由平板波导适当地提供的自由空间区域,其具有用于耦合到输入和输出波导部分的光信号端口和包括将自由空间区域耦合到反射器表面的光栅波导阵列的光波导光栅, 提供折叠结构。 电介质波导结构是优选的。 光栅包括从自由空间区域延伸的彼此侧向间隔开和光学隔离的锥形光波导部分,光栅波导连续作为锥形波导部分的延伸。 每个光栅波导的长度与相邻的光栅波导的长度不同,最好是光程长度增量。 光栅波导还包括具有相应曲率的中间弯曲部分,其根据阵列中的参考光栅波导的光栅波导的顺序位置逐渐增加,优选地以大致抛物线方式增加。

    Extended wavelength strained layer lasers having strain compensated layers
    18.
    发明授权
    Extended wavelength strained layer lasers having strain compensated layers 失效
    具有应变补偿层的扩展波长应变层激光器

    公开(公告)号:US06359920B1

    公开(公告)日:2002-03-19

    申请号:US09320945

    申请日:1999-05-26

    IPC分类号: H01S5343

    摘要: Several methods are used in novel ways with newly identified and viable parameters to decrease the peak transition energies of the pseudomorphic InGaAs/GaAs heterostructures. These techniques, taken separately or in combination, suffice to permit operation of light emitting devices at wavelengths of 1.3 &mgr;m or greater of light-emitting electro-optic devices. These methods or techniques, by example, include: (1) utilizing new superlattice structures having high In concentrations in the active region, (2) utilizing strain compensation to increase the usable layer thickness for quantum wells with appropriately high In concentrations, (3) utilizing appropriately small amounts of nitrogen (N) in the pseudomorphic InGaAsN/GaAs laser structure, and (4) use of nominal (111) oriented substrates to increase the usable layer thickness for quantum wells with appropriately high In concentrations. In all of the above techniques, gain offset may be utilized in VCSELs to detune the emission energy lower than the peak transition energy, by about 25 meV or even more, via appropriate DBR spacing. Gain offset may also be utilized in some forms of in-plane lasers. Increased temperature may also be used to decrease peak transition energy (and therefore the emission energy) by about 50 meV/100° C. All these techniques are furthermore applicable to other material systems, for example, extending the emission wavelength for laser diodes grown on InP substrates. Additionally, structures which utilize the above techniques are discussed.

    摘要翻译: 以新颖的方式使用几种方法,用新的识别和可行的参数来降低伪晶InGaAs / GaAs异质结构的峰跃迁能。 单独或组合使用的这些技术足以允许在发光电光器件的1.3μm或更大的波长处操作发光器件。 这些方法或技术例如包括:(1)利用在有源区域中具有高In浓度的新超晶格结构,(2)利用应变补偿增加适当高浓度的量子阱的可用层厚度,(3) 在伪晶InGaAsN / GaAs激光器结构中适当地使用少量的氮(N),以及(4)使用标称(111)取向的衬底,以增加适当高的In浓度的量子阱的可用层厚度。 在所有上述技术中,增益偏移可以用于VCSEL中,以通过适当的DBR间隔将低于峰值跃迁能量的发射能量去除约25meV或甚至更多。 在某些形式的平面内激光器中也可以使用增益偏移。 也可以使用增加的温度来将峰值转变能量(因此发射能量)降低约50meV / 100℃。所有这些技术还可应用于其它材料系统,例如,扩展生长在激光二极管上的激光二极管的发射波长 InP衬底。 另外,讨论了利用上述技术的结构。

    Extended wavelength strained layer lasers having strain compensated
layers
    19.
    发明授权
    Extended wavelength strained layer lasers having strain compensated layers 失效
    具有应变补偿层的扩展波长应变层激光器

    公开(公告)号:US5825796A

    公开(公告)日:1998-10-20

    申请号:US721589

    申请日:1996-09-25

    摘要: Several methods are used in novel ways with newly identified and viable parameters to decrease the peak transition energies of the pseudomorphic InGaAs/GaAs heterostructures. These techniques, taken separately or in combination, suffice to permit operation of light emitting devices at wavelengths of 1.3 .mu.m or greater of light-emitting electro-optic devices. These methods or techniques, by example, include: (1) utilizing new superlattice structures having high In concentrations in the active region, (2) utilizing strain compensation to increase the usable layer thickness for quantum wells with appropriately high In concentrations, (3) utilizing appropriately small amounts of nitrogen (N) in the pseudomorphic InGaAsN/GaAs laser structure, and (4) use of nominal (111) oriented substrates to increase the usable layer thickness for quantum wells with appropriately high In concentrations. In all of the above techniques, gain offset may be utilized in VCSELs to detune the emission energy lower than the peak transition energy, by about 25 meV or even more, via appropriate DBR spacing. Gain offset may also be utilized in some forms of in-plane lasers. Increased temperature may also be used to decrease peak transition energy (and therefore the emission energy) by about 50 meV/100.degree. C. All these techniques are furthermore applicable to other material systems, for example, extending the emission wavelength for laser diodes grown on InP substrates. Additionally, structures which utilize the above techniques are discussed.

    摘要翻译: 以新颖的方式使用几种方法,用新的识别和可行的参数来降低伪晶InGaAs / GaAs异质结构的峰跃迁能。 单独或组合使用的这些技术足以允许在发光电光器件的1.3μm或更大的波长处操作发光器件。 这些方法或技术例如包括:(1)利用在有源区域中具有高In浓度的新超晶格结构,(2)利用应变补偿增加适当高浓度的量子阱的可用层厚度,(3) 在伪晶InGaAsN / GaAs激光器结构中适当地使用少量的氮(N),以及(4)使用标称(111)取向的衬底,以增加适当高的In浓度的量子阱的可用层厚度。 在所有上述技术中,增益偏移可以用于VCSEL中,以通过适当的DBR间隔将低于峰值跃迁能量的发射能量去除约25meV或甚至更多。 在某些形式的平面内激光器中也可以使用增益偏移。 也可以使用增加的温度来将峰值转变能量(因此发射能量)降低约50meV / 100℃。所有这些技术还可应用于其他材料系统,例如,扩展生长在激光二极管上的激光二极管的发射波长 InP衬底。 另外,讨论了利用上述技术的结构。

    Device fabrication
    20.
    发明授权
    Device fabrication 失效
    器件制造

    公开(公告)号:US5288657A

    公开(公告)日:1994-02-22

    申请号:US608093

    申请日:1990-11-01

    摘要: Expedient fabrication of fine-featured integrated circuits entails aperture pattern delineation to produce a masking layer atop a semiconductor body followed by insertion within a controlled atmosphere chamber within which device-functional layered material is epitaxially grown within apertures. Critical, device-consequential properties of epitaxial material is assured by removal of a thin surface layer of material revealed during delineation. Such removal, sufficient to eliminate meaningful contamination and/or crystalline damage introduced during delineation, is of sufficiently small quantity as to be accommodated within the chamber. Under most circumstances, the controlled atmosphere is at reduced pressure as required for e.g. MOMBE epitaxial growth.

    摘要翻译: 精细特征集成电路的有利制造需要孔径图案描绘,以在半导体主体顶部产生掩蔽层,然后插入受控气氛室内,其中器件功能分层材料在孔内外延生长。 通过去除在描绘过程中显露的材料的薄表面层来确保外延材料的关键的器件结果性质。 足以消除在描绘期间引入的有意义的污染和/或结晶损伤的这种去除足够小以容纳在室内。 在大多数情况下,受控气氛处于如下所需的减压下。 MOMBE外延生长。