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    PHOTONIC BANDGAP FIBER AND FIBER LASER DEVICE USING SAME
    73.
    发明申请
    PHOTONIC BANDGAP FIBER AND FIBER LASER DEVICE USING SAME 有权
    光子束带光纤和光纤激光器件

    公开(公告)号：US20160006205A1

    公开(公告)日：2016-01-07

    申请号：US14851632

    申请日：2015-09-11

    Applicant: FUJIKURA LTD. ,  NATIONAL UNIVERSITY CORP. HOKKAIDO UNIVERSITY

    Inventor： Masahiro Kashiwagi ,  Kunimasa Saitoh

    IPC: H01S3/067 ,  H01S3/094 ,  G02B6/02 ,  H01S3/0941

    CPC classification number: H01S3/06741 ,  G02B6/02309 ,  G02B6/02323 ,  G02B6/02347 ,  H01S3/0675 ,  H01S3/094003 ,  H01S3/09408 ,  H01S3/0941

    Abstract: There is provided a photonic bandgap fiber used in a state in which at least a part of the photonic bandgap fiber is bent at radii of 15 cm or greater and 25 cm or less. A large number of high refractive index portions 57 are disposed in a nineteen-cell core type in three layers, and a V value is 1.5 or greater and 1.63 or less. In the high refractive index portions 57, conditions are defined that a relative refractive index difference is Δ% and a lattice constant is Λ μm so as to remove light in a higher mode at the bent portion as described above.

    Abstract translation: 提供了一种光子带隙光纤，其中至少一部分光子带隙光纤在15cm或更大且25cm或更小的半径处弯曲的状态。 大量的高折射率部分57以三层布置在十九核心型中，V值为1.5以上至1.63以下。 在高折射率部分57中，条件被定义为相对折射率差为＆Dgr;％，晶格常数为Λμm，以便如上所述在弯曲部分移除较高模式的光。

    Laser design
    75.
    发明授权
    Laser design 有权
    激光设计

    公开(公告)号：US09178329B2

    公开(公告)日：2015-11-03

    申请号：US13470081

    申请日：2012-05-11

    Applicant: Barry A. Wechsler ,  Michael P. Scripsick ,  David S. Sumida ,  Thomas G. Crow

    Inventor： Barry A. Wechsler ,  Michael P. Scripsick ,  David S. Sumida ,  Thomas G. Crow

    IPC: H01S3/04 ,  H01S3/06 ,  C30B19/12 ,  C30B29/32 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/16

    CPC classification number: H01S3/0602 ,  C30B19/12 ,  C30B29/32 ,  H01S3/0408 ,  H01S3/0604 ,  H01S3/0612 ,  H01S3/09408 ,  H01S3/094084 ,  H01S3/0941 ,  H01S3/1618 ,  H01S3/1675

    Abstract: A laser gain element including an undoped layer of a monoclinic double tungstate (MDT) crystal, and a method of forming a laser gain element are provided. The laser gain element includes a layer of doped MDT crystal adjacent to the undoped layer, the doped MDT layer including a pre-selected concentration of rare earth ions. The layer of doped MDT crystal has an absorption peak at a first wavelength and an emission peak at a second wavelength longer than the first wavelength; and the layer of doped MDT crystal has a fluorescence emission with a weighted average at a third wavelength shorter than the first wavelength. A laser resonator cavity formed with a plurality of composite gain elements as above is also provided.

    Abstract translation: 提供了包括单斜晶双晶钨酸盐（MDT）晶体的未掺杂层的激光增益元件以及形成激光增益元件的方法。 激光增益元件包括与未掺杂层相邻的掺杂MDT晶体层，掺杂的MDT层包括预先选择的稀土离子浓度。 掺杂的MDT晶体层在第一波长处具有吸收峰，并且在比第一波长长的第二波长处具有发射峰; 并且掺杂的MDT晶体层具有在比第一波长短的第三波长处的加权平均的荧光发射。 还提供了如上所述形成有多个复合增益元件的激光谐振腔。

    COMPACT ULTRA-SHORT PULSE SOURCE AMPLIFIERS
    76.
    发明申请
    COMPACT ULTRA-SHORT PULSE SOURCE AMPLIFIERS 审中-公开
    紧凑型超短脉冲源放大器

    公开(公告)号：US20150311666A1

    公开(公告)日：2015-10-29

    申请号：US14571367

    申请日：2013-10-16

    Applicant: IMRA AMERICA, INC.

    Inventor： Martin E. FERMANN

    IPC: H01S3/11 ,  H01J49/16 ,  H01S3/067

    CPC classification number: H01S3/1106 ,  B23K26/0624 ,  H01J49/161 ,  H01S3/0057 ,  H01S3/06708 ,  H01S3/06741 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094026 ,  H01S3/094042 ,  H01S3/094061 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/1115

    Abstract: The present invention relates to compact, low noise, ultra-short pulse sources based on fiber amplifiers, and various applications thereof. At least one implementation includes an optical amplification system having a fiber laser seed source producing seed pulses at a repetition rate corresponding to the fiber laser cavity round trip time. A nonlinear pulse transformer, comprising a fiber length greater than about 10 m, receives a seed pulse at its input and produces a spectrally broadened output pulse at its output, the output pulse having a spectral bandwidth which is more than 1.5 times a spectral bandwidth of a seed pulse. A fiber power amplifier receives and amplifies spectrally broadened output pulses. A pulse compressor is configured to temporally compress spectrally broadened pulses amplified by said power amplifier. Applications include micro-machining, ophthalmology, molecular desorption or ionization, mass-spectroscopy, and/or laser-based, biological tissue processing.

    Abstract translation: 本发明涉及基于光纤放大器的紧凑，低噪声，超短脉冲源及其各种应用。 至少一个实施方案包括具有光纤激光种子源的光放大系统，其以对应于光纤激光腔往返时间的重复频率产生种子脉冲。 包括光纤长度大于约10微米的非线性脉冲变压器在其输入处接收种子脉冲，并在其输出端产生光谱扩展的输出脉冲，其输出脉冲的光谱带宽大于光谱带宽的1.5倍 种子脉冲。 光纤功率放大器接收并放大光谱扩展的输出脉冲。 脉冲压缩器被配置为在时间上压缩由所述功率放大器放大的频谱变宽的脉冲。 应用包括微加工，眼科学，分子解吸或离子化，质谱法和/或基于激光的生物组织处理。

    METHOD AND APPARATUS FOR FORMING FINE SCALE STRUCTURES IN DIELECTRIC SUBSTRATE
    78.
    发明申请
    METHOD AND APPARATUS FOR FORMING FINE SCALE STRUCTURES IN DIELECTRIC SUBSTRATE 有权
    在电介质基板上形成微细结构的方法和装置

    公开(公告)号：US20150230341A1

    公开(公告)日：2015-08-13

    申请号：US14373798

    申请日：2013-04-19

    Applicant: M-SOLV LIMITED

    Inventor： David Charles Milne ,  Philip Thomas Rumsby ,  David Thomas Edmund Myles

    IPC: H05K3/00 ,  H01S3/00 ,  B23K26/06 ,  H05K3/46 ,  B23K26/073 ,  H01S3/0941 ,  H01S3/11

    CPC classification number: H01S3/11 ,  B23K26/0648 ,  B23K26/066 ,  B23K26/0661 ,  B23K26/073 ,  B23K26/082 ,  B23K26/0821 ,  B23K26/361 ,  B23K26/362 ,  B23K26/402 ,  B23K2103/50 ,  H01S3/0057 ,  H01S3/0071 ,  H01S3/0941 ,  H05K3/0035 ,  H05K3/0073 ,  H05K2203/0557

    Abstract: Apparatus and methods for forming fine scale structures (4, 4′, 4″, 5, 6, 7, 8) in the surface of a dielectric substrate (3) to two or more depths are disclosed. In an example, the apparatus 25 comprises a first solid state laser (12) arranged to provide a first pulsed laser beam (13), a first mask (16) having a pattern for defining a first set of structures (4, 6, 7, 8) at a first depth, a projection lens (17) for forming a reduced size image of said pattern on the surface (3) of the substrate and a beam scanner arranged to scan said first pulsed laser beam (13) in a two-dimensional raster scan relative to the first pattern to form a first set of structures (4, 6, 7, 5) at a first depth in the substrate, wherein the first or a further solid state laser is arranged to form a second set of structures (8) at a second depth in the substrate (3).

    Abstract translation: 公开了在电介质基板（3）的表面中形成两个或更多深度的精细尺度结构（4,4'，5“，6,7,8）的装置和方法。 在一个示例中，装置25包括布置成提供第一脉冲激光束（13）的第一固态激光器（12），具有用于限定第一组结构（4,6,7）的图案的第一掩模（16） ，8）在第一深度处，用于在所述基板的表面（3）上形成所述图案的缩小尺寸图像的投影透镜（17）和布置成以二维扫描所述第一脉冲激光束（13）的光束扫描器 相对于第一图案的三维光栅扫描，以在衬底中的第一深度处形成第一组结构（4,6,7,5），其中第一或另一固体激光器被布置成形成第二组 在基板（3）中的第二深度处的结构（8）。

    Dual channel pumping method laser with metal vapor and noble gas medium
    79.
    发明授权
    Dual channel pumping method laser with metal vapor and noble gas medium 有权
    双通道泵浦法激光与金属蒸汽和惰性气体介质

    公开(公告)号：US09106052B2

    公开(公告)日：2015-08-11

    申请号：US14149407

    申请日：2014-01-07

    Applicant: The Board of Trustees of the University of Illinois

    Inventor： J. Gary Eden ,  John Darby Hewitt

    IPC: H01S3/30 ,  H01S3/091

    CPC classification number: H01S3/094096 ,  H01S3/0408 ,  H01S3/094092 ,  H01S3/0941 ,  H01S3/095 ,  H01S3/2207 ,  H01S3/227

    Abstract: A laser pumping method pumps a primary amount of energy into the near red satellite band of a metal vapor and noble gas mixture laser medium and a lesser amount of energy is pumped into a highly excited level to stimulate laser output. The medium is can be a Rb vapor and Xe gas mixture. The lesser amount of energy is pumped into the laser medium to populate an excited level that lies above the upper laser level and transfers atomic or molecular population to the upper laser level by a nonradiative process. In preferred embodiments, the intermediate level is within a few kT of the upper laser level and the primary amount of energy is a large majority of the total energy. A laser device includes metal vapor and noble gas mixture laser medium to populate an intermediate level near an upper laser level, and pumping a lesser amount of energy into a highly excited level to stimulate laser output. The medium can be an Rb vapor and Xe gas mixture in preferred embodiments. A primary energy pump pumps population in a near red satellite band. A second energy pump having substantially less energy than the primary energy pump pumps population to a highly excited level.

    Abstract translation: 激光泵浦方法将一定量的能量泵入金属蒸气和惰性气体混合物激光介质的近红色卫星频带，并将较少量的能量泵入高激发水平以刺激激光输出。 介质可以是Rb蒸汽和Xe气体混合物。 将较少量的能量泵送到激光介质中以填充位于上激光水平上方的激发水平，并通过非辐射过程将原子或分子群体转移到上激光水平。 在优选实施例中，中间电平在上激光水平的几kT内，而主要的能量量是总能量的绝大部分。 激光装置包括金属蒸汽和惰性气体混合物激光介质，以填充靠近上激光水平的中间水平，并将较少量的能量泵送到高激发水平以刺激激光输出。 在优选实施方案中，介质可以是Rb蒸气和Xe气体混合物。 一个主要能源泵泵浦近红色卫星频带的人口。 第二能量泵具有比一次能量泵泵的能量明显更少的能量到高度激发的水平。

    Method for Achieving High-Power Solid-State Lasers by Multiple Beams Combination Using Cascaded Compound Laser Resonators
    80.
    发明申请
    Method for Achieving High-Power Solid-State Lasers by Multiple Beams Combination Using Cascaded Compound Laser Resonators 审中-公开
    使用级联复合激光谐振器通过多光束组合实现大功率固态激光器的方法

    公开(公告)号：US20150222084A1

    公开(公告)日：2015-08-06

    申请号：US14417600

    申请日：2013-09-30

    Applicant: JIANGSU ZHONGKESIXIANG LASER TECHNOLOGY CO. LTD

    Inventor： Pengfei Zhao ,  Peichen Lin ,  Xuechun Lin ,  Zhiyong Dong

    IPC: H01S3/23 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/02

    CPC classification number: H01S3/2316 ,  H01S3/025 ,  H01S3/07 ,  H01S3/08 ,  H01S3/0813 ,  H01S3/082 ,  H01S3/0941 ,  H01S3/10092 ,  H01S3/1698 ,  H01S3/2383

    Abstract: A method for achieving high-power solid-state lasers by multiple beams combination using cascaded compound laser oscillators, comprising the following steps: 1) Designing a compound resonator to achieve an output beam perpendicular to the axis of oscillation in which a compensating lens is used; 2) Designing beam combination of two independent solid-state lasers in cascaded compound cavities and using 4f optical system to compensate the beam waist separation between two lasers; 3) Based on the first two steps, multiple beams combination of N independent solid-state lasers can be achieved. In the present invention, N output beams emitted from N independent solid-state lasers are completely combined, and the combined beams hold the same waist position, size and divergence along down the same optical axis. Therefore, it can preserve original beam quality with that of individual solid-state lasers.

    Abstract translation: 一种使用级联复合激光振荡器通过多光束组合实现大功率固体激光器的方法，包括以下步骤：1）设计复合谐振器以实现垂直于使用补偿透镜的振荡轴的输出光束 ; 2）在级联复合腔中设计两个独立的固态激光器的光束组合，并使用4f光学系统来补偿两个激光器之间的束腰分离; 3）基于前两个步骤，可以实现N个独立固态激光器的多光束组合。 在本发明中，从N个独立的固态激光器发出的N个输出光束被完全组合，并且组合的光束沿相同的光轴沿着相同的腰围位置，尺寸和发散度。 因此，它可以保留原来的光束质量与单个固态激光器的质量。

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