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  1. Rapid Production of Arbitrary Fiber Bragg Gratings using Femtosecond Laser Radiation

  2. Deep (up to -53 dB) fiber Bragg gratings of arbitrary design and wavelength were rapidly written in standard single-mode optical fiber (SMF-28) using 800 nm femtosecond laser radiation using point-by-point inscr iption.

  3. 所属分类：其它

    • 发布日期：2009-08-25
    • 文件大小：186368
    • 提供者：guofw

  1. Femtosecond Laser Spectroscopy

  2. Femtosecond Laser Spectroscopy

  3. 所属分类：Veritas

    • 发布日期：2009-09-04
    • 文件大小：11534336
    • 提供者：seacsd

  1. Channel waveguides fabrication in bulk Lithium Niobate using femtosecond pulses

  2. Channel waveguides fabrication in bulk Lithium Niobate using femtosecond pulses，张双根，姚江宏 ，Channel waveguides in Z-cut bulk congruent LiNbO3 have been fabricated with a femtosecond laser. The propagation loss in waveguides is lower than 1dB/cm.

  3. 所属分类：其它

    • 发布日期：2020-03-12
    • 文件大小：650240
    • 提供者：weixin_38658564

  1. Ethanol-assisted ablation of silicon and germanium by temporally shaped femtosecond pulses

  2. A surprising phenomenon can be discovered by using femtosecond double-pulse ablation of silicon and germanium in ethanol. The ablation areas present an oscillation increase phenomenon when the pulse delay increases from 200 fs to 1 ps in the fluence

  3. 所属分类：其它

    • 发布日期：2021-03-02
    • 文件大小：641024
    • 提供者：weixin_38515897

  1. Structured laser beams: toward 2-μm femtosecond laser vortices

  2. Structured ultrashort-pulse laser beams, and in particular eigenmodes of the paraxial Helmholtz equation, are currently extensively studied for novel potential applications in various fields, e.g., laser plasma acceleration, attosecond science, and f

  3. 所属分类：其它

    • 发布日期：2021-03-01
    • 文件大小：1048576
    • 提供者：weixin_38565628

  1. Influence of scanning velocity on femtosecond laser direct writing lines on FOTURAN glass

  2. Lines are induced on the surface of a photosensitive (FOTURAN) glass by focused femtosecond laser transverse writing with scanning velocity in a wide range of 40-1800 μm/s. The formed lines are analyzed using scanning electron microscope (SEM) and op

  3. 所属分类：其它

    • 发布日期：2021-02-27
    • 文件大小：691200
    • 提供者：weixin_38630463

  1. Multi-pulse operation of a Kerr-lens mode-locked femtosecond laser

  2. Our experimental results show that the presence of a proper amount of negative group velocity dispersion is essential to multi-pulse operation of a Kerr-lens mode-locked femtosecond laser. We demonstrate that the pulse separations and the number of p

  3. 所属分类：其它

    • 发布日期：2021-02-27
    • 文件大小：326656
    • 提供者：weixin_38526780

  1. Competition between multiphoton/tunnel ionization and filamentation induced by powerful femtosecond laser pulses in air

  2. In this work we present experiments by focusing 42 femtosecond laser pulses in air using three different focal length lenses: f=100, 30 and 5 cm. For the longest focal length, only the filament, which is a weak plasma column, is observed. When the sh

  3. 所属分类：其它

    • 发布日期：2021-02-27
    • 文件大小：694272
    • 提供者：weixin_38688855

  1. Newly designed multilayer thin film mirror for dispersion compensation in Ti:sapphire femtosecond lasers

  2. There are two different effects to generate group delay dispersion by multilayer thin film mirrors: chirper effect and Gires-Tournois effect. Both effects are employed to introduce desired dispersion in the designed mirror. Thus the designed mirror p

  3. 所属分类：其它

    • 发布日期：2021-02-26
    • 文件大小：281600
    • 提供者：weixin_38655780

  1. Ultrafast thermoelasticity modeling of microbump formation irradiated by femtosecond laser

  2. Finite element method and ultrafast thermoelasticity model are combined to simulate the microbump formation irradiated by a femtosecond laser. It has been shown that the effect of microbump formation is related to the characteristic of incident femto

  3. 所属分类：其它

    • 发布日期：2021-02-26
    • 文件大小：739328
    • 提供者：weixin_38747566

  1. Femtosecond laser microstructuring of nickel foil

  2. We observe the morphological change and grain structure of Ni foil when it is ablated with femtosecond laser pulses. Scanning electron microscopy and ˉeld emission transmission electron microscopy are used to study the nature of the morphology and gr

  3. 所属分类：其它

    • 发布日期：2021-02-26
    • 文件大小：1048576
    • 提供者：weixin_38752459

  1. Stable, efficient diode-pumped femtosecond Yb:KGW laser through optimization of energy density on SESAM

  2. An efficient high-power diode-pumped femtosecond Yb:KGW laser is repored. Through optimization of energy density by semiconductor saturable absorber mirror, output power achieved 2.4 W with pulse duration of 350 fs and repetition rate of 53 MHz at a

  3. 所属分类：其它

    • 发布日期：2021-02-25
    • 文件大小：237568
    • 提供者：weixin_38748555

  1. Terahertz radiation from InN by femtosecond optical pulses of different wavelengths

  2. The characteristics of terahertz radiation from an n-type InN excited by femtosecond laser pulses tunable from 750 to 840 nm are experimentally studied. Terahertz emission from InN is closely bound up with the Dember effect. Terahertz emission can be

  3. 所属分类：其它

    • 发布日期：2021-02-25
    • 文件大小：173056
    • 提供者：weixin_38607479

  1. Intense Bessel femtosecond pulse propagation in dispersive Kerr medium

  2. The performance of intense Bessel femtosecond pulse propagation in dispersive medium is investigated. Water is chosen as the Kerr medium with large dispersion. We find that within the dispersion length, the temporal profile integrated over the beam r

  3. 所属分类：其它

    • 发布日期：2021-02-25
    • 文件大小：418816
    • 提供者：weixin_38583286

  1. Femtosecond laser ablation of silicon in air and vacuum

  2. Femtosecond (fs) pulse laser ablation of silicon targets in air and in vacuum is investigated using a time-resolved shadowgraphic method. The observed dynamic process of the fs laser ablation of silicon in air is significantly different from that in

  3. 所属分类：其它

    • 发布日期：2021-02-25
    • 文件大小：1048576
    • 提供者：weixin_38685521

  1. Efficient generation of third harmonics in Yb-doped femtosecond fiber laser via spatial and temporal walk-off compensati

  2. On the basis of a home-made femtosecond Yb-doped fiber laser, we designed a compact and efficient third harmonic generation scheme by a simple compensation plate of β-BaB

  3. 所属分类：其它

    • 发布日期：2021-02-23
    • 文件大小：994304
    • 提供者：weixin_38657115

  1. One-step formation of multifunctional nano- and microscale structures on metal surface by femtosecond laser

  2. Metals in nature exhibit a mediocre wettability and a high optical reflectance from the visible region to the infrared. This Letter reports that, by formation of nano- and microscale structures via a simple raster scanning of a focused femtosecond la

  3. 所属分类：其它

    • 发布日期：2021-02-23
    • 文件大小：507904
    • 提供者：weixin_38557515

  1. High-repetition-rate femtosecond laser micromachining of poly(methyl methacrylate)

  2. Investigations are performed to explore high-repetition-rate femtosecond laser ablation effects on the physical and chemical properties of poly(methyl methacrylate) (PMMA). A scanning electron microscopy (SEM) is used to characterize the morphology c

  3. 所属分类：其它

    • 发布日期：2021-02-23
    • 文件大小：363520
    • 提供者：weixin_38661087

  1. Highly sensitive and homogeneous SERS substrate fabricated by a femtosecond laser combined with dewetting

  2. We report a simple, cost-effective and repeatable method for fabricating a large area and uniform substrate for surface-enhanced Raman scattering (SERS). The silicon, micromachined by a femtosecond laser, is coated with gold film and then treated thr

  3. 所属分类：其它

    • 发布日期：2021-02-23
    • 文件大小：753664
    • 提供者：weixin_38715097

  1. Group velocity dispersion effect on the collapse of femtosecond laser pulses in air: a revised form for Marburger’s law

  2. The influence of group velocity dispersion (GVD) on the self-focusing of femtosecond laser pulses is investigated by numerically solving the extended nonlinear Schr?dinger equation. By introducing the GVD length LGVD into the semi-empirical, self-foc

  3. 所属分类：其它

    • 发布日期：2021-02-23
    • 文件大小：229376
    • 提供者：weixin_38645862
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