An overview of LLNL high-energy short-pulse technology for advanced radiography of laser fusion experiments

CPJ Barty, M Key, J Britten, R Beach, G Beer… - Nuclear …, 2004 - iopscience.iop.org
The technical challenges and motivations for high-energy, short-pulse generation with the
National Ignition Facility (NIF) and possibly other large-scale Nd: glass lasers are reviewed …

Analysis of the scalability of diffraction-limited fiber lasers and amplifiers to high average power

JW Dawson, MJ Messerly, RJ Beach, MY Shverdin… - Optics express, 2008 - opg.optica.org
We analyze the scalability of diffraction-limited fiber lasers considering thermal, non-linear,
damage and pump coupling limits as well as fiber mode field diameter (MFD) restrictions …

Microstructured optical fibre having a large core and a flattened fundamental mode, production method thereof and use of same in laser microfabrication

E Hugonnot, L Lago, A Mussot… - US Patent …, 2016 - Google Patents
The fiber comprises a core (2) having an index N and diameter of 10 μm or more,
surrounded by a ring (4) having an index N+ Δn and thickness ΔR, and cladding (6) …

[PDF][PDF] 基于全光纤结构的光束匀化整形技术研究进展

张栩, 邢颍滨, 褚应波, 陈瑰, 戴能利… - Laser & …, 2022 - researching.cn
摘要光纤激光器被广泛应用于工业加工, 军事国防等领域, 其输出的激光能量分布往往呈类高斯
型分布, 这种光斑直径内的非均匀能量分布在应用于光刻, 焊接等方面时往往会影响光斑内沿 …

Laser challenges for fast ignition

JD Zuegel, S Borneis, C Barty, B Legarrec… - Fusion Science and …, 2006 - Taylor & Francis
The laser challenges and state of the art in high-energy, solid-state petawatt lasers for fast
ignition (FI) research are reviewed. A number of new laser systems are currently under …

Top-hat beam output of a single-mode microstructured optical fiber: Impact of core index depression

C Valentin, P Calvet, Y Quiquempois, G Bouwmans… - Optics …, 2013 - opg.optica.org
A new strategy to obtain a single-mode fiber with a flattened intensity profile distribution is
presented. It is based on the use of an OVD-made high index ring deposited on a silica rod …

Waveguides having patterned, flattened modes

MJ Messerly, PH Pax, JW Dawson - US Patent 9,170,367, 2015 - Google Patents
US 2013/0202264 A1 Aug. 8, 2013 Primary Examiner—Jerry Rahill (74) Attorney, Agent, or
Firm—John P. Wooldridge Related US Application Data (63) Continuation-in-part of …

Gradient-index design for mode conversion of diffracting beams

WM Kunkel, JR Leger - Optics Express, 2016 - opg.optica.org
Gradient-index (GRIN) media offer advantages over thin optical elements for beam shaping
of strongly diffracting fields. A numerical GRIN design method is presented, where diffraction …

Approximate modal cut-off wavelengths and the V-parameter for M-type optical fibers and its novel applications

D Jain, MA George, B Harris… - Journal of Lightwave …, 2021 - opg.optica.org
We develop an intuitive understanding for the various properties and guiding mechanism of
M-type fibers. We also report the approximate expression for the V-parameter (normalized …

Machine learning aided inverse design for flattop beam fiber

Y Guo, Y Cheng, Y Jiang, M Cao, M Tang, W Ren… - Optics …, 2022 - Elsevier
The flattop (FT) beam, one important laser beam, is often applied to the high-power fiber
laser. It is preferred to generate the FT beam by M-type fiber. However, the design of optical …