Multi-meter fiber-delivery and pulse self-compression of milli-Joule femtosecond laser and fiber-aided laser-micromachining.

We report on damage-free fiber-guidance of milli-Joule energy-level and 600-femtosecond laser pulses into hypocycloid core-contour Kagome hollow-core photonic crystal fibers. Up to 10 meter-long fibers were used to successfully deliver Yb-laser pulses in robustly single-mode fashion. Different pulse propagation regimes were demonstrated by simply changing the fiber dispersion and gas. Self-compression to ~50 fs, and intensity-level nearing petawatt/cm(2) were achieved. Finally, free focusing-optics laser-micromachining was also demonstrated on different materials.

[1]  Fei Yu,et al.  Picosecond and nanosecond pulse delivery through a hollow-core Negative Curvature Fiber for micro-machining applications. , 2013, Optics express.

[2]  Luca Vincetti,et al.  Complex FEM modal solver of optical waveguides with PML boundary conditions , 2001 .

[3]  J. Bille.  Femtosecond Lasers in Ophthalmology: Surgery and Imaging , 2008 .

[4]  A. Husakou,et al.  Supercontinuum generation of higher-order solitons by fission in photonic crystal fibers. , 2001, Physical review letters.

[5]  Xiang Peng,et al.  High average power, high energy 1.55 μm ultra-short pulse laser beam delivery using large mode area hollow core photonic band-gap fiber. , 2011, Optics express.

[6]  Georges Humbert,et al.  Hollow core photonic crystal fibers for beam delivery. , 2004, Optics express.

[7]  F Benabid,et al.  Hypocycloid-shaped hollow-core photonic crystal fiber Part I: arc curvature effect on confinement loss. , 2013, Optics express.

[8]  Benoit Debord,et al.  Optical Properties of Low Loss (70dB/km) Hypocycloid-Core Kagome Hollow Core Photonic Crystal Fiber for Rb and Cs Based Optical Applications , 2013, Journal of Lightwave Technology.

[9]  Tibor Juhasz,et al.  Femtosecond laser ablation of the stapes. , 2009, Journal of biomedical optics.

[10]  M. V. Ammosov.  Tunnel ionization of complex atoms and of atomic ions in an altemating electromagnetic field , 1987 .

[11]  G. Mourou,et al.  Laser ablation and micromachining with ultrashort laser pulses , 1997 .

[12]  Daniel Day,et al.  Femtosecond Biophotonics: Core Technology and Applications , 2010 .

[13]  P. Roberts,et al.  Low loss broadband transmission in hypocycloid-core Kagome hollow-core photonic crystal fiber. , 2011, Optics letters.

[14]  F. Benabid,et al.  Stimulated Raman Scattering in Hydrogen-Filled Hollow-Core Photonic Crystal Fiber , 2002, Science.

[15]  Dirk Müller,et al.  Generation of Megawatt Optical Solitons in Hollow-Core Photonic Band-Gap Fibers , 2003, Science.

[16]  W. Piyawattanametha,et al.  Optical design and imaging performance testing of a 9.6-mm diameter femtosecond laser microsurgery probe. , 2011, Optics express.

[17]  W. Piyawattanametha,et al.  9.6-mm Diameter femtosecond laser microsurgery probe , 2011, 2012 Conference on Lasers and Electro-Optics (CLEO).

[18]  A. Giesen,et al.  Tooth ablation using a CPA-free thin disk femtosecond laser system , 2004 .

[19]  Xiang Peng,et al.  Design and fabrication of hollow-core photonic crystal fibers for high-power ultrashort pulse transportation and pulse compression. , 2012, Optics letters.

[20]  A. Tünnermann,et al.  Femtosecond, picosecond and nanosecond laser ablation of solids , 1996 .

[21]  Eric Mazur,et al.  Femtosecond laser micromachining in transparent materials , 2008 .

[22]  F Benabid,et al.  Generation and Photonic Guidance of Multi-Octave Optical-Frequency Combs , 2007, Science.

[23]  Jon P. Longtin,et al.  Inert gas beam delivery for ultrafast laser micromachining at ambient pressure , 2001 .

[24]  D. Allan,et al.  Surface modes in air-core photonic band-gap fibers. , 2004, Optics express.