Patent
Guided wave methods and apparatus for nonlinear frequency generation
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TLDR
In this paper, the phase matching of nonlinear generation is obtained by adjusting a waveguide propagation constant, the refractive index of the nonlinear material, or the waveguide mode in which the radiation propagates.Abstract:
Methods and apparatus are disclosed for the nonlinear generation of sum and difference frequencies of electromagnetic radiation propagating in a nonlinear material. A waveguide having a waveguide cavity contains the nonlinear material. Phase matching of the nonlinear generation is obtained by adjusting a waveguide propagation constant, the refractive index of the nonlinear material, or the waveguide mode in which the radiation propagates. Phase matching can be achieved even in isotropic nonlinear materials. A short-wavelength radiation source uses phase-matched nonlinear generation in a waveguide to produce high harmonics of a pulsed laser.read more
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Journal ArticleDOI
Phase matching of high harmonic generation in the soft and hard X-ray regions of the spectrum
Tenio Popmintchev,Ming-Chang Chen,Alon Bahabad,Michael Gerrity,Pavel Sidorenko,Oren Cohen,Ivan P. Christov,Margaret M. Murnane,Henry C. Kapteyn +8 more
TL;DR: The rapidly decreasing microscopic single-atom yield, predicted for harmonics driven by longer-wavelength lasers, is compensated macroscopically by an increased optimal pressure for phase matching and a rapidly decreasing reabsorption of the generated X-rays, making tabletop, fully coherent, multi-keV X-ray sources feasible.
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References
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Book
Nonlinear Fiber Optics
TL;DR: The field of nonlinear fiber optics has advanced enough that a whole book was devoted to it as discussed by the authors, which has been translated into Chinese, Japanese, and Russian languages, attesting to the worldwide activity in the field.
Journal ArticleDOI
Hollow metallic and dielectric waveguides for long distance optical transmission and lasers
TL;DR: In this paper, the field configurations and propagation constants of a hollow circular waveguide made of dielectric material or metal for application as an optical waveguide were determined and the increase of attenuation due to curvature of the axis was also determined.
Journal ArticleDOI
Quasi-phase-matched optical parametric oscillators in bulk periodically poled LiNbO 3
TL;DR: In this article, the authors review progress in quasi-phase-matched optical parametric oscillators in bulk periodically poled LiNbO3, and demonstrate an oscillation threshold as low as 0.012 mJ with a Q-switched pump laser and pumping at greater than ten times threshold without damage.
Journal ArticleDOI
Generation of high-energy 10-fs pulses by a new pulse compression technique
TL;DR: In this article, a novel laser pulse compression technique for Ti:sapphire chirped pulse laser amplifiers, based on spectral broadening in a hollow cylindrical quartz fiber filled with noble gases at high pressure, was presented.
Journal ArticleDOI
Compression of high-energy laser pulses below 5 fs
Mauro Nisoli,S. De Silvestri,Orazio Svelto,Robert Szipocs,K. Ferencz,Ch. Spielmann,S. Sartania,Ferenc Krausz +7 more
TL;DR: High-energy 20-fs pulses generated by a Ti:sapphire laser system were spectrally broadened to more than 250 nm by self-phase modulation in a hollow fiber filled with noble gases and subsequently compressed in a broadband high-throughput dispersive system, resulting in the shortest generated to date at multigigawatt peak powers.