Zobrazeno 1 - 10
of 601
pro vyhledávání: '"Kolesik M"'
Autor:
Kolesik, M.
The propagation-effects reshaping the excitation pulse are known to exhibit a strong influence on the high-harmonic generation (HHG) in solid-state media. Previous measurements showed that the mid-infrared pulse dynamics, most importantly the nonline
Externí odkaz:
http://arxiv.org/abs/2405.12307
Autor:
Kolesik, M., Wright, E. M.
We demonstrate numerically that the long-wavelength nonlinear dipole moment and ionization rate versus electric field strength $F$ for different noble gases can be scaled onto each other, revealing universal functions that characterize the form of th
Externí odkaz:
http://arxiv.org/abs/1812.03541
Autor:
Sanjabieznaveh, Z., Eftekhar, M. A., Lopez, J. E. Antonio, Aviles, H. Lopez, Kolesik, M., Wise, F. W., Christodoulides, D. N., Correa, R. Amezcua
Blue-enhanced, broadband supercontinuum generation in a 50 um core fluorine-doped graded-index multimode fiber is demonstrated by pumping with a 1064 nm picosecond source. Multi-octave supercontinuum spectrum extending from ~400 nm to 2,400 nm is ach
Externí odkaz:
http://arxiv.org/abs/1810.11559
Publikováno v:
Phys. Rev. Lett. 120, 183901 (2018)
Although high field laser-induced ionization is a fundamental process underlying many applications, there have been no absolute measurements of the nonlinear polarizability of atoms and molecules in the presence of ionization. Such information is cru
Externí odkaz:
http://arxiv.org/abs/1802.03666
Akademický článek
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Akademický článek
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Publikováno v:
Optics Express, Vol. 20, Issue 14, pp. 16113-16128 (2012)
We introduce a new computational approach for femtosecond pulse propagation in the transparency region of gases that permits full resolution in three space dimensions plus time while fully incorporating quantum coherent effects such as high-harmonic
Externí odkaz:
http://arxiv.org/abs/1206.7070
Autor:
Andreasen, J., Kolesik, M.
Publikováno v:
Phys. Rev. E 86, 036706 (2012)
Unidirectional pulse propagation equations [UPPE, Phys. Rev. E 70, 036604 (2004)] have provided a theoretical underpinning for computer-aided investigations into dynamics of high-power ultrashort laser pulses and have been successfully utilized for a
Externí odkaz:
http://arxiv.org/abs/1206.5340
Using an exactly soluble one-dimensional atomic model we explore the idea that the recently observed high-order nonlinearity in optical filaments is due to virtual transitions involving the continuum states. We show that the model's behavior is quali
Externí odkaz:
http://arxiv.org/abs/1010.3750
According to a recent experiment, the instantaneous electronic Kerr effect in air exhibits a strong intensity dependence, the nonlinear refractive index switching sign and crossing over from a self-focusing to a de-focusing nonlinearity. A subsequent
Externí odkaz:
http://arxiv.org/abs/1003.4727