Muhammad Nurhuda, Heru Budiono, Akira Suda, Katsumi Midorikawa
A pressure gradient method for spectral broadening of intense-femtosecond laser pulses in gas-filled hollow fiber is proposed. The simulations using input energy of 6 mJ and pulse duration of 40 fs have shown that using the same value of f p(x)dx, the energy transmittance can be enhanced by a factor of 25% compared to that of using constant gas pressure while the global spatial phase is also improved.
Physics Department, Brawijaya University, Malang, 65144, Indonesia; RIKEN, Wako-shi, Saitama 351-0198, 2-1 Hirosawa, Japan
