Open AccessObservation of pressure wave generated by focusing a femtosecond laser pulse inside a glass
Author(s) -
Masaaki Sakakura,
Masahide Terazima,
Yasuhiko Shimotsuma,
Kiyotaka Miura,
Kazuyuki Hirao
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.005674
Subject(s) - optics , femtosecond , laser , materials science , signal (programming language) , pulse (music) , femtosecond pulse shaping , oscillation (cell signaling) , amplitude , physics , chemistry , detector , computer science , programming language , biochemistry
The pressure (or stress) wave generated by focusing a femtosecond laser pulse inside a glass has been considered one of the important factors in determining structures created in the laser focal region. In this paper, a method of the transient lens (TrL) analysis was proposed to characterize the pressure wave. Experimentally, the TrL signal exhibited damping oscillation within 2 ns. Simulations of the TrL signal showed that the shape of the oscillating signal depended on the width and amplitude of the pressure wave. Comparing the observed TrL signal with the simulated one, we estimated these properties of the pressure wave generated after femtosecond laser focusing inside a soda-lime glass.