Open AccessTunable thermal diffusion and heat accumulation in transparent materials based on varying the scanning speed of a femtosecond laser
Author(s) -
Abdulsattar Khudhair Abbas,
Fadhil A. Umran,
Mazin M. Elias
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1067/1/012137
Subject(s) - femtosecond , materials science , laser , irradiation , laser scanning , thermal , optoelectronics , optics , laser power scaling , diffusion , porous glass , scanning electron microscope , porosity , composite material , physics , meteorology , nuclear physics , thermodynamics
Based on heat accumulation effects, symmetric optical waveguides in glass can be obtained via femtosecond laser irradiation. Such modification inside glass is interesting in terms of developing integrated mini-optical devices with 3-D structures and micro channels for biosensors. This work experimentally investigated the formation of micro-channels inside porous glass irradiated with an 800 nm, 100 fs, and 250 kHz femtosecond laser with scanning speeds ranging from 250 μm/s to 1000 μm/s at a fixed power of 300 mW. Strong heat accumulation effects were thus observed at laser scanning at 250μm/s, which offered significant variations in structure morphology.