TITLE

Thermal poling induced second-order nonlinearity in femtosecond- laser-modified fused silica

AUTHOR(S)
Honglin An; Fleming, Simon; McMillen, Benjamin W.; Chen, Kevin P.; Snoke, David
PUB. DATE
August 2008
SOURCE
Applied Physics Letters;8/11/2008, Vol. 93 Issue 6, p061115
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Thermal poling was utilized to induce second-order nonlinearity in regions of fused silica modified by 771 nm femtosecond laser pulses. With second-harmonic microscopy, it was found that the nonlinearity in the laser-modified region was much lower than that in nonmodified regions. This is attributed to a more rigid glass network after irradiation by the femtosecond laser pulses and/or lack of mobile alkali ions. Measurement of the distribution of chemical elements in the femtosecond-laser-modified region in a soda lime glass revealed a lower level of sodium ions.
ACCESSION #
34000003

 

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