A. Dostovalova, *, S. Babina, M. Dubovb, M. Bareghehb, and V. Mezentsevb
a Institute of Automation and Electrometry, Siberian Branch of Russian Academy of Sciences,
ul. Koptyuga 1,, Novosibirsk, 630090 Russia
b Photonics Research Group, Aston University, Birmingham B47ET, United Kingdom
*e-mail: dostovalov@iae.nsk.su
Received October 31, 2011; published online April 3, 2012
Abstract—We present the results of comparative numerical study of femtosecond laser inscription for funda-
mental and second harmonic of Yb-doped laser. We have found that second harmonic is more efficient in terms
of amount of absorbed energy which leads to lower inscription threshold. Hence this regime is more attractive
for applications in femtosecond laser microfabrication. We observed the different size of modified domain on
initial pulse energy and different spectrum dynamics during the pulse propagation for fundamental and second
harmonics.
DOI: 10.1134/S1054660X12050064
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