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The interaction of laser radiation with aqueous dispersion of only bovine serum
albumin (BSA) 25 wt. %, only bovine collagen (BC) 2 wt. %, and 25 wt. % BSA with
single-walled carbon nanotubes (SWCNTs) 0.3 wt. % and 2 wt. % BC with
0.3 wt. % SWCNT was studied. The beam was absorbed mainly by nanotubes, that confirmed by
the small value of the nonlinear absorption coefficients for aqueous dispersed media with
BSA 6 cm·GW-1
, as well as dispersion with BK 4 cm·GW-1 and the large values of coefficients
for these media with addition of SWCNTs, respectively 350 cm·GW-1
and 70 cm·GW-1
.
Determination of nonlinear optical parameters was obtained by the method of fixed sample
location. Knowledge of the values of these parameters allowed calculating theoretical curve of Z-scan
with open aperture what made possible to compare with the experimental data.
Keywords: nonlinear optics; laser applications; three-dimensional printing; absorption. |
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