Journal
PLASMONICS
Volume 8, Issue 4, Pages 1667-1674Publisher
SPRINGER
DOI: 10.1007/s11468-013-9585-z
Keywords
Lead pyrophosphate glasses; Copper nanoparticles; Surface plasmon resonance; Nonlinear optical properties
Funding
- FAPESP
- CAPES
- CNPq
- Elderson Cassio Domenicucci
- Crystal Grown and Ceramic Materials group (IFSC)
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We have prepared heavy metal oxide glasses containing metallic copper nanoparticles with promising nonlinear optical properties which were determined by Z-scan and pump-probe measurements using femtosecond laser pulses. For the wavelengths within the plasmon band, we have observed saturable absorption and response times of 2.3 ps. For the other regions of the spectrum, reverse saturable absorption and lifetimes shorter than 200 fs were verified. The nonlinear refractive index is about 2.0 x 10(-19) m(2)/W from visible to telecom region, thus presenting an enhancement effect at wavelengths near the plasmon and Cu+2 d-d band.
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