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Nonlinear optical properties and Q-switch performance of silica glasses doped with CuxSe nanoparticles

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<mark>Journal publication date</mark>1/07/2006
<mark>Journal</mark>Journal of the Optical Society of America B
Issue number7
Number of pages8
Pages (from-to)1268-1275
Publication StatusPublished
<mark>Original language</mark>English


Glasses containing copper selenide nanoparticles (CuxSe) reveal an intense absorption band peaking at 1 um (1.24 eV). The transient bleaching and intensity-dependent transmission of silica glasses with CuxSe nanoparticles of different stoichiometry are studied with 1.08 um (1.15 eV) picosecond pulses. The bleaching relaxation time decreases with a shift in the absorption band maximum to the lower photon energies. The dependence of absorption on the input energy of the pulses is saturationlike at the beginning of the plateau at ∼40 mJ/cm2. Passive Q-switching of the Nd3+:KGd(WO4)2 laser at 1.067 um is realized with the CuxSe-doped glasses for different x.