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Nonlinear optical absorption of antimony and lead oxyhalide glasses
The optical limiting behavior and nonlinear optical properties of antimony and lead oxyhalide glasses were discussed. The large nonlinear absorption coefficients which range from 11 to 20 cm/GW was determined using standard ...
Giant non-linear absorption in Er3+-doped fluoroindate glass
Non-linear absorption is observed in Er3+-doped fluoroindate glass (in mol% 37InF2:20ZnF2:20SrF2:16BaF2:2GdF2: 2NaF:1GaF3:2ErF3) when the sample is irradiated with a CW laser emitting at 650 nm. An intensity dependence of ...
Nonlinear absorption spectrum in perylene derivatives
Knowledge about nonlinear absorption spectra of materials used in photonic devices is of paramount importance in determining their optimum operation wavelengths. In this work, we have investigated the two-photon absorption ...
Upconversion of infrared-to-visible light in Pr3+-Yb3+ codoped fluoroindate glass
Bright fluorescence in the visible range has been observed in Pr3+-Yb3+ doped fluoroindate glass under infrared diode laser irradiation. The mechanism which contributes for the upconversion emission is identified and the ...
Spectroscopic properties of Tm3+ doped fluoroindate glass
Optical absorption and fluorescence were investigated in Tm3+ doped fluoroindate glass. The spectroscopic parameters for transitions in the 4f11 configuration were determined. The fluorescence study revealed the origin of ...
Variability in the light absorption coefficients of phytoplankton, nonalgal particles, and colored dissolved organic matter in a subtropical bay (Brazil)
This study characterized the variability in magnitudes and spectral shapes of the absorption coefficients of phytoplankton, detritus, and colored dissolved organic matter (CDOM) in a dynamic bay (Santos Bay) in southeastern ...