Abstract
Nonlinear optical studies in semiconductor-doped glasses (SDGs) are performed under femtosecond laser pulse excitation. Z-scan experiments with 800 nm wavelength pulses are used to excite SDG samples in the resonance and non-resonance regimes. Schott colour glass filter OG 515 shows stronger two-photon absorption than GG 420 and both the samples exhibit positive nonlinearity. However, in resonantly excited RG 850 the intensity-dependent Z-scan shows transition from saturable to reverse saturable absorption behaviour with the increase in intensity.
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Singh, C.P., Bindra, K.S. & Oak, S.M. Nonlinear optical studies in semiconductor-doped glasses under femtosecond pulse excitation. Pramana - J Phys 75, 1169–1173 (2010). https://doi.org/10.1007/s12043-010-0202-9
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DOI: https://doi.org/10.1007/s12043-010-0202-9