Role of femtosecond pulses in distinguishing third- and fifth-order nonlinearity for semiconductor-doped glasses

Bindra, K. S.; Kar, A. K.
December 2001
Applied Physics Letters;12/3/2001, Vol. 79 Issue 23, p3761
Academic Journal
We report Z-scan experiments at a frequency below the band gap of semiconductor-doped glasses using 100 fs laser pulses. A large contribution from the positive third-order nonlinearity is observed in complete contrast with the picosecond z-scan experiments. The third- and fifth-order nonlinearity for semiconductor-doped glasses can be estimated from z-scans for ps and fs pulses. © 2001 American Institute of Physics.


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