Non-linear light modulation OSL phenomenon

A theoretical simulation and experimental verification of non-linear light modulation of optically stimulated luminescence (NL-OSL) technique has been demonstrated under first- and general-order kinetics. It is found that the NL-OSL technique gives all the information that can be obtained from the conventional LM-OSL technique with some useful features and flexibilities. It is observed that the NL-OSL curve is more symmetric than the LM-OSL curve. The NL-OSL technique can be useful in analyzing OSL traps having very low and closely lying values of photo-ionization cross-sections of meta-stable traps obeying different order of kinetics.