SEARCH Articles Figures Tables Detection of Higher Order Multiphoton Fluorescence from Organic Crystals Detection system, multiphoton Detection, multiphoton events Multiphoton Multiphoton ionization detection Multiphoton ionization detection mechanism Multiphoton ionization detection photofragment Multiphoton ionization detection photofragments Multiphoton ionization detection spectrum Multiphoton ionization detection states Two-Frequency Multiphoton Heterodyne Detection