Two-photon absorption coefficients of several liquids at 264 nm

The nonlinear absorption of water (H/sub 2/O), heavy water (D/sub 2/O), ethanol, methanol, hexane, cyclohexane, 1, 2-dichloroethane, and chloroform at 264 nm was studied using femtosecond laser pulses. The two-photon absorption coefficients for these liquids were found to be between (34 /spl plusmn/ 3) /spl times/ 10/sup -11/ cm/W and (95 /spl plusmn/ 11) /spl times/ 10/sup -11/ cm/W.