Spectrally resolved photon echo spectroscopy of Zn(II), Co(II) and Ni(II)-octaethyl porphyrins

Spectrally resolved femtosecond three-pulse photon echo signal from some metal-octaethyl porphyrins (M-OEPs) like Zn(II)-OEP, Ni(II)-OEP, Co(II)-OEP is reported.