Excited state dynamics in tetra tolyl porphyrins studied using degenerate four wave mixing with incoherent light and ps pulses
| dc.contributor.author | Rao, S Venugopal | |
| dc.contributor.author | Naga Srinivas, N K M | |
| dc.contributor.author | Rao, D N | |
| dc.contributor.author | Giribabu, L | |
| dc.contributor.author | Maiya, B G | |
| dc.contributor.author | Philip, Reji | |
| dc.contributor.author | Kumar, G R | |
| dc.date.accessioned | 2012-06-19T03:43:28Z | |
| dc.date.available | 2012-06-19T03:43:28Z | |
| dc.date.issued | 2001-05 | |
| dc.description | Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations) | en |
| dc.description.abstract | We present our experimental results on the excited state dynamics in several tetra tolyl porphyrins (with different central metal-ions) studied using degenerate four wave mixing with nanosecond incoherent light (DFWM-IL) and picosecond time-resolved four wave mixing (DFWM-PS). Incoherent light studies indicate three lifetimes, which have been attributed to different excited states. The shortest component with a decay constant of /<170 fs is due to the vibrational relaxation in the higher excited singlet states Sn(T2), 3-6 ps component is due to the vibrational relaxation of the Franck-Condon states in S1(τvib), and the long component of 20-100 ps is due to the population relaxation (T1) from S1 to S0. The population relaxation times obtained from time-resolved DFWM studies using a picosecond laser substantiates these results. | en |
| dc.identifier.citation | Optics Communications, 2001, Vol192, p123-133 | en |
| dc.identifier.issn | 0030-4018 | |
| dc.identifier.uri | http://hdl.handle.net/2289/4722 | |
| dc.language.iso | en | en |
| dc.publisher | Elsevier | en |
| dc.relation.uri | http://dx.doi.org/10.1016/S0030-4018(01)01173-7 | en |
| dc.relation.uri | http://adsabs.harvard.edu/abs/2001OptCo.192..123R | en |
| dc.rights | 2001 Elsevier | en |
| dc.title | Excited state dynamics in tetra tolyl porphyrins studied using degenerate four wave mixing with incoherent light and ps pulses | en |
| dc.type | Article | en |