PMID- 19844547 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20121002 LR - 20190703 IS - 0146-9592 (Print) IS - 0146-9592 (Linking) VI - 19 IP - 15 DP - 1994 Aug 1 TI - Determination of resonant and nonresonant third-order nonlinearities of organic molecules by phase-conjugate interferometry. PG - 1113-5 AB - We have used a phase-conjugate interferometer to determine the real and imaginary parts of the third-order hyperpolarizability of 3,3'-diethyloxadicarbocyanine iodide (DODCI) and 4-methoxy-4'-nitrostilbene (MONS) at 1064 nm. For DODCI the values are enhanced by a two-photon resonance, and the two-photon extinction coefficient is determined. However, the nonlinear loss of DODCI is dominated by linear absorption from the two-photon excited state. We could not observe linear or nonlinear absorption for the MONS solutions, and we have determined the nonresonant third-order hyperpolarizability for this molecule. FAU - Tackx, P AU - Tackx P FAU - Kauranen, M AU - Kauranen M FAU - Persoons, A AU - Persoons A LA - eng PT - Journal Article PL - United States TA - Opt Lett JT - Optics letters JID - 7708433 EDAT- 1994/08/01 00:00 MHDA- 1994/08/01 00:01 CRDT- 2009/10/22 06:00 PHST- 2009/10/22 06:00 [entrez] PHST- 1994/08/01 00:00 [pubmed] PHST- 1994/08/01 00:01 [medline] AID - 12457 [pii] AID - 10.1364/ol.19.001113 [doi] PST - ppublish SO - Opt Lett. 1994 Aug 1;19(15):1113-5. doi: 10.1364/ol.19.001113.