Optical dephasing of molecular dimers in mixed crystals: Picosecond photon echo experiments
โ Scribed by F.G. Patterson; William L. Wilson; H.W.H. Lee; M.D. Fayer
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 551 KB
- Volume
- 110
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
โฆ Synopsis
in ha1 form 1 July 19S4 l'icosocond photon cc110 csperimcnts arc used to csamine opticA dephasing of substitutional dinters and monon~crs of tetrxenc and pcntaccne in p-terphenyl host crystals. _ 4 comparison of cspuriments on tetrxenc and pcntxenc diners pennits the nnxltanim rcsponsiblc for tenlperature-depcndent opticA dephasing to bc determined. it is shown that cscitation of librations rather than scatteriq between dclocalizcd dimrr st;ltcs is the principal mcclxmism.
๐ SIMILAR VOLUMES
C/lcrrlrrfr\_l~ Dc/lorrrrlerlr, SrorlJwl chIlvcrsrry, Srorr~ord, Culf/onm 94305, us4 Ophcnl dcpllasmg 01 pcnraccnc dlmcrs m p-tcrplxnyl LC studtcd Dlmcr stdtcs Rx and R4 c\hlblt an ckponential tcmpcrdturc xhvdtmn ot Ti whelm IS mcorwstent wth a mcchnnism mvolting snttcrmg bchvccn dclocakzcd dlmcr st
Picosecond time scalt~ high-pouer pulse optical coherence mezurements mciuding photon echo ad the stimulrtted photon echo Jre obtained with .I mode-locked d>e laser synchronously pumped by a doubled Q-s~itched and mode-locked Nd: YAG laser\_ Effects on coherence arising from ewitation with Gaussian
Photon echo evperlments are performed on delocabzed electromc evcltatlons of optxal dlmer states The delGuhzed dlmer states are found to have very long coherence times. close to the coherent hnxt The dlmer dephasmg IS quabtatlvely slmdar to dephasmg of pentacene monomers.
The homogeneous optical dephasing times (T,) and the non-photochemical hole burning (NPHB) linewidths of resorutin in glycerol glass are reported from 1.1 to 25.5 K. At low temperature, the linewidths obtained from NPHB are substantially wider than the linewidths (l/x T2) obtained from photon echo m