Picosecond Transient Absorption of Xanthene Dyes

• Authors: O. Berndt , F. Bandt , I. Eichwurzel , H. Stiel
• Languages of publication: EN

Abstracts

EN

After one- and two-colour ps-excitation the transient absorption of rose bengal, erythrosin B and eosin Y in the spectral range from 450 to 670 nm was probed using picosecond continuum pulses generated in H_{2}O-D_{2}O mixture. Our experiments showed for all dyes a high T_{1}-T_{n} absorption signal above 590 nm where no ground state absorption occurs. These excited triplet states can be effectively populated by a delayed second pump pulse. Their properties with special attention to reverse intersystem crossing processes from T_{n} to S_{x} are discussed.

Keywords

EN

31.50.+w; 33.50.-j; 78.47.+p

Discipline

• 33.50.-j: Fluorescence and phosphorescence; radiationless transitions, quenching (intersystem crossing, internal conversion)(for energy transfer, see also section 34; for biophysical applications, see 87.64.kv)

• Journal: Acta Physica Polonica A
• Year: 1999
• Volume: 95
• Issue: 2
• Pages: 207-220

Dates

published

1999-02

received

1998-07-23

(unknown)

1998-12-28

Contributors

author

O. Berndt

• Max-Born-Institut für Nichlineare Optik und Kurzzeitspektroskopie, Rudower Chaussee 6, 12489 Berlin, Germany

author

F. Bandt

• Max-Born-Institut für Nichlineare Optik und Kurzzeitspektroskopie, Rudower Chaussee 6, 12489 Berlin, Germany

author

I. Eichwurzel

• Max-Born-Institut für Nichlineare Optik und Kurzzeitspektroskopie, Rudower Chaussee 6, 12489 Berlin, Germany

author

H. Stiel

• Max-Born-Institut für Nichlineare Optik und Kurzzeitspektroskopie, Rudower Chaussee 6, 12489 Berlin, Germany

Identifiers

DOI

10.12693/APhysPolA.95.207