Photostability and loss mechanism of solid-state red perylimide dye lasers

R. Reisfeld*, R. Gvishi, Z. Burshtein

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

The lasing photostability of the red perylimide dye (RPD) in various solid matrices was measured under frequency-doubled Nd:YAG laser excitation. The RPD: composite glass laser intensity decayed to 50% of its initial value after approximately 20,000 pump pulses of 13 mJ/pulse. The output of RPD:ormosil glass and RPD:PMMA glass lasers decayed to 50% of their initial value after 1,200 and 1,000 pump pulses of the same energy, respectively. For rhodamine-6G:silica-gel and rhodamine-6G:ormosil glass lasers, the 50% decay occurred already after 1,000 and 300 pulses, respectively. The decay was non-exponential, suggesting that the dye bleaching was not a single-photon process. The average laser output decay rates increased linearly with the pump energy. Singlet-singlet excited state absorption of the RPD dye in the solid matrices was also measured between 550 and 730 nm. At ∼600 nm the cross section was ∼2×10-16 cm2/molecule. The excited-state absorption competes with the lasing, and is a main factor that limits the laser efficiency.

Original languageEnglish
Pages (from-to)49-55
Number of pages7
JournalJournal of Sol-Gel Science and Technology
Volume4
Issue number1
DOIs
StatePublished - Jan 1995

Keywords

  • photostability of solid-state visible lasers
  • red perylimide dye laser
  • solid-state tunable laser

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