Study of relaxation times of polymethine dyes used for passive mode locking of solid-state lasers emitting between 750 and 850 nm

Journal Article · Fri Nov 30 04:00:00 EST 2001 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2001V031N11ABEH002096· OSTI ID:21454749

Grigonis, R; Sirutkaitis, V A ^[1]; Derevyanko, Nadezhda A; Ishchenko, Aleksandr A ^[2]

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1. Laser Research Center, Vilnius University, Vilnius (Lithuania)
2. Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kiev (Ukraine)

The relaxation times {tau} of the bleached states of polymethine dyes absorbing light in the 750 - 850-nm are determined by the direct pump - probe method. The effect of the dye structure and the solvent type on the relaxation time is discussed. The role of different intra- and intermolecular interactions in the relaxation of excited electronic states of the dyes is analysed. Polymethine dyes are found (with {tau}=11 - 75 ps) that are promising for passive mode locking in Cr{sup 3+}:LiCaAlF{sub 6}, Cr{sup 3+}:KZnF{sub 3}, and Cr{sup 3+}:LiSrAlF{sub 6} crystal lasers. (laser applications and other topics in quantum electronics)

• OSTI ID: 21454749
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 11 Vol. 31; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHARGED PARTICLES
CHROMIUM IONS
CRYSTALS
DYES
ELECTROMAGNETIC RADIATION
INTERACTIONS
IONS
LASERS
MODE LOCKING
RADIATIONS
RELAXATION
RELAXATION TIME
SOLID STATE LASERS
VISIBLE RADIATION