Stimulated Emission of Active Media in the Red Spectral Range

• Published in: Russian physics journal Vol. 59; no. 1; pp. 1 - 7
• Main Authors: Kopylova, T. N., Gadirov, R. M., Nikonov, S. Yu, Valiev, R. R., Tel’minov, E. N., Nikonova, E. N., Solodova, T. A., Alekseeva, V. I., Marinina, L. E., Savvina, L. P.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-05-2016; Springer
• Subjects: Condensed Matter Physics; Hadrons; Heavy Ions; Laser industry; Lasers; Mathematical and Computational Physics; Nuclear Physics; Numerical analysis; Optical Devices; Optics; Optics and Spectroscopy; Photonics; Physics; Physics and Astronomy; Raman spectroscopy; Theoretical; dye laser; induced absorption; lasing; fluorescence; XMC-QDPT2; numerical simulation
• ISSN: 1064-8887; 1573-9228
• DOI: 10.1007/s11182-016-0731-x

Spectral, luminescent, and lasing characteristics of chromene dyes and their julolidine analogs emitting in the red spectral range are investigated experimentally and theoretically. It is shown that the cause for a low lasing efficiency of oxochromene compared with iminochromene is a high intersystem crossing to the
T
1
state and the presence of the induced
T
1
→
T
n
absorption in the region of the luminescence band.