Laser properties of luminescent conducting polymers in open resonators

Nayer Eradat Oskouei; Werner Gellermann; Maxim N. Shkunov; Sergey V. Frolov; M. Osaki; Katsumi Yoshino; Z. Valy Vardeny

doi:10.1117/12.295544

1 December 1997 Laser properties of luminescent conducting polymers in open resonators

Nayer Eradat Oskouei, Werner Gellermann, Maxim N. Shkunov, Sergey V. Frolov, M. Osaki, Katsumi Yoshino, Z. Valy Vardeny

Proceedings Volume 3148, Organic Light-Emitting Materials and Devices; (1997) https://doi.org/10.1117/12.295544
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

We have investigated the lasing properties of several luminescent conducting polymers, i.e. DOO-PPV and the bi- substituted polyacetylenes PDPA-nBu, and PH_xPA, dissolved in various polar and non-polar solvents. PPV polymers emit with high quantum efficiencies in broad emission bands cantered in the orange/red region of the spectrum, depending on the solvent, and the PDPA polymers emit in the blue/green region. Our tested laser resonators include polymer solutions excited with 100 ps pulses from a regeneratively amplified mode-locked Nd:YAG laser. We obtain pulsed, low-threshold laser operation with repetition rate of up to 1 kHz. Resulting mainly from recent reported originally in the literature. The dependencies of threshold pump energy and output versus input power characteristics on material parameters are investigated for a fixed optical gain length. The results are compared with the standard Rhodamine 590 organic dye system used in the same wavelength regions. We have observed that the well know phenomenon of 'concentration quenching' in dye molecules does not happen in polymers. Spectral narrowing in PDPA-nBu solution, emitting near 500 nm, is also obtained for the first time.

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Nayer Eradat Oskouei, Werner Gellermann, Maxim N. Shkunov, Sergey V. Frolov, M. Osaki, Katsumi Yoshino, and Z. Valy Vardeny "Laser properties of luminescent conducting polymers in open resonators", Proc. SPIE 3148, Organic Light-Emitting Materials and Devices, (1 December 1997); https://doi.org/10.1117/12.295544

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KEYWORDS

Polymers

Rhodamine

Absorption

Laser resonators

Picosecond phenomena

Mirrors

Resonators

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