Journal of the European Optical Society - Rapid publications, Vol 10 (2015)

Optical amplification and stability of spiroquaterphenyl compounds and blends

T. Fuhrmann-Lieker, J. Lambrecht, N. Hoinka, M. Kiurski, A. Wiske, G. Hagelstein, N. Yurttagül, M. Abdel-Awwad, H. Wilke, F. Messow, H. Hillmer, J. Salbeck

Abstract


In this contribution, we present a systematic investigation on a series of spiroquaterphenyl compounds optimised for solid state lasing in the near ultraviolet (UV). Amplified spontaneous emission (ASE) thresholds in the order of 1 μJ/cm^2 are obtained in neat (undiluted) films and blends, with emission peaks at 390±1 nm for unsubstituted and meta-substituted quaterphenyls and 400±4 nm for para-ether substituted quaterphenyls. Mixing with a transparent matrix retains a low threshold, shifts the emission to lower wavelengths and allows a better access to modes having their intensity maximum deeper in the film. Chemical design and blending allow an independent tuning of optical and processing properties such as the glass transition.

© The Authors. All rights reserved. [DOI: 10.2971/jeos.2015.15007]

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