Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 10, 2015
|
|
---|---|---|
Article Number | 15007 | |
Number of page(s) | 7 | |
DOI | https://doi.org/10.2971/jeos.2015.15007 | |
Published online | 19 February 2015 |
Regular paper
Optical amplification and stability of spiroquaterphenyl compounds and blends
1
University of Kassel, Macromolecular Chemistry and Molecular Materials, Institute of Chemistry and Center for Interdisciplinary Nanoscience and Technology, D-34109 Kassel, Germany
2
University of Kassel, Technological Electronics, Institute of Nanostructure Technologies and Analytics and Center for Interdisciplinary Nanoscience and Technology, D-34109 Kassel, Germany
Received:
31
October
2014
Revised:
26
January
2015
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 μ/cm2 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.
Key words: Amplified spontaneous emission / lasers / organic materials / optical materials / waveguides / threshold
© The Author(s) 2015. All rights reserved.
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