“Plastic” lasers: Comparison of gain narrowing with a soluble semiconducting polymer in waveguides and microcavities
- 16 June 1997
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 70 (24), 3191-3193
- https://doi.org/10.1063/1.119156
Abstract
Gain narrowing and lasing from a soluble, highly photoluminescent conjugated polymer, poly(2-butyl, 5-(2′-ethyl-hexyl)-1,4-phenylene vinylene) (BuEH-PPV), are compared using two resonant structures: planar waveguides and microcavities. The gain narrowing and lasing thresholds are comparable, 0.05–0.1 μJ (10 ns pulse focused to ∼1.5 mm). Gain narrowing is not observed in films on indium tin oxide (ITO) unless a cladding layer is placed between the BuEH-PPV and ITO. Single-mode microcavity lasers are obtained when a cavity resonance occurs at the wavelength where the gain of the polymer is maximum.Keywords
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