Excitation Density Dependence of Optical Oxygen Sensing in Poly(9,9-dioctylfluorene) Waveguides Showing Amplified Spontaneous Emission

<table>Excitation density dependence of the PL spectra measured in vacuum. A clear ASE band is observed in the spectra for excitation density higher than about 120 <i>μ</i>Jcm<sup>−2</sup>.</table>

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Figure 1

Figure 1: Excitation Density Dependence of Optical Oxygen Sensing in Poly(9,9-dioctylfluorene) Waveguides Showing Amplified Spontaneous Emission 