Abstract
Significant advances have occurred in amorphous silicon-based photonic engineering. Previously we showed that amorphous silicon was an ideal matrix for photonic engineering because of the ease by which the refractive index can be controlled through in situ or ex situ hydrogen content manipulation. Concurrently we have been investigating the optical properties changes associated with the light-induced degradation of amorphous silicon materials. These investigations have identified a wide range of light-induced effects with far reaching prospects for photonic engineering. These changes include a slow light-induced reversible change related to structural change and a fast reversible light-induced changes thought to be related to electron–photon–phonon interaction. Significant to many potential applications light-induced changes in optical properties do not significantly decrease with increasing measurement temperature (up to the ∼200 °C probed by this work).
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