A method to achieve photoinduced tuning of PhC nanocavity modes is discussed and implemented. It is based on light induced oxidation in air atmosphere with very low thermal budget which produces a local reduction of the GaAs membrane effective thickness and a large blueshift of the nanocavity modes. It is also shown that green light is much more efficient in inducing the micro-oxidation with respect to near infrared light. The observed behaviour is attributed to oxide growth promoted by photoenhanced reactivity.

Mode tuning of photonic crystal nanocavities by photoinduced non-thermal oxidation

Riboli, Francesco;
2012-01-01

Abstract

A method to achieve photoinduced tuning of PhC nanocavity modes is discussed and implemented. It is based on light induced oxidation in air atmosphere with very low thermal budget which produces a local reduction of the GaAs membrane effective thickness and a large blueshift of the nanocavity modes. It is also shown that green light is much more efficient in inducing the micro-oxidation with respect to near infrared light. The observed behaviour is attributed to oxide growth promoted by photoenhanced reactivity.
2012
Francesca, Intonti; Niccolò, Caselli; Silvia, Vignolini; Riboli, Francesco; Santosh, Kumar; Armando, Rastelli; Oliver G., Schmidt; Marco, Francardi; Annamaria, Gerardino; Laurent, Balet; Lianhe H., Li; Andrea, Fiore; Massimo, Gurioli
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/98535
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