Nonlinearities in GaAs cavities with high CW input powers enabled by photo-oxidation quenching through ALD encapsulation

We demonstrate that conformal encapsulation using atomic layer deposition of GaAs nano-cavity resonator made of photonic crystal cavity prevents photo-induced oxidation. This improvement allows injecting a large quantity of energy in the resonator without any degradation of the material, thus enabli...

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Bibliographic Details
Published in:Optics express 2018-03, Vol.26 (5), p.6400-6406
Main Authors: Moille, Gregory, Combrié, Sylvain, Morgenroth, Laurence, Lehoucq, Gaëlle, Sauvage, Sébastien, El Kurdi, Moustafa, Boucaud, Philippe, de Rossi, Alfredo, Checoury, Xavier
Format: Article
Language:English
Subjects:
Optics
Physics
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Summary:We demonstrate that conformal encapsulation using atomic layer deposition of GaAs nano-cavity resonator made of photonic crystal cavity prevents photo-induced oxidation. This improvement allows injecting a large quantity of energy in the resonator without any degradation of the material, thus enabling spectral stability of the resonance. We prove second harmonic and third harmonic generation over more than one decade of pump power variation, thanks to this encapsulation, with a total efficiency (ηSHG = 8.3 × 10 W and ηTHG = 1.2 × 10 W ) and a large net output energy for both operations (PSHGout=0.2nW and PTHGout=8pW).
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.26.006400