Fabrication of cylindrical resonant microcavities using the confinement provided by partially oxidized algaas/gaas layers
Two different interfaces for optical confinement in GaAs resonators (air/GaAs/air, air/GaAs/AlOx) are compared in cylindrical microstructures with 10 um diameter. The AlOx is obtained by the lat- eral oxidation of Al0.9Ga0.1As layers. The spectrum of the resonators is obtained using a tapered fiber...
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| Main Authors: | , , , , |
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| Format: | Online |
| Language: | Portuguese |
| Published: |
Universidade Estadual de Campinas
2019
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| Subjects: | |
| Online Access: | https://econtents.sbu.unicamp.br/eventos/index.php/pibic/article/view/1702 |
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| Summary: | Two different interfaces for optical confinement in GaAs resonators (air/GaAs/air, air/GaAs/AlOx) are compared in cylindrical microstructures with 10 um diameter. The AlOx is obtained by the lat- eral oxidation of Al0.9Ga0.1As layers. The spectrum of the resonators is obtained using a tapered fiber system in the wavelength range of 1470nm to 1610nm. The modal separation agrees with our simulation. The quality factor for cylindrical microstructures with air/GaAs/air interface is almost twice the case with AlOx interface. Since it is expected that surface recombination velocity is reduced by a factor of ten for this last case, these structures are shown to be suitable for active resonators. |
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| ISSN: | 2596-1969 |
