1. Edge trapping of exciton-polariton condensates in etched pillars.
- Author
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Myers, D. M., Wuenschell, J. K., Ozden, B., Beaumariage, J., Snoke, D. W., Pfeiffer, L., and West, K.
- Subjects
EXCITON theory ,POLARITONS ,PHONONS ,PHOTOLITHOGRAPHY ,PHOTOMECHANICAL processes - Abstract
In this letter, we present a study of the condensation of exciton-polaritons in large etched pillar structures that exhibit shallow edge trapping. The ≈100 µm 100 x µm pillars were fabricated using photolithography and a BCl
3 /Cl2 reactive ion etch. A low energy region emerged along the etched edge, with the minima ≈7 µm from the outer edge. The depth of the trap was 0.5-1.5meV relative to the level central region, with the deepest trapping at the corners. We were able to produce a Bose-Einstein condensate in the trap near the edges and corners by pumping non-resonantly in the middle of the pillar. This condensate began as a set of disconnected condensates at various points along the edges but then became a single mono-energetic condensate as the polariton density was increased. Similar edge traps could be used to produce shallow 1D traps along edges or other more complex traps using various etch geometries and scales. [ABSTRACT FROM AUTHOR]- Published
- 2017
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