Realizing arbitrary trapping potentials for light via direct laser writing of mirror surface profiles

Christian Kurtscheid, David Dung, Andreas Redmann, Erik Busley, Jan Klaers, Frank Vewinger, Julian Schmitt, Martin Weitz

Research output: Contribution to journalLetterAcademicpeer-review

1 Citation (Scopus)

Abstract

The versatility of quantum gas experiments greatly benefits from the ability to apply variable potentials. Here we describe a method which allows the preparation of potential structures for microcavity photons via spatially selective deformation of optical resonator geometries with a heat-induced mirror surface microstructuring technique. We investigate the thermalization of a two-dimensional photon gas in a dye-filled microcavity composed of the custom surface-structured mirrors at wavelength-scale separation. Specifically, we describe measurements of the spatial redistribution of thermal photons in a coupled double-ridge structure, where photons form a Bose-Einstein condensate in a spatially split ground state, as a function of different pumping geometries.

Original languageEnglish
Article number54001
JournalEPL
Volume130
Issue number5
DOIs
Publication statusPublished - 23 Jun 2020

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