Atomic vapor spectroscopy in integrated photonic structures

Journal Article · Mon Jul 27 04:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4927172· OSTI ID:22486361

Ritter, Ralf; Kübler, Harald; Pfau, Tilman; Löw, Robert ^[1]; Gruhler, Nico; Pernice, Wolfram ^[2]

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1. 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart (Germany)
2. Institute of Nanotechnology, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen (Germany)

We investigate an integrated optical chip immersed in atomic vapor providing several waveguide geometries for spectroscopy applications. The narrow-band transmission through a silicon nitride waveguide and interferometer is altered when the guided light is coupled to a vapor of rubidium atoms via the evanescent tail of the waveguide mode. We use grating couplers to couple between the waveguide mode and the radiating wave, which allow for addressing arbitrary coupling positions on the chip surface. The evanescent atom-light interaction can be numerically simulated and shows excellent agreement with our experimental data. This work demonstrates a next step towards miniaturization and integration of alkali atom spectroscopy and provides a platform for further fundamental studies of complex waveguide structures.

• OSTI ID: 22486361
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 4 Vol. 107; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
GRATINGS
INTERFEROMETERS
MINIATURIZATION
RUBIDIUM
SILICON NITRIDES
SIMULATION
SPECTROSCOPY
SURFACES
TRANSMISSION
VAPORS
WAVEGUIDES