Direct imaging of tunneling from a potential well

Mathew Tomes*, Kerry J. Váhala, Tal Carmon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We experimentally map the wavefunction in the vicinity of a radial potential well. We photograph light intensity near the tunneling region as well as measure the spiraling phase structure via interference with a reference wave. This spiraling phase structure is required for conservation of angular momentum. The experimental image reveals the non-intuitive emission of light from a region in space that is empty of material and relatively far from the device.

Original languageEnglish
Pages (from-to)19160-19165
Number of pages6
JournalOptics Express
Issue number21
StatePublished - 12 Oct 2009
Externally publishedYes


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