Optics: Whispering gallery modes in large systems

[user3]

While reading about whispering gallery modes, I have learned that whispering gallery modes can be seen for "microscopic spheres or toruses" -Wikipedia- , But can they practically be observed in relatively large prisms or glass spheres (m or even cm magnitude) ?

 

[Bobbywhy]

Whispering gallery modes can occur in light waves, sound waves, and electron density waves. For instance, see this:

Letter
Nature 457, 455-458 (22 January 2009) | doi:10.1038/nature07627; Received 12 July 2008; Accepted 6 November 2008
High-Q surface-plasmon-polariton whispering-gallery microcavity
Abstract only.
http://www.nature.com/nature/journal/v457/n7228/full/nature07627.html

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