Strong in-plane confinement of acoustic phonons in air-glass PCFs with sub-wavelength-scale cores is shown to result in an acoustic mode cut-off frequency, which acts like a Raman resonance. Spontaneous and photoacoustic measurements illustrate the effect.
© 2006 Optical Society of America
P. Dainese, P. S. J. Russell, G. S. Wiederhecker, N. Joly, and H. L. Fragnito, "Raman-Like Scattering from Acoustic Phonons in Photonic Crystal Fibre," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2006), paper CTuA1.
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