Finding
The power dependence of the TPF intensity proved the second order nature of the interaction process involved.
Paper
Whispering gallery modes in two-photon fluorescence from spherical DCM dye microresonators
Abstract
Organic microstructures are well known for their resonator properties, which bring about whispering gallery mode (WGM) excitation. Here we report on experimental evidence of the WGM in the two-photon fluorescence (TPF) of DCM dye microspheres made using the self-assembly method. The WGM excitation accompanying the overall TPF in the spectral range from 530÷640 nm demonstrated a quality factor of approximately 102 for spheres that were several microns in diameter. The power dependence of the TPF intensity proved the second order nature of the interaction process involved.
Authors
E. Mamonov, A. Maydykovskiy, N. Mitetelo
Journal
Laser Physics Letters
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