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Microspheres for Optical Interactions |
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We investigate theoretically the mode volume Veff and quality factor Q of the fundamental whispering gallery mode of a silica microsphere. We determine the optimal sizes of microspheres for linear and nonlinear optical interactions. We find for the latter case that an optimal wavelength exists, which corresponds to the low-loss range for silica. For linear optical interactions, the optimal size is found to be relatively insensitive to the choice of wavelength. |
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(left) Whispering gallery mode of a silica microsphere, high confinement shows in both the polar and radial directions. (right) Q and Q/V vs. radius at 1550 nm, for linear interactions.
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I. H. Agha, J. E. Sharping, M. A. Foster, A. L. Gaeta, “Optimal sizes of silica microspheres for linear and nonlinear optical interactions”, Appl. Phys. B 83, 303-309 (2006). PDF
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| 159 Clark Hall |
| Cornell University |
| Ithaca, NY 14853 |
| (607) 255-0657 Lab |
| a.gaeta@cornell.edu |
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