Permissions for Reuse

On p. 2, first column, last paragraph, the sentence before the last contains a typographical error: “decrease” should be changed to “increase,” i.e., the sentence should read: “The observed redshift of the resonance indicates a refractive index increase as expected from sample heating.”

The explanation of the Q factor decrease in the sentence following it should be corrected as: “Q factors probably decrease because of pump-induced absorption and because the structure deviates from the optimal design which assumed the room-temperature refractive index.”

None of the results and conclusions of the paper are affected by this correction.