Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session F11: Undergraduate Research VI
8:00 AM–10:36 AM,
Tuesday, March 3, 2020
Room: 110
Sponsoring
Unit:
APS/SPS
Chair: Alexis Knaub, Michigan State Univ
Abstract: F11.00010 : Double Resonant Local Fields Appreciably Enhance Third Harmonic Generation in Core-shell Nano-cavity
Presenter:
Zhongwei Wang
(Physics Department, Nanjing University)
Authors:
Wenbo Zang
(Physics Department, Nanjing University)
Zhuo Chen
(Physics Department, Nanjing University)
Zhongwei Wang
(Physics Department, Nanjing University)
Numerical simulations show that if the fundamental wavelength of the pump light is adjusted to 1390nm, which is the corresponding eigen wavelength of TM21 mode, and the frequency of a higher-order cavity mode, say, TE32 mode was also adjusted to the frequency of THG, the THG signal was more intensified than the single resonant condition on which only TM21 mode was tuned in to the fundamental frequency. What’s more, when the two cavity modes involved, e.g., TM21 and TM23 mode, have the same multipolar moment (as indicated by the first number), the final THG efficiency will be enhanced up to 3 magnitudes, much more than the enhancement in situations where two cavity modes have different multipolar moment, for instance, TM21 and TM13 mode. It can be believed that this phenomenon is important and will open new opportunities in nonlinear optics.
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