Seminar by Prof. Tanabe 'Optical nonlinear control at a very low power in ultrahigh-Q microcavity systems'

Speaker:
Dr. Takasumi Tanabe, Associate Professor, Keio University, Japan

Seminar Title:
Optical nonlinear control at a very low power in ultrahigh-Q microcavity systems

Abstract:
Ultrahigh-Q microcavities are attracting attention because they enable strong interaction between light and matter.   Among various microcavities, photonic crystal nanocavity and toroid microcavity exhibit the highest Q/V, where V is the mode volume of the cavity.
In the first half of my talk, I will present the design on high-Q photonic crystal nanocavity [1] and discuss various applications such as all-optical switch [2], all-silicon receiver [3], and adiabatic wavelength converter [4].
In the second half of my talk, I will share some of our recent results on high-Q toroidal microcavity system [5].  I will discuss on the method on how we can achieve Kerr bistable memory [6].  I also show experimental results on detection of contamination in pure water for optofluidics applications [7].

[1] T. Tanabe, et al., Nature Photon. 1, 49 (2007) [2] K. Nozaki, T. Tanabe, et al., Nature Photon. 4, 477 (2010) [4] T. Tanabe, et al., Appl. Phys. Lett. 96, 101103 (2010).
[3] T. Tanabe, et al., Opt. Lett. 35, 3895 (2010).
[5] T. Kato, et al., Appl. Phys. Lett. 101, 121101 (2012).
[6] W. Yoshiki and T. Tanabe, J. Opt. Soc. Amer. B 29, 3335 (2012).
[7] J. Nishimura and T. Tanabe, CLEO/Europe-IQEC 2013, CH-3.3 WED, May. 15. 2013, Munchen.