Optical bistability in carbon nanotubes

Daniel Edward Milkie, Cristian Staii, Scott Paulson +3 more

Wei Liu, Hongjun Zhang, Hui Sun +2 more

We theoretically investigate steady-state behaviors of carbon nanotube quantum dots with spin-orbit coupling in a unidirectional ring cavity. Our results show that the spin-orbit coupling can induce optical bistability. In addition to the existence of spin-orbit coupling, switching optical bistability to optical multistability or vice versa is realized by adjusting detuning of the probe field. Our results show that the carbon nanotube quantum dots will possibly be a promising candidate for realizing all-optical switching.

Ghahraman Solookinejad, Mohammad Payravi, Masoud Jabbari +2 more

Abstract The optical bistability (OB) and multistability (OM) in one-dimensional photonic crystals doped with carbon-nanotube quantum dots (CNT QDs) is theoretically investigated. Our investigations show that due to spin–orbit coupling in CNT QDs the threshold of optical bistability can be adjusted. Also, the switching from OB to OM, or vice versa, can be achieved by controlling the transverse magnetic field. Our proposed model can be used as a suitable structure based on CNT QDs for realizing all-optical switching devices. Moreover, we realize that the controlling of OB and OM can be done without changing the thickness of the layers.

Nguyen Ba An, Nguyen Trung Dan

Y. Ron Shen

R. Bonifacio, L. A. Lugiato, M. Gronchi