Non-reciprocal lasing action in topological cavities of arbitrary geometries

B. Bahari; A. Ndao; F. Valini; A. El Amili; Y. Fainman; B. Kante

doi:10.1117/12.2508102

4 March 2019 Non-reciprocal lasing action in topological cavities of arbitrary geometries

B. Bahari, A. Ndao, F. Valini, A. El Amili, Y. Fainman, B. Kante

Proceedings Volume 10927, Photonic and Phononic Properties of Engineered Nanostructures IX; 109270T (2019) https://doi.org/10.1117/12.2508102
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

Topological insulator is a material in which helical conducting states exist on the surface of the bulk insulator. These states can transport electrons or photons at the boundary without any back scattering, even in presence of obstacles enabling to make topological cavities with arbitrary geometries that light can propagate in one direction. Here, we present the demonstration of the first experimental non-reciprocal topological laser that operates at telecommunication wavelengths. The unidirectional stimulated emission from edge states is coupled to a selected waveguide output port with an isolation ratio of 11 dB. Topological cavities are made of hybrid photonic crystals (i.e., two different photonic crystals) with distinct topological phase invariants, which are bonded on a magnetic material of yttrium iron garnet to break the time-reversal symmetry. Our experimental demonstration, paves the way to develop complex nonreciprocal topological devices of arbitrary geometries for integrated and robust generation and transport of light in classical and quantum regimes.

Citation Download Citation

B. Bahari, A. Ndao, F. Valini, A. El Amili, Y. Fainman, and B. Kante "Non-reciprocal lasing action in topological cavities of arbitrary geometries ", Proc. SPIE 10927, Photonic and Phononic Properties of Engineered Nanostructures IX, 109270T (4 March 2019); https://doi.org/10.1117/12.2508102

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available