Imperial College London

DrSang SoonOh

Faculty of Natural SciencesDepartment of Physics

Visiting Researcher



s.oh Website




901Blackett LaboratorySouth Kensington Campus






BibTex format

author = {Bittner, S and Guazzotti, S and Zeng, Y and Hu, X and Yilmaz, H and Kim, K and Oh, SS and Wang, QJ and Hess, O and Cao, H},
doi = {10.1126/science.aas9437},
journal = {Science},
pages = {1225--1230},
title = {Suppressing spatiotemporal lasing instabilities with wave-chaotic microcavities},
url = {},
volume = {361},
year = {2018}

RIS format (EndNote, RefMan)

AB - Spatiotemporal instabilities are widespread phenomena resulting from complexity and nonlinearity. In broad-area edge-emitting semiconductor lasers, the nonlinear interactions of multiple spatial modes with the active medium can result in filamentation and spatiotemporal chaos. These instabilities degrade the laser performance and are extremely challenging to control. We demonstrate a powerful approach to suppress spatiotemporal instabilities using wave-chaotic or disordered cavities. The interference of many propagating waves with random phases in such cavities disrupts the formation of self-organized structures such as filaments, resulting in stable lasing dynamics. Our method provides a general and robust scheme to prevent the formation and growth of nonlinear instabilities for a large variety of high-power lasers.
AU - Bittner,S
AU - Guazzotti,S
AU - Zeng,Y
AU - Hu,X
AU - Yilmaz,H
AU - Kim,K
AU - Oh,SS
AU - Wang,QJ
AU - Hess,O
AU - Cao,H
DO - 10.1126/science.aas9437
EP - 1230
PY - 2018///
SN - 0036-8075
SP - 1225
TI - Suppressing spatiotemporal lasing instabilities with wave-chaotic microcavities
T2 - Science
UR -
UR -
UR -
VL - 361
ER -