Authors
M Liertzer, Li Ge, A Cerjan, AD Stone, HE Türeci, S Rotter
Publication date
2012/4/24
Journal
Physical Review Letters
Volume
108
Issue
17
Pages
173901
Publisher
American Physical Society
Description
We demonstrate that the above-threshold behavior of a laser can be strongly affected by exceptional points which are induced by pumping the laser nonuniformly. At these singularities, the eigenstates of the non-Hermitian operator which describes the lasing modes coalesce. In their vicinity, the laser may turn off even when the overall pump power deposited in the system is increased. Such signatures of a pump-induced exceptional point can be experimentally probed with coupled ridge or microdisk lasers.
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Scholar articles
M Liertzer, L Ge, A Cerjan, AD Stone, HE Türeci… - Physical Review Letters, 2012