Pump-induced exceptional points in lasers

M. Liertzer, Li Ge, A. Cerjan, A. D. Stone, H. E. Türeci, S. Rotter

Research output: Contribution to journalArticlepeer-review

394 Scopus citations


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.

Original languageEnglish (US)
Article number173901
JournalPhysical review letters
Issue number17
StatePublished - Apr 24 2012

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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