L
Li Ge
Researcher at College of Staten Island
Publications - 158
Citations - 9158
Li Ge is an academic researcher from College of Staten Island. The author has contributed to research in topics: Lasing threshold & Laser. The author has an hindex of 38, co-authored 152 publications receiving 7272 citations. Previous affiliations of Li Ge include The Graduate Center, CUNY & City University of New York.
Papers
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Non-Hermitian photonics based on parity-time symmetry
Liang Feng,Ramy El-Ganainy,Li Ge +2 more
TL;DR: In this article, a review of parity-time symmetry in classical photonic systems is presented, along with some recent developments in non-Hermitian quantum symmetry paradigms for device functionalities.
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Coherent perfect absorbers: Time-reversed lasers
TL;DR: The effect may be demonstrated in a Si slab illuminated in the 500–900nm range and form a novel class of linear optical elements—absorptive interferometers—which may be useful for controlled optical energy transfer.
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PT-symmetry breaking and laser-absorber modes in optical scattering systems.
TL;DR: Using a scattering matrix formalism, the general scattering properties of optical structures that are symmetric under a combination of parity and time reversal (PT) are derived and a transition between PT-symmetric scattering eigenstates, which are norm preserving, and symmetry-broken pairs of eigenstate exhibiting net amplification and loss is demonstrated.
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Time-reversed lasing and interferometric control of absorption.
TL;DR: The device, termed a “coherent perfect absorber,” functions as an absorptive interferometer, with potential practical applications in integrated optics, and it is demonstrated that absorption can be reduced substantially by varying the relative phase of the incident fields.
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Pump-induced exceptional points in lasers.
Matthias Liertzer,Li Ge,Alexander Cerjan,A. D. Stone,Hakan E. Türeci,Hakan E. Türeci,Stefan Rotter +6 more
TL;DR: It is demonstrated that the above-threshold behavior of a laser can be strongly affected by exceptional points which are induced by pumping the laser nonuniformly.