The cascade of resonant PT-symmetric topological structures is shown to emit laser light with a frequency comb spectrum. We consider optically active topological lattices supporting edge modes at regularly spaced frequencies. When the amplified resonances in the PT-broken regime match the edge modes of the topological gratings, we predict the emission of discrete laser lines. A proper design enables the engineering of the spectral features for specific applications. Topological protection makes the system very well suited for a novel generation of compact frequency comb emitters for spectroscopy, metrology, and quantum information.

Topological cascade laser for frequency comb generation in PT-symmetric structures / Pilozzi, Laura; Conti, Claudio. - In: OPTICS LETTERS. - ISSN 1539-4794. - STAMPA. - 42:24(2017), pp. 5174-5177. [10.1364/OL.42.005174]

Topological cascade laser for frequency comb generation in PT-symmetric structures

Conti, Claudio
2017

Abstract

The cascade of resonant PT-symmetric topological structures is shown to emit laser light with a frequency comb spectrum. We consider optically active topological lattices supporting edge modes at regularly spaced frequencies. When the amplified resonances in the PT-broken regime match the edge modes of the topological gratings, we predict the emission of discrete laser lines. A proper design enables the engineering of the spectral features for specific applications. Topological protection makes the system very well suited for a novel generation of compact frequency comb emitters for spectroscopy, metrology, and quantum information.
2017
non-hermitian hamiltonians; parity-time symmetry; insulators; solitons; optics; states
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Topological cascade laser for frequency comb generation in PT-symmetric structures / Pilozzi, Laura; Conti, Claudio. - In: OPTICS LETTERS. - ISSN 1539-4794. - STAMPA. - 42:24(2017), pp. 5174-5177. [10.1364/OL.42.005174]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1039755
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