Inversionless amplification of coherent terahertz radiation | Zendy

C. Janke | Zendy; P. Haring Bolívar | Zendy; A. Bartels | Zendy; H. Kurz | Zendy; H. Künzel | Zendy

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Inversionless amplification of coherent terahertz radiation

Author(s) -

C. Janke,

P. Haring Bolívar,

A. Bartels,

H. Kurz,

H. Künzel

Publication year - 2003

Publication title -

physical review. b, condensed matter

Language(s) - English

Resource type - Journals

eISSN - 1095-3795

pISSN - 0163-1829

DOI - 10.1103/physrevb.67.155206

Subject(s) - terahertz radiation , common emitter , physics , optics , terahertz spectroscopy and technology , terahertz gap , semiconductor , radiation , optoelectronics , laser , far infrared laser , terahertz metamaterials

We experimentally demonstrate inversionless amplification of the emission from electronic transitions in a solid state system inside a cavity. A semiconductor-based terahertz (THz) emitter is exposed to a coherent, phasematched THz background field during the emission process leading to an increase in the overall emitted THz power of more than one order of magnitude. The experimental concept and results are discussed within a three-level model and an extended density matrix approach

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