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Dynamically Steered Maser Action of Rydberg Excitons in Cu 2 O
Author(s) -
Ziemkiewicz David,
ZielińskaRaczyńska Sylwia
Publication year - 2019
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201800503
Subject(s) - maser , exciton , excited state , population inversion , rydberg formula , atomic physics , microwave , physics , population , rydberg matter , stark effect , condensed matter physics , electric field , optics , quantum mechanics , ion , laser , demography , sociology , ionization
The Rydberg excitons in Cu 2 O are a promising candidate for realization of solid state maser. The highly excited states, unique to this crystal, provide the necessary energy level transitions for emission of microwaves. The achievement of population inversion is facilitated by exceptionally long lifetimes of excitons and their strong coupling to external field. Moreover, due to the strong Stark shift of excitonic energy levels, one can tune the emission wavelength on demand.