修车大队一品楼qm论坛51一品茶楼论坛,栖凤楼品茶全国楼凤app软件 ,栖凤阁全国论坛入口,广州百花丛bhc论坛杭州百花坊妃子阁

oe1(光电查) - 科学论文

3 条数据
?? 中文（中国） ▾

  • Dynamically Steered Maser Action of Rydberg Excitons in Cu <sub/>2</sub> O

    摘要： The Rydberg excitons in Cu2O 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.

    关键词： Rydberg excitons,microwaves,maser

    更新于2025-09-23 15:22:29

  • : From quantum dots to bulk crystals and additional boundary conditions for Rydberg exciton-polaritons

    摘要： We propose schemes for calculation of optical functions of a semiconductor with Rydberg excitons for a wide interval of dimensions. We have started with a zero-dimensional structure (quantum dot), then going to one-dimensional (quantum wire), two-dimensional (quantum wells and wide quantum wells), and ?nally three-dimensional bulk crystals; our analytical ?ndings are illustrated numerically, showing an agreement with available experimental data. Calculations including exciton-polaritons are performed; the case of a large number of polariton branches is discussed, and obtained theoretical absorption spectra show good agreement with experimental data.

    关键词： quantum wells,bulk crystals,exciton-polaritons,quantum wires,Rydberg excitons,quantum dots

    更新于2025-09-23 15:21:01

  • Interaction of Rydberg excitons in cuprous oxide with phonons and photons: optical linewidth and polariton effect

    摘要： We demonstrate that the optical linewidth of Rydberg excitons in Cu2O can be completely explained by scattering with acoustical and optical phonons, whereby the dominant contributions stems from the non-polar optical 3G- and 5G- modes. The consequences for the observation of polariton effects are discussed. We find that an anti-crossing of photon and exciton dispersions exists only for states with main quantum numbers n > 28, so polariton effects do not play any role in the experiments reported up to now.

    关键词： polaritons,phonon scattering,Rydberg excitons,cuprous oxide

    更新于2025-09-23 15:21:01