使用两个自由运行的超快振荡器对自旋噪声进行快速扫描。

Rapid scanning of spin noise with two free running ultrafast oscillators.

作者信息

Hübner Jens, Lonnemann Jan Gerrit, Zell Petrissa, Kuhn Hendrik, Berski Fabian, Oestreich Michael

机构信息

Institute for Solid State Physics, Leibniz University Hannover, Appelstr 2, 30167 Hannover, Germany.

出版信息

Opt Express. 2013 Mar 11;21(5):5872-8. doi: 10.1364/OE.21.005872.

DOI:10.1364/OE.21.005872

PMID:23482155

Abstract

We combine the scanning temporal ultrafast delay (STUD) technique with spin noise spectroscopy (SNS), which is based upon below band gap Faraday rotation to investigate the full temporal dynamics of stochastically orientated electron spins in slightly n-doped bulk GaAs. The application of STUD-SNS boosts the common technical bandwidth limitation of the electro-optic conversion in cw-SNS into the several hundred GHz regime. Numerical simulations highlight the strengths and examine the limitations of STUD-SNS.

摘要

我们将扫描时间超快延迟（STUD）技术与基于带隙以下法拉第旋转的自旋噪声光谱（SNS）相结合，以研究轻度n型掺杂体GaAs中随机取向电子自旋的完整时间动力学。STUD-SNS的应用将连续波SNS中电光转换的常见技术带宽限制提高到了数百GHz范围。数值模拟突出了STUD-SNS的优势并检验了其局限性。