Khadka Utsab, Zheng Huaibin, Xiao Min
Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701, USA.
Opt Express. 2012 Mar 12;20(6):6204-14. doi: 10.1364/OE.20.006204.
Four-wave-mixing (FWM) radiation is generated between the hyperfine structures of the 5D and 5P states in a thermally broadened rubidium atomic vapor using resonant atomic coherence. Background-free unidirectional signals having narrow spectral linewidths are isolated and experimentally studied in the frequency domain, and the effects of the driving beam parameters on the properties of the radiation are discussed. The radiation has several new properties compared to traditional FWM radiations generated between the 5P and 5S states. The high-resolution signals obtained in this method could make it favorable in spectroscopic procedures that rely on two-photon fluorescence.
利用共振原子相干性，在热展宽的铷原子蒸汽中的5D和5P态的超精细结构之间产生四波混频（FWM）辐射。在频域中分离并通过实验研究了具有窄光谱线宽的无背景单向信号，并讨论了驱动光束参数对辐射特性的影响。与在5P和5S态之间产生的传统FWM辐射相比，该辐射具有几个新特性。通过这种方法获得的高分辨率信号可能使其在依赖双光子荧光的光谱学过程中具有优势。
