西北师范大学学报（自然科学版）2025，Vol.61Issue(4)：107-114,8.DOI:10.16783/j.cnki.nwnuz.2025.04.013
电磁诱导透明和双共振光泵浦透明信号的辨别与优化
Identification and optimization of electromagnetically induced transparency and double resonance optically pumped transparency signals
摘要
Abstract
In an open system of 87Rb atoms,the distinction between electromagnetically induced transparency(EIT)and double resonance optical pumping(DROP)transparency signals was investigated,and the conditions for obtaining independent spectral lines were explored.By adjusting the intensity of the probe and coupling lasers as well as the vapor cell temperature,the transparency spectra of EIT and DROP were observed.The spectral characteristics of the two-photon absorption peak at resonance and the spectral lines blue-shifted to large detuning were used to distinguish EIT from DROP and optimize the conditions for independent spectral lines.It was found that under weak probe light conditions,increasing the coupling intensity was conducive to the formation of the EIT spectrum,while increasing the probe light intensity inhibits quantum destructive interference and promotes incoherent pumping radiation,favoring DROP spectrum formation.An increase in temperature does not affect the proportion of coherent and incoherent radiation but increases the transparency amplitudes of both EIT and DROP.Theoretical calculations agreed with experimental results,providing new insights into distinguishing and controlling the EIT and DROP phenomena.关键词
电磁诱导透明/双共振光泵浦/直接双光子跃迁/量子光学Key words
electromagnetically induced transparency/double resonance optically pumped transparency/direct two-photon absorption/quantum optics分类
数理科学引用本文复制引用
黄小芮,张丹丹,白禧玺,王晨洁,严祥安..电磁诱导透明和双共振光泵浦透明信号的辨别与优化[J].西北师范大学学报（自然科学版）,2025,61(4):107-114,8.基金项目
国家自然科学基金资助项目(U2330109,61405151) （U2330109,61405151）
