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双Λ共振原子系统中两脉冲光束的同时慢光传输
  • ISSN号：1007-6654
  • 期刊名称：《量子光学学报》
  • 时间：0
  • 分类：O431[机械工程—光学工程;理学—光学;理学—物理]
  • 作者机构：[1]山西大学光电研究所,量子光学与光量子器件国家重点实验室,山西太原030006, [2]运城学院物理与电子工程系,山西运城044000
  • 相关基金：国家自然科学基金（批准号：11274210;61108003）;国家自然科学基金创新研究群体科学基金（批准号：61121064）; 高等学校博士学科点专项科研基金（批准号：20131401110013）
作者： 姜其畅[1,2], 刘超[1], 刘晋宏[1], 张俊香[1]
关键词： 群速度, 四波混频, 慢光, group velocity, four-wave mixing, slow light
中文摘要：

在热的铯原子汽室中,借助双Λ共振四波混频效应,实验研究了入射探针光脉冲和产生的共轭光脉冲的同时慢光传输特性。实验中首先将泵浦光锁定在铯原子D1线超精细跃迁F=4→F′=3上,将探针光调至超精细跃迁F=3→F′=3附近扫描,通过对探针光和共轭光增益特性的分析,给出获得最大增益所对应的最佳铯泡温度约110℃。最后,采用365ns高斯脉冲作为入射探针光脉冲,研究了探针光脉冲和共轭光脉冲的延迟时间与双光子失谐的关系。通过改变双光子失谐,探针光脉冲的延迟时间可以从40ns增加到343ns,相应的群速度从1 875km/s减小到219km/s;产生的共轭光脉冲的延迟时间可以从12ns增加到159ns,相应的群速度从6 250km/s减小到472km/s。

英文摘要：

The characteristics of simultaneous slow light propagation of the injected probe and generatedconjugate pulses were investigated experimentally in a double-lambda resonant atomic system. Firstly, thepump light was fixed on the hyperfine transition ofF=4→F′=3 and the probe light was scanned aroundthe transition of F=4→F′=3 of Cs D1 line. The 110 ℃ optimum temperature for the maximum gain isobtained by analyzing the gain properties of the probe and conjugate lights. Finally, the dependences ofdelay time of the probe and conjugate pulses on the two-photon detuning were studied with 365 ns injectedGaussian pulse. By adjusting the two-photon detuning, the delay time of the probe pulse can rise from 40ns to 343 ns, corresponding to the group velocity decrease from 1 875 km/s to 219 km/s. At the sametime, the delay time of the conjugate pulse can increase from 12 ns to 159 ns, corresponding to the groupvelocity decrease from 6 250 km/s to 472 km/s.

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期刊信息
  • 《量子光学学报》
  • 中国科技核心期刊
  • 主管单位:山西省科学技术协会
  • 主办单位:山西省物理学会
  • 主编：彭堃墀
  • 地址：山西坞城路92号太原山西大学光电研究所
  • 邮编：030006
  • 邮箱：qo@sxu.edu.cn
  • 电话：0351-7018917 7018853
  • 国际标准刊号：ISSN：1007-6654
  • 国内统一刊号：ISSN：14-1187/O4
  • 邮发代号:
  • 获奖情况:
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）
  • 被引量:1022