Improving the intensity and efficiency of compressed echo in rare-earth-ion-doped crystal

doi:10.1088/1674-1056/25/7/070302

中国物理B ›› 2016, Vol. 25 ›› Issue (7): 70302-070302.doi: 10.1088/1674-1056/25/7/070302

Improving the intensity and efficiency of compressed echo in rare-earth-ion-doped crystal

Xiu-Rong Ma(马秀荣), Yu-Qing Liang(梁裕卿), Song Wang(王松), Shuang-Gen Zhang(张双根), Yun-Long Shan(单云龙)

1 Department of Computer and Communication Engineering, Tianjin University of Technology, Tianjin 300384, China;
2 Engineering Research Center of Communication Devices and Technology, Ministry of Education; Tianjin Key Laboratory of Film Electronic and Communication Devices, Tianjin 300384, China

收稿日期:2015-10-11 修回日期:2016-01-22 出版日期:2016-07-05 发布日期:2016-07-05
通讯作者: Yu-Qing Liang E-mail:airforce094@sina.com
基金资助:
Project supported by Special Funds for Scientific and Technological Innovation Projects in Tianjin, China (Grant No. 10FDZDGX00400) and the Tianjin Research Program of Application Foundation and Advanced Technology, China (Grant No. 15JCQNJC01100).

Improving the intensity and efficiency of compressed echo in rare-earth-ion-doped crystal

Xiu-Rong Ma(马秀荣)^1,2, Yu-Qing Liang(梁裕卿)¹, Song Wang(王松)¹, Shuang-Gen Zhang(张双根)^1,2, Yun-Long Shan(单云龙)¹

1 Department of Computer and Communication Engineering, Tianjin University of Technology, Tianjin 300384, China;
2 Engineering Research Center of Communication Devices and Technology, Ministry of Education; Tianjin Key Laboratory of Film Electronic and Communication Devices, Tianjin 300384, China

Received:2015-10-11 Revised:2016-01-22 Online:2016-07-05 Published:2016-07-05
Contact: Yu-Qing Liang E-mail:airforce094@sina.com
Supported by:
Project supported by Special Funds for Scientific and Technological Innovation Projects in Tianjin, China (Grant No. 10FDZDGX00400) and the Tianjin Research Program of Application Foundation and Advanced Technology, China (Grant No. 15JCQNJC01100).

摘要/Abstract

摘要： We investigate the intensity and efficiency of a compressed echo, which is important in arbitrary waveform generation (AWG). A new model of compressed echo is proposed based on the optical Bloch equations, which exposes much more detailed parameters than the conventional model, such as the time delay of the chirp lasers, the nature of the rare-earth-ion-doped crystal, etc. According to the novel model of compressed echo, we find that reducing the time delay of the chirp lasers and scanning the lasers around the center frequency of the inhomogeneously broadened spectrum, while utilizing a crystal with larger coherence time and excitation lifetime can improve the compressed echo's intensity and efficiency. The theoretical analysis is validated by numerical simulations.

关键词: intensity and efficiency, compressed echo, arbitrary waveform generation, optical Bloch equations

Abstract: We investigate the intensity and efficiency of a compressed echo, which is important in arbitrary waveform generation (AWG). A new model of compressed echo is proposed based on the optical Bloch equations, which exposes much more detailed parameters than the conventional model, such as the time delay of the chirp lasers, the nature of the rare-earth-ion-doped crystal, etc. According to the novel model of compressed echo, we find that reducing the time delay of the chirp lasers and scanning the lasers around the center frequency of the inhomogeneously broadened spectrum, while utilizing a crystal with larger coherence time and excitation lifetime can improve the compressed echo's intensity and efficiency. The theoretical analysis is validated by numerical simulations.

Key words: intensity and efficiency, compressed echo, arbitrary waveform generation, optical Bloch equations

中图分类号: (Semiclassical theories and applications)

03.65.Sq

14.70.Bh (Photons) 34.80.Pa (Coherence and correlation) 42.50.Md (Optical transient phenomena: quantum beats, photon echo, free-induction decay, dephasings and revivals, optical nutation, and self-induced transparency)

马秀荣, 梁裕卿, 王松, 张双根, 单云龙. Improving the intensity and efficiency of compressed echo in rare-earth-ion-doped crystal[J]. 中国物理B, 2016, 25(7): 70302-070302.

Xiu-Rong Ma(马秀荣), Yu-Qing Liang(梁裕卿), Song Wang(王松), Shuang-Gen Zhang(张双根), Yun-Long Shan(单云龙). Improving the intensity and efficiency of compressed echo in rare-earth-ion-doped crystal[J]. Chin. Phys. B, 2016, 25(7): 70302-070302.

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Improving the intensity and efficiency of compressed echo in rare-earth-ion-doped crystal

Improving the intensity and efficiency of compressed echo in rare-earth-ion-doped crystal

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