首页 > 论文 > 中国激光 > 44卷 > 1期(pp:114001--1)

太赫兹脉冲的正交平衡单次电光测量

Crossed and Balanced Single-Shot Electro-Optic Measurement for Terahertz Pulses

  • 摘要
  • 论文信息
  • 参考文献
  • 被引情况
  • PDF全文
分享:

摘要

提出了一种基于波长编码的超短太赫兹(THz)脉冲单次探测方法。该方法将新型正交平衡电光取样技术和波长编码技术结合起来, 同时拥有这两种方法的优点:能对超快太赫兹脉冲实现高调制度和高信噪比的单次实时测量。为了实现单次测量, 采用线性啁啾激光脉冲作为探测光, 将太赫兹电场对探测脉冲的时域调制映射到频域, 并用光谱仪对频域信息进行单次采集。在电光取样技术方面, 采用正交平衡探测取代传统波长编码单次测量, 通过设置两臂静态偏置相位, 使它们大小相等、符号相反, 实现对称推挽式调制, 从而有效提高近0°偏置点附近的探测线性度和调制深度, 并有效抑制动态噪声。

Abstract

A method for single-shot detection of ultrashort terahertz (THz) pulse based on wavelength coding is proposed. This method combines the new crossed and balanced electro-optic sampling technology and the wavelength coding technology, which has the advantages of both of them: it realizes single-shot real-time measurement for ultrafast THz pulse with high modulation depth and high signal-noise ratio. In order to achieve single-shot measurement, linear chirped laser pulses are used as the probe laser to map the temporal modulation of THz wave to the frequency domain, and the information of which is singly-acquired by spectrometers. In the aspect of electro-optic sampling technique, instead of the traditional wavelength coding single-shot measurement method, we use a novel crossed and balanced method. By setting two optical paths with a pair of equal and opposite static bias phases, the symmetrical push-pull modulation is achieved. The detecting linearity and modulation depth near 0° optical bias can be improved effectively, and the dynamical noise is suppressed.

投稿润色
补充资料

中图分类号:O433

DOI:10.3788/cjl201744.0114001

所属栏目:太赫兹技术

基金项目:国家自然科学基金(61275101,61490710, 6157030930, 61405119)、深圳市科技计划(JCYJ20140418181958481, JCYJ20150324141711651, JCYJ20150525092941064)

收稿日期:2016-09-12

修改稿日期:2016-10-17

网络出版日期:--

作者单位    点击查看

林庆钢:深圳大学电子科学与技术学院深圳市微纳光子信息技术重点实验室, 广东 深圳 518060
潘新建:深圳大学电子科学与技术学院深圳市微纳光子信息技术重点实验室, 广东 深圳 518060
郑水钦:深圳大学电子科学与技术学院深圳市微纳光子信息技术重点实验室, 广东 深圳 518060
蔡懿:深圳大学电子科学与技术学院深圳市微纳光子信息技术重点实验室, 广东 深圳 518060
朱天龙:深圳大学电子科学与技术学院深圳市微纳光子信息技术重点实验室, 广东 深圳 518060
李景镇:深圳大学电子科学与技术学院深圳市微纳光子信息技术重点实验室, 广东 深圳 518060
徐世祥:深圳大学电子科学与技术学院深圳市微纳光子信息技术重点实验室, 广东 深圳 518060

联系人作者:林庆钢(lqgang37@163.com)

备注:林庆钢(1992-), 男, 硕士研究生, 主要从事超快非线性光学方面的研究。

【1】Calabrese C, Stingel A M, Shen L, et al. Ultrafast continuum mid-infrared spectroscopy: probing the entire vibrational spectrum in a single laser shot with femtosecond time resolution[J]. Optics Letters, 2012, 37(12): 2265-2267.

【2】Wu J B, Jin B B, Wan J, et al. Superconducting terahertz metamaterials mimicking electromagnetically induced transparency[J]. Applied Physics Letters, 2011, 99(16): 161113.

【3】Lffler T, Bauer T, Siebert K J, et al. Terahertz dark-field imaging of biomedical tissue[J]. Optics Express, 2001, 9(12): 616-621.

【4】Mashaghi A, Mashaghi S, Reviakine I, et al. Label-free characterization of biomembranes: from structure to dynamics[J]. Chemical Society Reviews, 2014, 43(3): 887-900.

【5】Camus E C, Palomar M, Covarrubias A A. Leaf water dynamics of arabidopsis thaliana monitored in-vivo using terahertz time-domain spectroscopy[J]. Scientific Reports, 2013, 3(10): 2910.

【6】Wu Q, Zhang X C. Terahertz broadband GaP electro-optic sensor[J]. Applied Physics Letters, 1997, 70(14): 1784-1786.

【7】Jiang Z P, Sun F G, Chen Q, et al. Electro-optic sampling near zero optical transmission point[J]. Applied Physics Letters, 1999, 74(9): 1191-1193.

【8】Lu Z G, Campbell P, Zhang X C. Free-space electro-optic sampling with a high-repetition-rate regenerative amplified laser[J]. Applied Physics Letters, 1997, 71(5): 593-595.

【9】Pan X J, Cai Y, Zheng X K, et al. Modified THz electro-optic sampling for high optical modulation depth, large dynamical range, and low background noises[J]. Optics Letters, 2014, 39(13): 3778-2781.

【10】Xu S X, Cai H. A theoretical and experimental research on terahertz electro-optic sampling at near-zero optical transmission point[J]. Chinese Physics Letters, 2008, 25(1): 152-155.

【11】Matlis N H, Plateau G R, Tilborg J V, et al. Single-shot spatiotemporal measurements of ultrashort THz waveforms using temporal electric-field cross correlation[J]. Optics Letters, 2011, 28(1): 23-27.

【12】Kim K Y, Yellampalle B, Taylor A J, et al. Single-shot terahertz pulse characterization via two-dimensional electro-optic imaging with dual echelons[J]. Optics Letters, 2007, 32(14): 1968-1970.

【13】Shan J, Weling A S, Knoesel E, et al. Single-shot measurement of terahertz electromagnetic pulses by use of electro-optic sampling[J]. Optics Letters, 2000, 25(6): 426-428.

【14】Jiang Z P, Zhang X C. Electro-optic measurement of THz field pulses with a chirped opticalbeam[J]. Applied Physics Letters, 1998, 72(16): 1945-1947.

【15】Jiang Z P, Zhang X C. Single-shot spatiotemporal terahertz field imaging[J]. Optics Letters, 1998, 23(14): 1114-1116.

【16】Hebling J, Almási G, Kozma I Z, et al. Velocity matching by pulse front tilting for large-area THz-pulse generation[J]. Optic Express, 2002, 10(21): 1161-1166.

【17】Yeh K L, Hoffmann M C, Hebling J, et al. Generation of 10 μJ ultrashort terahertz pulse by optical rectification[J]. Applied Physics Letters, 2007, 90(17): 171121.

【18】Hirori H, Doi A, Blanchard F, et al. Single-cycle terahertz pulses with amplitudes exceeding 1 MV/cm generated by optical rectification in LiNbO3[J]. Applied Physics Letters, 2011, 98(9): 091106.

【19】Fülp J A, Pálfalvi L, Almási G, et al. Design of high-energy terahertz sources based on optical rectification[J]. Optics Express, 2010, 18(12): 12311-12327.

引用该论文

Lin Qinggang,Pan Xinjian,Zheng Shuiqin,Cai Yi,Zhu Tianlong,Li Jingzhen,Xu Shixiang. Crossed and Balanced Single-Shot Electro-Optic Measurement for Terahertz Pulses[J]. Chinese Journal of Lasers, 2017, 44(1): 0114001

林庆钢,潘新建,郑水钦,蔡懿,朱天龙,李景镇,徐世祥. 太赫兹脉冲的正交平衡单次电光测量[J]. 中国激光, 2017, 44(1): 0114001

您的浏览器不支持PDF插件,请使用最新的(Chrome/Fire Fox等)浏览器.或者您还可以点击此处下载该论文PDF