红外超连续辐射泵浦电光晶体产生的太赫兹辐射

刘雨熙; 周宇龙; 邵烁婷; 尉鹏飞; 梁奇锋; 王小同; 唐桧波; 况龙钰; 胡广月

doi:10.7498/aps.74.20250212

摘要

飞秒激光激发的太赫兹波在很多领域得到了广泛的应用. 本文演示了一种新的太赫兹辐射产生方式, 利用飞秒激光与透明固体介质作用产生的红外超连续辐射(>1 μm)泵浦太赫兹电光晶体, 产生了单周期、低频、宽带的太赫兹辐射. 飞秒激光电离介质过程会同时产生红外超连续辐射和太赫兹辐射, 如果产生的红外超连续辐射和太赫兹辐射一同进入电光晶体, 那么红外超连续辐射的存在会干扰原有太赫兹辐射的探测. 但通过窄带滤光片过滤出红外超连续辐射的特定成分, 可以用来测量电光晶体在红外波段的响应特征, 这为电光晶体的红外响应研究提供了新的思路.

关键词:

Abstract

Femtosecond laser excited terahertz waves have been widely used in various fields. Herein, we demonstrate a novel method to generate terahertz radiation from a terahertz electro-optic crystal excited by infrared supercontinuum radiation (wavelengths > 1 μm), which is produced via the interaction between a femtosecond laser and a transparent solid medium. This approach yields single-cycle, low-frequency, broadband terahertz radiation. In the femtosecond laser-induced ionization process in a medium, both infrared supercontinuum radiation and terahertz radiation are simultaneously generated. When the resulting infrared supercontinuum radiation and terahertz radiation concurrently enter into an electro-optic crystal, the presence of the infrared supercontinuum radiation may interfere with the detection of the intrinsic terahertz radiation. By filtering the infrared supercontinuum radiation with narrowband filters, a new strategy is proposed for investigating the response of the electro-optic crystal in infrared spectral region.

Keywords:

作者及机构信息

1.
中国科学技术大学核科学技术学院, 中国科学院近地空间环境重点实验室, 合肥　230026

2.
绍兴文理学院数理信息学院, 绍兴　312000

3.
哈尔滨工业大学物理学院, 哈尔滨　150001

4.
中国工程物理研究院激光聚变研究中心, 绵阳　621900

5.
中国科学院上海光学精密机械研究所, 中国科学院超强激光科学卓越创新中心, 上海　201800

通信作者: 尉鹏飞, pfwei@usx.edu.cn ; 唐桧波, tanghb@ustc.edu.cn ; 况龙钰, kuangly0402@sina.com ; 胡广月, gyhu@ustc.edu.cn

基金项目: 国家自然科学基金(批准号: 12175230, 11775223, 12205298)、中国科学院非共识和颠覆性项目(批准号: CX2140000042)和统筹推进世界一流大学和一流学科建设专项资金(批准号: YD2140002006)资助的课题.

Authors and contacts

1.
Key Laboratory of Geospace Environment of Chinese Academy of Sciences, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China

2.
College of Mathematics Physics and Information, Shaoxing University, Shaoxing 312000, China

3.
School of Physics, Harbin Institute of Technology, Harbin 150001, China

4.
Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China

5.
Center for Excellence in Ultra-intense Laser Science (CEULS), Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

Corresponding author: WEI Pengfei, pfwei@usx.edu.cn ; TANG Huibo, tanghb@ustc.edu.cn ; KUANG Longyu, kuangly0402@sina.com ; HU Guangyue, gyhu@ustc.edu.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 12175230, 11775223, 12205298), the Chinese Academy of Sciences Program for Non-Consensus and Disruptive Research (Grant No. CX2140000042), and the “USTC Research Funds of the Double First-Class Initiative” (Grant No. YD2140002006).

文章全文

参考文献

[1]	Dhillon S S, Vitiello M S, Linfield E H, Davies A G, Hoffmann M C, Booske J, Paoloni C, Gensch M, Weightman P, Williams G P, Castro-Camus E, Cumming D R S, Simoens F, Escorcia-Carranza I, Grant J, Lucyszyn S, Kuwata-Gonokami M, Konishi K, Koch M, Schmuttenmaer C A, Cocker T L, Huber R, Markelz A G, Taylor Z D, Wallace V P, Zeitler J A, Sibik J, Korter T M, Ellison B, Rea S, Goldsmith P, Cooper K B, Appleby R, Pardo D, Huggard P G, Krozer V, Shams H, Fice M, Renaud C, Seeds A, Stöhr A, Naftaly M, Ridler N, Clarke R, Cunningham J E, Johnston M B 2017 J. Phys. D: Appl. Phys. 50 043001 Google Scholar
[2]	Ferguson B, Zhang X C 2002 Nat. Mater. 1 26 Google Scholar
[3]	Liu K, Xu J Z, Yuan T, Zhang X C 2006 Phys. Rev. B 73 155330 Google Scholar
[4]	Rice A, Jin Y, Ma X F, Zhang X C, Bliss D, Larkin J, Alexander M 1994 Appl. Phys. Lett. 64 1324 Google Scholar
[5]	Wu X J, Kong D Y, Hao S B, Zeng Y S, Yu X Q, Zhang B L, Dai M C, Liu S J, Wang J Q, Ren Z J, Chen S, Sang J H, Wang K, Zhang D D, Liu Z K, Gui J Y, Yang X J, Xu Y, Leng Y X, Li Y T, Song L W, Tian Y, Li R X 2023 Adv. Mater. 35 2208947 Google Scholar
[6]	Tzortzakis S, Méchain G, Patalano G, André Y-B, Prade B, Franco M, Mysyrowicz A, Munier J-M, Gheudin M, Beaudin G, Encrenaz P 2002 Opt. Lett. 27 1944 Google Scholar
[7]	Jin Q, Williams K, Dai J M, Zhang X C 2017 Appl. Phys. Lett. 111 071103 Google Scholar
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[9]	Liao G Q, Liu H, Scott G G, Zhang Y H, Zhu B J, Zhang Z, Li Y T, Armstrong C, Zemaityte E, Bradford P, Rusby D R, Neely D, Huggard P, McKenna P, Brenner C, Woolsey N, Wang W M, Sheng Z M, Zhang J 2020 Phys. Rev. X 10 031062 Google Scholar
[10]	Tan Y, Zhao H, Wang W M, Zhang R, Zhao Y J, Zhang C L, Zhang X C, Zhang L L 2022 Phys. Rev. Lett. 128 093902 Google Scholar
[11]	Chen Y X, He Y H, Dai C Y, La X Y, Tian Z, Dai J M 2024 Chin. Opt. Lett. 22 073701 Google Scholar
[12]	Ding J, Meng Q H, Shen Y, Ding C X, Su B, Cui H L, Zhang C L 2023 Chin. Phys. B 32 048702 Google Scholar
[13]	Wu Q, Litz M, Zhang X C 1996 Appl. Phys. Lett. 68 2924 Google Scholar
[14]	Jin Q, Dai J M, E Y W, Zhang X C 2018 Appl. Phys. Lett. 113 261101 Google Scholar
[15]	Jin Q, E Y W, Gao S H, Zhang X C 2020 Adv. Photon. 2 015001
[16]	Zafar S, Li D W, Camino A, Chang J W, Hao Z Q 2022 Chin. Phys. B 31 084209 Google Scholar
[17]	Jiang Z P, Sun F G, Chen Q, Zhang X C 1999 Appl. Phys. Lett. 74 1191 Google Scholar
[18]	Ojo M E, Fauquet F, Mounaix P, Bigourd D 2023 Photonics 10 316 Google Scholar
[19]	Jiang Z, Zhang X C 1998 Appl. Phys. Lett. 72 1945 Google Scholar
[20]	Jiang Z, Sun F G, Zhang X C 1999 Opt. Lett. 24 1245 Google Scholar
[21]	Kim K Y, Yellampalle B, Rodriguez G, Averitt R D, Taylor A J, Glownia J H 2006 Appl. Phys. Lett. 88 041123 Google Scholar
[22]	Tian Z, Wang C L, Xing Q R, Gu J Q, Li Y F, He M X, Chai L, Wang Q Y, Zhang W L 2008 Appl. Phys. Lett. 92 041106 Google Scholar
[23]	Song Q, Chai L, Liu W N, Ma Q, Li Y F, Wang C Y, Hu M L 2019 Infrared Phys. Technol. 97 54 Google Scholar
[24]	van der Valk N C, Planken P C, Buijserd A N, Bakker H J 2005 J. Opt. Soc. Amer. B 22 1714 Google Scholar

施引文献

图 1 超连续辐射产生及太赫兹波探测实验布局　(a)单发电光采样实验装置示意图, ①光谱测量单元, ②能量测量单元, ③离焦量示意图; (b)THz-TDS系统实验装置示意图; (c)硅滤片在红外和太赫兹波段的透过率和反射率曲线; (d)低通滤片在红外和太赫兹波段的透过率曲线

Fig. 1. Experimental setup for generation of supercontinuum radiation and THz detection: (a) Schematic diagram of experimental setup of single-shot electro-optic, in which ① the spectral measurements unit, ②the energy measurement unit, and ③ the schematic diagram of the defocus amount; (b) schematic diagram of experimental setup of THz-TDS system; (c) transmission and reflectance curves of the silicon filter in the infrared and terahertz spectral regions; (d) transmission curve of the low-pass filter in the infrared and terahertz spectral regions.

下载: 全尺寸图片幻灯片

图 2 飞秒激光作用TPX产生的超连续谱　(a) TPX产生的超连续谱(蓝线)和激光光谱(黑色虚线); (b)经过高阻硅调制的红外超连续谱

Fig. 2. Supercontinuum produced by TPX with fs laser: (a) The supercontinuum generated by TPX (blue line) and the laser spectrum (black dashed line); (b) the infrared supercontinuum modulated by high-resistance silicon.

下载: 全尺寸图片幻灯片

图 3 红外超连续辐射能量随激光离焦量的变化

Fig. 3. Variation of infrared supercontinuum radiation intensity with laser defocus distance.

下载: 全尺寸图片幻灯片

图 4 红外超连续辐射泵浦ZnTe晶体产生的太赫兹辐射

Fig. 4. THz radiation generated from ZnTe crystal pumped by infrared supercontinuum radiation.

下载: 全尺寸图片幻灯片

图 5 红外超连续辐射泵浦GaP晶体产生的太赫兹辐射, 黑线为不加太赫兹低通情况下的实验结果, 红线为放入太赫兹低通时的实验结果

Fig. 5. THz radiation generated from GaP crystal pumped by infrared supercontinuum radiation, the black line represents the experimental results obtained without the THz low-pass filter, whereas the red line represents the experimental results obtained with the THz low-pass filter in place.

下载: 全尺寸图片幻灯片

图 6 传统THz-TDS电光采样测量的太赫兹辐射, 分别使用了ZnTe和GaP晶体

Fig. 6. Electro-Optic sampling results of traditional THz-TDS, ZnTe, and GaP crystals were employed, respectively.

下载: 全尺寸图片幻灯片

图 7 1064 nm成分泵浦电光晶体产生THz辐射

Fig. 7. Terahertz radiation generated from an electro-optic crystal pumped by a 1064 nm component.

下载: 全尺寸图片幻灯片

图 8 红外超连续辐射泵浦ZnTe晶体和800 nm飞秒激光泵浦ZnTe晶体产生的太赫兹辐射

Fig. 8. THz radiation generated from ZnTe crystal pumped by infrared supercontinuum radiation and an 800 nm femtosecond laser.

下载: 全尺寸图片幻灯片

下载: 全尺寸图片幻灯片

map

[1]	Dhillon S S, Vitiello M S, Linfield E H, Davies A G, Hoffmann M C, Booske J, Paoloni C, Gensch M, Weightman P, Williams G P, Castro-Camus E, Cumming D R S, Simoens F, Escorcia-Carranza I, Grant J, Lucyszyn S, Kuwata-Gonokami M, Konishi K, Koch M, Schmuttenmaer C A, Cocker T L, Huber R, Markelz A G, Taylor Z D, Wallace V P, Zeitler J A, Sibik J, Korter T M, Ellison B, Rea S, Goldsmith P, Cooper K B, Appleby R, Pardo D, Huggard P G, Krozer V, Shams H, Fice M, Renaud C, Seeds A, Stöhr A, Naftaly M, Ridler N, Clarke R, Cunningham J E, Johnston M B 2017 J. Phys. D: Appl. Phys. 50 043001 Google Scholar
[2]	Ferguson B, Zhang X C 2002 Nat. Mater. 1 26 Google Scholar
[3]	Liu K, Xu J Z, Yuan T, Zhang X C 2006 Phys. Rev. B 73 155330 Google Scholar
[4]	Rice A, Jin Y, Ma X F, Zhang X C, Bliss D, Larkin J, Alexander M 1994 Appl. Phys. Lett. 64 1324 Google Scholar
[5]	Wu X J, Kong D Y, Hao S B, Zeng Y S, Yu X Q, Zhang B L, Dai M C, Liu S J, Wang J Q, Ren Z J, Chen S, Sang J H, Wang K, Zhang D D, Liu Z K, Gui J Y, Yang X J, Xu Y, Leng Y X, Li Y T, Song L W, Tian Y, Li R X 2023 Adv. Mater. 35 2208947 Google Scholar
[6]	Tzortzakis S, Méchain G, Patalano G, André Y-B, Prade B, Franco M, Mysyrowicz A, Munier J-M, Gheudin M, Beaudin G, Encrenaz P 2002 Opt. Lett. 27 1944 Google Scholar
[7]	Jin Q, Williams K, Dai J M, Zhang X C 2017 Appl. Phys. Lett. 111 071103 Google Scholar
[8]	Dey I, Jana K, Fedorov V Y, Koulouklidis A D, Mondal A, Shaikh M, Sarkar D, Lad A D, Tzortzakis S, Couairon A, Kumar G R 2017 Nat. Commun. 8 1184 Google Scholar
[9]	Liao G Q, Liu H, Scott G G, Zhang Y H, Zhu B J, Zhang Z, Li Y T, Armstrong C, Zemaityte E, Bradford P, Rusby D R, Neely D, Huggard P, McKenna P, Brenner C, Woolsey N, Wang W M, Sheng Z M, Zhang J 2020 Phys. Rev. X 10 031062 Google Scholar
[10]	Tan Y, Zhao H, Wang W M, Zhang R, Zhao Y J, Zhang C L, Zhang X C, Zhang L L 2022 Phys. Rev. Lett. 128 093902 Google Scholar
[11]	Chen Y X, He Y H, Dai C Y, La X Y, Tian Z, Dai J M 2024 Chin. Opt. Lett. 22 073701 Google Scholar
[12]	Ding J, Meng Q H, Shen Y, Ding C X, Su B, Cui H L, Zhang C L 2023 Chin. Phys. B 32 048702 Google Scholar
[13]	Wu Q, Litz M, Zhang X C 1996 Appl. Phys. Lett. 68 2924 Google Scholar
[14]	Jin Q, Dai J M, E Y W, Zhang X C 2018 Appl. Phys. Lett. 113 261101 Google Scholar
[15]	Jin Q, E Y W, Gao S H, Zhang X C 2020 Adv. Photon. 2 015001
[16]	Zafar S, Li D W, Camino A, Chang J W, Hao Z Q 2022 Chin. Phys. B 31 084209 Google Scholar
[17]	Jiang Z P, Sun F G, Chen Q, Zhang X C 1999 Appl. Phys. Lett. 74 1191 Google Scholar
[18]	Ojo M E, Fauquet F, Mounaix P, Bigourd D 2023 Photonics 10 316 Google Scholar
[19]	Jiang Z, Zhang X C 1998 Appl. Phys. Lett. 72 1945 Google Scholar
[20]	Jiang Z, Sun F G, Zhang X C 1999 Opt. Lett. 24 1245 Google Scholar
[21]	Kim K Y, Yellampalle B, Rodriguez G, Averitt R D, Taylor A J, Glownia J H 2006 Appl. Phys. Lett. 88 041123 Google Scholar
[22]	Tian Z, Wang C L, Xing Q R, Gu J Q, Li Y F, He M X, Chai L, Wang Q Y, Zhang W L 2008 Appl. Phys. Lett. 92 041106 Google Scholar
[23]	Song Q, Chai L, Liu W N, Ma Q, Li Y F, Wang C Y, Hu M L 2019 Infrared Phys. Technol. 97 54 Google Scholar
[24]	van der Valk N C, Planken P C, Buijserd A N, Bakker H J 2005 J. Opt. Soc. Amer. B 22 1714 Google Scholar

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红外超连续辐射泵浦电光晶体产生的太赫兹辐射