| 光谱学与光谱分析 |
|
|
|
|
|
| Reseach on THz Time Domain Spectrum of Photo-Induced Insulator-Metal Phase Transition of VO2 Films |
| WANG Chang-lei1, WU Shuai1, LI Yan-feng2, LIU Bo-wen2, HU Ming-lie2, CHAI Lu2, XING Qi-rong2, WANG Qing-yue2 |
1. Microwave Photonics Research Center, East China Research Institute of Electronic Engineering, Hefei 230088, China
2. Ultrafast Laser Laboratory, Key Laboratory of Opto-electronic Information Technology (Ministry of Education), College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China |
|
|
|
|
Abstract Vanadium dioxide(VO2) film will be phase-transitioned from insulator into metal, accompanied with dramatic change on conductivity, which is named as photo-induced insulator-metal phase transition. Such phase transition of VO2 film has important application potentials in modulators or other functional devices for terahertz waves. In this paper, the transmission spectrum variations before and after the photo-induced insulator-metal phase transition of vanadium dioxide film are investigated, and the phase transition properties in terahertz(THz) region are analyzed. In the experiment, the phase transition of the VO2 film was induced by a continuous wave(CW) laser source and a femtosecond(fs) laser source, respectively. Obvious changes on the THz waveforms were observed for the both mentioned means of excitation, and the amplitude attenuation, as well as the signal distortion, was intensified with the increase of the impinging optical power. The fast Fourier transform(FFT) spectra of the transmitted THz time-domain signals were analyzed and it was found that the amplitude of the transmitted spectrum decreased synchronously with the increase of the optical power, accompanied with deformation of the spectrum line shape at the same time. The reason was that the macroscopic dielectric properties of the VO2 film approached gradually to that of a metal as laser power was increased. A parameter, transmission modulation function, was defined in the paper as the amplitude difference between the transmission spectra of the VO2 film before and after the laser excitation, to describe the dispersivity of the photo-induced phase transition more clearly. From the curve of the transmission modulation function, strong frequency-dependent properties at THz frequencies were found to vary regularly with the incident light power. After furthermore comparison, it was found that, though the insulator-metal phase transition could be trigged by both CW laser source and fs laser source, the corresponding impinging optical power values were obviously alternative for the equivalent transmission modulation function. At the end of the paper, the difference of the phase transition efficiency between the two excitation methods was analyzed and discussed.
|
|
Received: 2014-11-03
Accepted: 2015-02-05
|
|
|
|
Corresponding Authors:
WANG Chang-lei
E-mail: wangchanglei@tju.edu.cn
|
|
[1] de Maagt P. Terahertz Applications and Technology. Microwave Technology and Computational Electromagnetics, ICMTCE. International Coference on, 2009. 1378.
[2] Wararu Momose, Hiroyuki Yoshino, Yoshifumi Katakawa, et al. Results in Pharma Sciences, 2012, 2: 29.
[3] Morin F J. Physical Review Letters，1959，3: 34.
[4] Kübler C, Ehrke H, R Huber R, et al. A Leitenstorfer Physical Review Letters，2007, 99(11): 116401.
[5] Sven Westman，Ingvar Lindqvist，Berndt Sparrman. Acta Chemica Scandinavica，1998, 15（01）：217.
[6] QIU Dong-hong, WEN Qu-ye, YANG Qing-hui, et al(邱东鸿, 文岖业, 杨青慧, 等). Acta Physica Sinica（物理学报）, 2013, (21): 217201.
[7] Huang Zhangli, Chen Sihai, Lü Chaohong, et al. Applied Physics Letters, 2012, 101(19): 191905.
[8] Vikhnin V S，Lysenko S，Rua A，et al. Journal of Physics Conference Series, 2005, 21(1): 44.
[9] Kumar R T R, Karunagaran B, Mangalaraj D, et al. Materials Research Bulletin，2003, 38(7): 1235.
[10] Henry H Mantscha, Dieter Naumannb. Journal of Molecular Structure, 2010, 964(1-3): 1.
[11] Bradley Ferguson, Zhang Xicheng. Nature Materials, 2002, 1: 26.
[12] WANG Chang-lei, TIAN Zhen, XING Qi-rong, et al(王昌雷，田 震，邢岐荣，等). Acta Physica Sinica（物理学报）, 2010, 59(11): 7857.
[13] Wang Changlei, Gu Jianqiang, Xing Qirong, et al. Chinese Optics Letters, 2011, 09(s1): s10207.
[14] CHEN Tao, HU Ming, LIANG Ji-ran, et al(陈 涛，胡 明，梁继然，等). Journal of Optoelectronics·Laser(光电子·激光)，2011, 22(9): 1349.
|
| [1] |
WAN Mei, ZHANG Jia-le, FANG Ji-yuan, LIU Jian-jun, HONG Zhi, DU Yong*. Terahertz Spectroscopy and DFT Calculations of Isonicotinamide-Glutaric Acid-Pyrazinamide Ternary Cocrystal[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3781-3787. |
| [2] |
LI Yang1, LI Xiao-qi1, YANG Jia-ying1, SUN Li-juan2, CHEN Yuan-yuan1, YU Le1, WU Jing-zhu1*. Visualisation of Starch Distribution in Corn Seeds Based on Terahertz Time-Domain Spectral Reflection Imaging Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(09): 2722-2728. |
| [3] |
ZHENG Zhi-jie1, LIN Zhen-heng1, 2*, XIE Hai-he2, NIE Yong-zhong3. The Method of Terahertz Spectral Classification and Identification for Engineering Plastics Based on Convolutional Neural Network[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(05): 1387-1393. |
| [4] |
WANG Yu-ye1, 2, LI Hai-bin1, 2, JIANG Bo-zhou1, 2, GE Mei-lan1, 2, CHEN Tu-nan3, FENG Hua3, WU Bin4ZHU Jun-feng4, XU De-gang1, 2, YAO Jian-quan1, 2. Terahertz Spectroscopic Early Diagnosis of Cerebral Ischemia in Rats[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(03): 788-794. |
| [5] |
CAO Yu-qi2, KANG Xu-sheng1, 2*, CHEN Piao-yun2, XIE Chen2, YU Jie2*, HUANG Ping-jie2, HOU Di-bo2, ZHANG Guang-xin2. Research on Discrimination Method of Absorption Peak in Terahertz
Regime[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(10): 3058-3062. |
| [6] |
YI Can-can1, 2, 3, 5*, TUO Shuai1, 2, 3, TU Shan1, 2, 3, 4, ZHANG Wen-tao5. UMAP-Assisted Fuzzy C-Clustering Method for Recognition of
Terahertz Spectrum[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(09): 2694-2701. |
| [7] |
LI Yan1, LIU Qi-hang2, 3, HUANG Wei1, DUAN Tao1, CHEN Zhao-xia1, HE Ming-xia2, 3, XIONG Yu1*. Terahertz Imaging Study of Dentin Caries[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(08): 2374-2379. |
| [8] |
MIAO Shu-guang1, SHAO Dan1*, LIU Zhong-yu2, 3, FAN Qiang1, LI Su-wen1, DING En-jie2, 3. Study on Coal-Rock Identification Method Based on Terahertz
Time-Domain Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(06): 1755-1760. |
| [9] |
CAO Yao-yao1, 2, 4, LI Xia1, BAI Jun-peng2, 4, XU Wei2, 4, NI Ying3*, DONG Chuang2, 4, ZHONG Hong-li5, LI Bin2, 4*. Study on Qualitative and Quantitative Detection of Pefloxacin and
Fleroxacin Veterinary Drugs Based on THz-TDS Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(06): 1798-1803. |
| [10] |
PAN Zhao1, LI Zong-liang1, ZHANG Zhen-wei2, WEN Yin-tang1, ZHANG Peng-yang1. Defect Detection and Analysis of Ceramic Fiber Composites Based on
THz-TDS Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(05): 1547-1552. |
| [11] |
ZHENG Zhuan-ping, LI Ai-dong, DONG Jun, ZHI Yan, GONG Jia-min. Terahertz Spectroscopic Investigation of Maleic Hydrazide Polymorphs[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(04): 1104-1108. |
| [12] |
LIU Su-ya-la-tu, WANG Zong-li, PANG Hui-zhong, TIAN Hu-qiang, WANG Xin *, WANG Jun-lin*. Terahertz Broadband Tunable Metamaterial Absorber Based on Graphene and Vanadium Dioxide[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(04): 1257-1263. |
| [13] |
WU Jing-zhu1, LI Xiao-qi1, SUN Li-juan2, LIU Cui-ling1, SUN Xiao-rong1, YU Le1. Advances in the Application of Terahertz Time-Domain Spectroscopy and Imaging Technology in Crop Quality Detection[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(02): 358-367. |
| [14] |
YAN Fang, ZHANG Jun-lin*, MAO Li-cheng, LIU Tong-hua, JIN Bo-yang. Research on Information Extraction Method of Carbohydrate Isomers Based on Terahertz Radiation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(01): 26-30. |
| [15] |
ZHENG Zhuan-ping, LI Ai-dong, LI Chun-yan, DONG Jun. Terahertz Time-Domain Spectral Study of Paracetamol[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(12): 3660-3664. |
|
|
|
|
