Study of backward terahertz radiation from intense picosecond laser–solid interactions using a multichannel calorimeter system

H. Liu; G.-Q. Liao; Y.-H. Zhang; B.-J. Zhu; Z. Zhang; Y.-T. Li; G. G. Scott; D. Rusby; C. Armstrong; E. Zemaityte; P. Bradford; N. Woolsey; P. Huggard; P. McKenna; D. Neely

doi:doi:10.1017/hpl.2018.60

High Power Laser Science and Engineering, 2019, 7 (1): 010000e6, Published Online: Mar. 26, 2019

Study of backward terahertz radiation from intense picosecond laser–solid interactions using a multichannel calorimeter system Download： 524次

H. Liu ^1,6G.-Q. Liao ²Y.-H. Zhang ^1,6B.-J. Zhu ^1,6Z. Zhang ¹Y.-T. Li ^1,6,7G. G. Scott ³D. Rusby ^3,4C. Armstrong ^3,4E. Zemaityte ^3,4P. Bradford ⁵N. Woolsey ⁵P. Huggard ⁸P. McKenna ⁴D. Neely ^3,4,†

Author Affiliations

¹ Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

² Key Laboratory for Laser Plasmas (MoE) and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China

³ Central Laser Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX, UK

⁴ Department of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG, UK

⁵ Department of Physics, York Plasma Institute, University of York, Heslington, York YO10 5DD, UK

⁶ School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

⁷ Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China

⁸ Space Science Department, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, UK

Figures & Tables

Fig. 1. Schematic layout of eight-channel THz calorimeter system.

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Fig. 2. Linear response of the detector to energy of near-infrared and THz wavelengths.

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Fig. 3. (a) Experimental setup of THz radiation spectrum measurement in ultra-intense laser–plasma interaction experiment. (b) Spectral sensitivity of the multichannel calorimeter system.

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Fig. 4. (a) The measured BTR energy from a $5~\unicode[STIX]{x03BC}\text{m}$ copper target as a function of the pump laser energy. (b) The measured BTR spectrum with driven laser energy on target varying from 14 J to 54 J from a $5~\unicode[STIX]{x03BC}\text{m}$ copper target.

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Fig. 5. (a) The measured BTR energy as a function of copper foil target thickness. (b) The measured BTR spectrum with copper foil target thickness varying from $1~\unicode[STIX]{x03BC}\text{m}$ to $100~\unicode[STIX]{x03BC}\text{m}$.

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Fig. 6. (a) The measured BTR energy from a $100~\unicode[STIX]{x03BC}\text{m}$ copper target as a function of delay between pre-pulse and main pulse. (b) The measured BTR spectrum from a $100~\unicode[STIX]{x03BC}\text{m}$ copper target with different delays between pre-pulse and main pulse, no pre-pulse, 400 ps and 1000 ps, respectively.

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Table1. Factors for the spectral sensitivity of the multichannel system.


1	0.5	0.8	0.8	0.114	0.95	0.66
2	1	0.8	0.8	0.134	0.78	0.80
3	1.5	0.8	0.8	0.097	0.85	0.85
4	3	0.81	0.81	0.134	0.80	0.91
5	6	0.7	0.7	0.157	0.90	0.95
6	10	0.6	0.6	0.134	0.90	0.95
7	20	0.69	0.69	0.114	0.88	0.95
8	—	—	—	0.116	—	—

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H. Liu, G.-Q. Liao, Y.-H. Zhang, B.-J. Zhu, Z. Zhang, Y.-T. Li, G. G. Scott, D. Rusby, C. Armstrong, E. Zemaityte, P. Bradford, N. Woolsey, P. Huggard, P. McKenna, D. Neely. Study of backward terahertz radiation from intense picosecond laser–solid interactions using a multichannel calorimeter system[J]. High Power Laser Science and Engineering, 2019, 7(1): 010000e6.

Study of backward terahertz radiation from intense picosecond laser–solid interactions using a multichannel calorimeter system Download： 524次

Fig. 1. Schematic layout of eight-channel THz calorimeter system.

Fig. 2. Linear response of the detector to energy of near-infrared and THz wavelengths.

Fig. 3. (a) Experimental setup of THz radiation spectrum measurement in ultra-intense laser–plasma interaction experiment. (b) Spectral sensitivity of the multichannel calorimeter system.

Fig. 4. (a) The measured BTR energy from a $5~\unicode[STIX]{x03BC}\text{m}$ copper target as a function of the pump laser energy. (b) The measured BTR spectrum with driven laser energy on target varying from 14 J to 54 J from a $5~\unicode[STIX]{x03BC}\text{m}$ copper target.

Fig. 5. (a) The measured BTR energy as a function of copper foil target thickness. (b) The measured BTR spectrum with copper foil target thickness varying from $1~\unicode[STIX]{x03BC}\text{m}$ to $100~\unicode[STIX]{x03BC}\text{m}$.

Table1. Factors for the spectral sensitivity of the multichannel system.

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Study of backward terahertz radiation from intense picosecond laser–solid interactions using a multichannel calorimeter system Download： 524次

Fig. 1. Schematic layout of eight-channel THz calorimeter system.

Fig. 2. Linear response of the detector to energy of near-infrared and THz wavelengths.

Fig. 3. (a) Experimental setup of THz radiation spectrum measurement in ultra-intense laser–plasma interaction experiment. (b) Spectral sensitivity of the multichannel calorimeter system.

Fig. 4. (a) The measured BTR energy from a $5~\unicode[STIX]{x03BC}\text{m}$ copper target as a function of the pump laser energy. (b) The measured BTR spectrum with driven laser energy on target varying from 14 J to 54 J from a $5~\unicode[STIX]{x03BC}\text{m}$ copper target.

Fig. 5. (a) The measured BTR energy as a function of copper foil target thickness. (b) The measured BTR spectrum with copper foil target thickness varying from $1~\unicode[STIX]{x03BC}\text{m}$ to $100~\unicode[STIX]{x03BC}\text{m}$.

Table1. Factors for the spectral sensitivity of the multichannel system.

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