Prof. Weiwei Liu （刘伟伟）（Group Leader）

Email: liuweiwei@nankai.edu.cn

 

Education

Ph. D degree, Department of Physics, Laval University, Canada (2005)

Visiting scholar, Max-Planck Institute for the Physics of Complex System, Germany (2004)

Bachelor degree, Institute of Physics, Nankai University, China (1998)

 

Working experience

Full professor, Institute of Modern Optics, Nankai University, China (2007 - )

Post-doctor, Center for Optics, Laser and Photonics (COPL), Laval University, Canada (2006 - 2007)

Engineer, Institute of Physics, Nankai University, China (1998 - 2000)

 

University and Society service

Director, Institute of Modern Optics (IMO), Nankai University (2015 - )

Head of Department of Optoelectronic Science and Technology, Nankai University (2018 - )

Chairman of Academic Degrees Committee in Optical Engineering in Nankai University (2013 - )

 

Member of the standing committee of the Chinese Optical Society (2016 - )

Vice chairmen of Optical Society of Tianjin (2015 - )

Vice chairmen of Laser Technology Society of Tianjin (2021 - )

 

Executive director of Youth Federation in Tianjin (2017 - )

Advisor of OSA student Chapter in Nankai University (2015 - )

Advisor of SPIE student Chapter in Nankai University (2015 - )

 

Awards

Second Prize of Tianjin City’s Technical Invention Award (2020)

Gold medal of Tianjin City’s Patent Award (2019)

Prize of Excellence of Tianjin City’s Patent Award (2018)

First Prize of Tianjin City’s Natural Science Award (2016)

 

Optica (formally OSA) fellow (2021)

Prize of Excellence for Industry-University-Research Institute Collaboration (2019) awarded by China Industry-University-Research Institute Collaboration Association

Tianjin City’s Excellent Scientist (2019)

Tianjin City’s Leading Talent award in the Innovation Leadership Program in Sciences and Technologies for Young and Middle-aged Scientists (2019)

Tianjin City’s Award for Expert with Outstanding Contribution (2018)

Tianjin City’s Award for High-level Innovation and Entrepreneurship Team (2017)

Tianjin City’s May lst Labour Day Medal (2017)

Scientific Chinese Figures 2015

Excellent young scientist award of the national annual conference in THz science and Technology (2015)

Outstanding Chinese young scientific and technological workers (2015)

Wang Daheng’s Optics Prize of the Chinese Optical Society, the top optics prize in China (2011)

Jin Guofan Prize for excellent youth of the China Instrument Society (2011)

Special award for young scientist, Fok Ying Tong Education Foundation (2008)

Special award for New Century Excellent Talents in Universities, Education Ministry, China (2007)

Chinese Government Special Award for Outstanding Self-financed Student Abroad (2005)

 

Major scientific interests

Ultrafast laser science and application

Terahertz spectroscopy and imaging

Optical engineering for space science

 

Major research achievements

Has led and successfully executed more than 20 research projects financially supported by the National Key Research and Development Program, National manned space program, National Natural Science Foundation of China, Special Support Plan for Talent Development in Tianjin and open research funds of State Key Laboratories.

Has published more than 200 scientific papers in refereed journals, total citation number is more than 8000, H index reaches 48. (Google scholar).

 

Experimentally confirmed intensity clamping during filamentation of a femtosecond Ti-sapphire laser pulse in gases and condensed matters

Co-discoverer of air lasing during filamentation of a femtosecond Ti-sapphire laser pulse

Direct experimental measurement of the critical power of self-focusing (and the nonlinear refractive index) in gases

Experimental confirmation of the filament core as a fundamental spatial mode during filamentation of a Ti-sapphire laser pulse (mode self-cleaning)

Invented the in-situ measurement technique of the laser intensity inside a femtosecond laser filament

Invented p-phase plate based method to generate filament array

Discovered the new phenomena of the strong spatial confinement and the birefringence of THz pulse during femtosecond laser filamentation

Promoted the energy and efficiency of the THz pulse generation by femtosecond laser filamentation in gases

 

Major innovative development in optical engineering and technology

First Chinese in-orbit multi-trace gas detection system, installed in spaceships Tiangong 1 and 2.

A full simulation program of the first Chinese environment monitoring satellite.

Fiber based miniature suspended solid sensor; currently being used in section stability test of ring-road-breakwater in Maputo City and Shanhaiguan breakwater, in the analysis of backfill in Yangtze estuary deep water channel.

Non-destructive THz scanning image system, being used in the evaluation of construction quality of highway.

Broadband THz time domain spectroscopy system, being used in identifying drug and medicine.

 

International conference organization:

Member of the organizing committee International Winter Workshop on Ultrafast Intense Laser Science, February 11-14, 2005, Québec City, Canada

Member of the organizing committee of the China-Quebec bilateral meeting on ultrafast intense laser science, September 30-October 2, 2006 Québec city, Canada

Member of the local organizing committee of the first International Symposium on Ultrafast Intense Laser Filamentation, September 27-30, 2006 Québec city, Canada

Member of the local organizing committee of the Canada-Japan bilateral meeting on ultrafast intense laser science, March 5-8, 2007, Québec City, Canada

Member of the local organizing committee of the 13th International Conference on Multiphoton Processes, December 7-10, 2014, Shanghai, China

Member of the program committee of the 8th International Symposium on Ultrafast Phenomena and Terahertz Waves, October 10-12, 2016, Chongqing, China

Member of the program committee of the 9th International Symposium on Ultrafast Phenomena and Terahertz Waves, April 23-29, 2018, Changsha, China

Chairman of the 11st Asian Symposium on Intense Laser Science, October 29 - November 1, 2019 in Tianjin, China

Member of the program committee of High-Intensity Lasers and High-Field Phenomena, March 23- 25, 2020, Prague, Czech Republic （cancelled due to COVID-19 epidemic）

Member of the local organizing committee of the 10th International Symposium on Ultrafast Phenomena and Terahertz Waves, September 26-29, 2020, Chengdu, China

Member of the local organizing committee of the 22nd Ultrafast Phenomena Conference, November 15-20, 2020, Shanghai, China

Member of the program committee of the 8th International Conference on Laser Filamentation, November 16-20, 2020, Doha, Qatar

Member of the program committee of High-Intensity Lasers and High-Field Phenomena (HILAS) Conference, March 22-25, 2022, Budapest, Hungary

 

Selected publications

(（full list could be found via

https://scholar.google.com/citations?user=1J6gXCAAAAAJ   

https://publons.com/researcher/817306/weiwei-liu/   

more than 200 scientific papers in refereed journals, total citation number is more than 8000, H index reaches 48)

 

[1] Wei-Wei Liu, Xi Zeng, Lie Lin, Peng-Fei Qi*, Nan Zhang*, Spectral domain Z-scan technique, Optics and Lasers in Engineering,, 146, 106693 (2021)

[2] Zijie Dai, Manukumara Manjappa, Yunkun Yang, Thomas Cai Wei Tan, Bo Qiang, Song Han, Liang Jie Wong, Faxian Xiu,* Weiwei Liu,*, and Ranjan Singh*, High Mobility 3D Dirac Semimetal (Cd3As2) for Ultrafast Photoactive Terahertz Photonics, Adv. Funct. Mater.,31, 2011011 (2021)

[3] Weiwei Liu, ZhiqiangYu, Dan Lu, Nan Zhang*, Multi-wavelength annular optical pulses generated by double interferent femtosecond Bessel laser beams in silica glass, Optics and Lasers in Engineering, 136, 106330 (2021)

[4] J. Yao, J. Ma, J. Zhao, P. Qi, M. Li, L. Lin, L. Sun, X. Wang, W. Liu*, and Y. Wang*, Corneal hydration assessment indicator based on terahertz time domain spectroscopy, Biomed. Opt. Express, 11, 2073 (2020)

[5] C. Chu, D. E. Shipilo, D. Lu, Z. Zhang, S. V. Chuchupal, N. A. Panov, O. G. Kosareva, and W. Liu*, Femtosecond filament emergence between π-shifted beamlets in air, Opt. Express, 28, 1002 (2020)

[6] Q. Su, L. Sun, C. Chu, Z. Zhang, N. Zhang, L. Lin, Z. Zeng*, O. Kosareva, W. Liu*, S. L. Chin, Effect of Molecular Orbital Angular Momentum on Spatial Distribution of Fluorescence during Femtosecond Laser Filamentation in Air, J. Phys. Chem. Lett., 11, 730 (2020) (Cover story)

[7] P. Qi, Q. Su, D. Lu, L. Lin, N. Zhang, W. Liu*, Optical nonlinearities of alcoholic liquids under high-repetition-rate femtosecond lasers by single beam time-resolved eclipsed Z-scan, Opt. & Laser Tech., 109, 543 (2019)

[8] Q. Su, W. Liu, D. Lu, P. Qi, O. Kosareva and N. Zhang*, Influence of the tilting angle of a BBO crystal on the terahertz radiation produced by a dual-color femtosecond laser," IEEE Trans. THz Sci. & Tech., 9, 669-674 (2019)

[9] J. Zhao, W. Liu*, S. Li, D. Lu, Y. Zhang, Y. Peng, Y. Zhu, and S. Zhuang, Clue to a thorough understanding of terahertz pulse generation by femtosecond laser filamentation, Photon. Res., 6, 296 (2018)

[10] Y. Tian, J. Liu*, Y. Bai, S. Zhou, H. Sun, W. Liu*, J. Zhao, R. Li*, & Z. Xu*, Femtosecond-laser-driven wire-guided helical undulator for intense terahertz radiation, Nat, Photon., 11, 242 (2017) (Annual top 10 advances in optics in China)

[11] J. Zhao, W. Chu, Z. Wang, Y. Peng, C. Gong, L. Lin, Y. Zhu, W. Liu*, Y. Cheng, S. Zhuang, and Z. Xu, Strong Spatial Confinement of Terahertz Wave inside Femtosecond Laser Filament, ACS Photon., 2338, 3 (2016)

[12] J. Yang, J. Zhao, C. Gong, H. Tian, L. Sun, P. Chen, L. Lin, and W. Liu*, 3D printed low-loss THz waveguide based on Kagome photonic crystal structure, Opt. Express, 24, 22454 (2016)

[13] L. Liang, M. Qi, J. Yang, X. Shen, J. Zhai, W. Xu, B. Jin, W. Liu*, Y. Feng, C. Zhang, H. Lu, H.-T. Chen, L. Kang, W. Xu, J. Chen, T. Jun Cui, P. Wu and S. Liu, Anomalous Terahertz Reflection and Scattering by Flexible and Conformal Coding Metamaterials, Adv. Opt. Mat., 3, 1374 (2015) (Frontispiece)

[14] J. Yang, T. Zeng, L. Lin, and W. Liu*, Beam wandering of femtosecond laser filament in air, Opt. Express, 23, 25628 (2015)

[15] J. Zhao, L. Guo, W. Chu, B. Zeng, H. Gao, Y. Cheng and W. Liu*, Simple method to enhance terahertz radiation from femtosecond laser filament array with a step phase plate, Opt. Lett., 40, 3838 (2015)

[16] X. Sun, T. Zeng, H. Gao, S. Zhang and W. Liu*, Power dependent filamentation of a femtosecond laser pulse in air by focusing with an axicon, J. Phys. B, 48, 094004 (2015) (Highlight of 2015)

[17] H. Gao, W. Chu, G. Yu, B. Zeng, J. Zhao, Z. Wang, W. Liu*, Y. Cheng, Z. Xu，Femtosecond laser filament array generated with step phase plate in air，Opt. Express, 21, 4612, (2013)

[18] X. Sun, H. Gao, B. Zeng, S. Xu, W. Liu*, Y. Cheng, Z. Xu, and G. Mu, Multiple filamentation generated by focusing femtosecond laser with axicon, Opt. Lett., 37, 857 (2012)

[19] X. Sun, S. Xu, J. Zhao, W. Liu*, Y. Cheng, Z. Xu, S. L. Chin, and G. Mu, Impressive laser intensity increase at the trailing stage of femtosecond laser filamentation in air, Opt. Express, 20, 4790 (2012)

[20] S. Xu, X. Sun, B. Zeng, W. Chu, J. Zhao, W. Liu*, Y. Cheng, Z. Xu, and S. L. Chin, Simple method of measuring laser peak intensity inside femtosecond laser filament in air, Opt. Express, 20, 299 (2012)

[21] Y. Fu, H. Xiong, H. Xu, J. Yao, B. Zeng, W. Chu, Y. Cheng*, Z. Xu, W. Liu*, and S. L. Chin, Generation of extended filaments of femtosecond pulses in air by use of a single-step phase plate, Opt. Lett., 34, 3752 (2009)       

[22] Y. Zhang, Y. Chen, S. Xu, H. Lian, M. Wang, W. Liu*, S. L. Chin, and G. Mu, Portraying polarization state of terahertz pulse generated by a two-color laser field in air, Opt. Lett., 34, 2841 (2009)

[23] Y. Chen, C. Marceau, W. Liu*, Z.-D. Sun, Y. Zhang, F. Théberge, M. Châteauneuf, J. Dubois and S. L. Chin, Elliptically polarized terahertz emission in the forward direction of a femtosecond laser filament in air, Appl. Phys. Lett., 93, 231116 (2008) 

[24] Y. Zhang, Y. Chen, C. Marceau, W. Liu*, Z.-D. Sun, S. Xu, F. Théberge, M. Châteauneuf, J. Dubois, and S. L. Chin, Non-radially polarized THz pulse emitted from femtosecond laser filament in air, Opt. Express, 16, 15483 (2008)

[25] Z.J. Xu, W. Liu*, N. Zhang, M.W. Wang and X.N. Zhu, Effect of intensity clamping on laser ablation by intense femtosecond laser pulses, Opt. Express, 16,3604 (2008)

[26] W. Liu*, H.L. Xu, G. Méjean^, Y. Kamali, J.-F. Daigle, A. Azarm, P.T. Simard, P. Mathieu, G. Roy and S.L. Chin, Efficient non-gated remote-filament induced breakdown spectroscopy of metallic sample, Spectrochimica Acta, B, 62, 76 (2007)

[27] W. Liu*, F. Théberge, E. Arévalo, J.-F. Gravel, A. Becker and S.L. Chin, Experiment and simulations on the energy reservoir effect in femtosecond light filaments, Opt. Lett., 30, 2602 (2005)

[28] W. Liu* and S.L. Chin, Direct measurement of the critical power of femtosecond Ti:sapphire laser pulse in air, Opt. Express, 13, 5750 (2005)

[29] W. Liu*, S.A. Hosseini, Q. Luo, B. Ferland, S.L. Chin, O.G. Kosareva, N.A. Panov and V.P. Kandidov, Experimental observation and simulations of the self-action of white light laser pulse propagating in air, N. J. Phys., 6, 6 (2004)

[30] W. Liu*, S. Petit, A. Becker, N. Aközbek, C.M. Bowden and S.L. Chin, Intensity clamping of a femtosecond laser pulse in condensed matter, Opt. Commun., 202, 189 (2002)