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Chin. Phys. B, 2011, Vol. 20(11): 114213    DOI: 10.1088/1674-1056/20/11/114213
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Describing spatiotemporal couplings in ultrashort pulses using coupling coefficients

Zeng Shu-Guang(曾曙光)a)b), Dan You-Quan(但有全) a), Zhang Bin(张彬)a)†, Sun Nian-Chun(孙年春)a) , and Sui Zhan(隋展) c)
a College of Electronics Information, Sichuan University, Chengdu 610064, China; b College of Science, China Three Gorges University, Yichang 443002, China; c Laser Fusion Research Centre of China Academy of Engineering Physics, Mianyang 621900, China
Abstract  Three coupling coefficients are defined to describe spatiotemporal coupling in ultrashort pulses. With these coupling coefficients, the first-order spatiotemporal couplings of Gaussian pulse and beam are described analytically. Also, the first-order and the second-order spatiotemporal couplings caused by angular dispersion elements are studied using these coupling coefficients. It can be shown that these coupling coefficients are dimensionless and normalized, and readily indicate the severity of spatiotemporal coupling.
Keywords:  spatiotemporal coupling      ultrashort pulse      angular dispersion      spatial chirp  
Received:  26 May 2010      Revised:  07 June 2011      Accepted manuscript online: 
PACS:  42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)  
  42.79.-e (Optical elements, devices, and systems)  
Fund: Project supported by the Program for New Century Excellent Talents in University (NCET), China (Grant No. NCET-05-0784).

Cite this article: 

Zeng Shu-Guang(曾曙光), Dan You-Quan(但有全), Zhang Bin(张彬), Sun Nian-Chun(孙年春) , and Sui Zhan(隋展) Describing spatiotemporal couplings in ultrashort pulses using coupling coefficients 2011 Chin. Phys. B 20 114213

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