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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Editor: Zhizhan Xu
  • Vol. 12, Iss. 8 — Aug. 1, 2014
  • pp: 083201–

Frequency spectrum characterization of terahertz emission from laser-induced air plasma

Ji Zhao, Liangliang Zhang, Yiman Luo, Tong Wu, Cunlin Zhang, and Yuejin Zhao  »View Author Affiliations


Chinese Optics Letters, Vol. 12, Issue 8, pp. 083201- (2014)


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Abstract

Terahertz (THz) emission from laser-induced air-plasma is presented. The frequency spectra of THz wave are investigated using an air-biased-coherent-detection method. The frequency spectra are measured under different pump-pulse and probe-pulse energies. The frequency spectra become narrow with the increasing pump power and we speculate it caused by collision behavior. Meanwhile, the bandwidth of the frequency spectra is broadened by the increasing probe power, which can be explained by pulse compression. Based on this finding, the optimal frequency spectrum of THz can be achieved by regulating the probe and pump beam.

© 2014 Chinese Optics Letters

OCIS Codes
(320.7090) Ultrafast optics : Ultrafast lasers
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

ToC Category:
Ultrafast Optics

Citation
Ji Zhao, Liangliang Zhang, Yiman Luo, Tong Wu, Cunlin Zhang, and Yuejin Zhao, "Frequency spectrum characterization of terahertz emission from laser-induced air plasma," Chin. Opt. Lett. 12, 083201- (2014)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-12-8-083201

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