International Journal of Terahertz Science and Technology
  TST >> Vol.7, No.3, September 2014: PP. 154-159
 

Measurement and improvement of beam profile for terahertz quantum cascade laser

Yao Zhao 1*, Weihua Li 2, Dawei Yan 2, Zejian Lu 1 , Xiaoming Liu 1,
Yuan Yao 1, Junsheng Yu 1, and Xiaodong Chen 3
1 International Joint Laboratory of Electromagnetic Theory and Applications,
School of Electronic Engineering, Beijing University of Posts and Telecommunications.
No.10 Xitucheng Road, Haidian District, Beijing, China, 100876
2 Research Centre of Laser Fusion, China Academy of Engineering Physics, Mianyang, China, 621900
3 School of Electronic Engineering and Computer Science, Queen Mary, University of London
Mile End Road, London E1 4NS
*1 Email: zy715754427@139.com

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Abstract: The divergence of the laser beam generated by Quantum Cascade Laser is relative large, which is not conducive to the process of experiment and the acquisition of the desirable results. Thus, a convex lens would be utilized in the propagation path to optimize the laser beam.

Keywords: Terahertz, Quantum cascade laser, Gaussian beam, Divergence.

Received: 2014-5-31

Published: 2014-9-30

Acknowledgments: This work was supported in part by National key scientific instrument and equipment devel-opment projects (NO. 2011YQ130018), the CAEP THz Science and Technology Foundation (NO. CAEPTHz201210), the Fundamental Research Funds for the Central Universities of China, the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education ministry and the Civil Aerospace Science and Technology Pre-research Program of China.

Cite this article:
Yao Zhao, Weihua Li, Dawei Yan, Zejian Lu, Xiaoming Liu, Yuan Yao, Junsheng Yu, and Xiaodong Chen. Measurement and improvement of beam profile for terahertz quantum cascade laser[J]. International Journal of Terahertz Science and Technology, 2014, Vol.7, No.3: 154-159.  DOI:10.11906/TST.154-159.2014.09.14

URL: http://www.tstnetwork.org/10.11906/TST.154-159.2014.09.14

 

 
 

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