International Journal of Terahertz Science and Technology
  TST >> Vol.8, No.3, September 2015: PP. 119-128
 

Investigation of the tapered waveguide structures for terahertz quantum cascade lasers

T. H. Xu, and J. C. Cao *
Key Laboratory of Terahertz Solid-State Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
* Email: jccao@mail.sim.ac.cn

View Full Text: PDF

Abstract: The authors present a quasi-three-dimensional numerical simulation model based on the beam propagation method, which is suitable to simulate and design terahertz quantum cascade lasers with non-uniform axial waveguide structure. Using this simulation model, various kinds of tapered terahertz quantum cascade lasers were studied. According to our analysis, the normal tapered waveguide structure, although is simple, is a good choice to achieve good output beam quality and high output power simultaneously.

Keywords: Beam propagation method, Terahertz quantum cascade laser, Beam quality, Tapered, Numerical simulation.

Received: 2015-8-18

Published: 2015-9-29

Acknowledgments: This work was supported by the 973 Program of China (Grant No. 2014CB339803), the National Natural Science Foundation of China (Grant Nos. 6113100661321492), the Major National Development Project of Scientific Instrument and Equipment (Grant No. 2011YQ150021), the National Science and Technology Major Project (Grant No. 2011ZX02707), the International Collaboration and Innovation Program on High Mobility Materials Engineering of the Chinese Academy of Sciences, the Shanghai Municipal Commission of Science and Technology (Project No. 14530711300) , and the Shanghai Sailing Program (Project No. 15YF1414400).

Cite this article:
T. H. Xu, and J. C. Cao *. Investigation of the tapered waveguide structures for terahertz quantum cascade lasers[J]. International Journal of Terahertz Science and Technology, 2015, Vol.8, No.3: 119-128.  DOI:10.11906/TST.119-128.2015.09.12

URL: http://www.tstnetwork.org/10.11906/TST.119-128.2015.09.12

 

 
 

Print | close

Copyright© 2008 Scinco Inc. All Rights Reserved
P.O.Box 6982, Williamsburg, VA 23188, USA