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Volume 36 Issue 3
Mar.  2012
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Study on optical amplification characteristics of photonic crystal with defect as gain medium

  • Corresponding author: LIANG Liang, liangll@pub.xaoline.com
  • Received Date: 2011-09-29
    Accepted Date: 2011-10-18
  • In order to study the optical characteristics of ternary layer 1-D photonic crystal with defect as gain medium,they were analyzed based on the optical transfer matrix.The thickness of gain defect layer and the optical constant change have little effect on the prohibited-band structure in the infrared region,and that the gain medium layer mainly affects the band-edge amplification effect of the transmission band at central wavelength of 1.8μm.The effect of the thickness of gain medium layer,optical constant change on the amplification effect at infrared transmission band edge(2.1969μm) wavelength was also studied.When the gain medium is 0.0101μm thick,n=5.03+0.124i,the transmission coefficient at the wavelength 2.1869μm is up to 428 optical amplification.In the infrared band,optical amplification changes with the central wavelength,but the central wavelength is always at the edges of the wavelength band where the central wavelength is located.The results provide theoretical guidance for the photonic crystal as a laser gain medium.
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Study on optical amplification characteristics of photonic crystal with defect as gain medium

    Corresponding author: LIANG Liang, liangll@pub.xaoline.com
  • 1. Department of Physics, Xi'an University of Archersity & Technology, Xi'an 710055, China

Abstract: In order to study the optical characteristics of ternary layer 1-D photonic crystal with defect as gain medium,they were analyzed based on the optical transfer matrix.The thickness of gain defect layer and the optical constant change have little effect on the prohibited-band structure in the infrared region,and that the gain medium layer mainly affects the band-edge amplification effect of the transmission band at central wavelength of 1.8μm.The effect of the thickness of gain medium layer,optical constant change on the amplification effect at infrared transmission band edge(2.1969μm) wavelength was also studied.When the gain medium is 0.0101μm thick,n=5.03+0.124i,the transmission coefficient at the wavelength 2.1869μm is up to 428 optical amplification.In the infrared band,optical amplification changes with the central wavelength,but the central wavelength is always at the edges of the wavelength band where the central wavelength is located.The results provide theoretical guidance for the photonic crystal as a laser gain medium.

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