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缺陷为增益介质的光子晶体光放大特性的研究

Study on optical amplification characteristics of photonic crystal with defect as gain medium

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摘要

为了研究含缺陷层为增益介质的三元1维光子晶体的光学特性,采用光学传输矩阵的方法进行了理论分析。结果表明,增益缺陷层厚度及光学常数的变化对于红外区的禁带结构影响不大,增益介质层主要对中心波长为1.8μm所处的透射带带边波长的放大效应特别明显。还研究了增益介质缺陷层的厚度、光学常数的变化对于红外区透射带边(2.1869μm)波长的光放大效应;当增益介质厚度为0.0101μm,n= 5.03+0.124i时,可以获得在波长2.1869μm 处透射系数为428的光放大。在红外区,光放大波长随着中心波长的变化而变化,但该波长都是在中心波长所处透射带的带边处。该结果可为以光子晶体作为激光增益介质的研究提供理论指导。

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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中图分类号:O734

DOI:10.3969/j.issn.1001-3806.2012.03.021

所属栏目:激光材料和光学元件

收稿日期:2011-09-29

修改稿日期:2011-10-18

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何世昆:西安建筑科技大学 物理系,西安 710055
梁良:西安建筑科技大学 物理系,西安 710055
张玲:西安建筑科技大学 物理系,西安 710055
曹建建:西安建筑科技大学 物理系,西安 710055

联系人作者:何世昆(liangll@pub.xaoline.com)

备注:何世昆(1983-),男,硕士研究生,现在主要从事光子晶体材料的研究。

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引用该论文

HE Shi-kun,LIANG Liang,ZHANG Ling,CAO Jian-jian. Study on optical amplification characteristics of photonic crystal with defect as gain medium[J]. Laser Technology, 2012, 36(3): 368-371

何世昆,梁良,张玲,曹建建. 缺陷为增益介质的光子晶体光放大特性的研究[J]. 激光技术, 2012, 36(3): 368-371

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