Diffraction characteristic analysis of reflection volume holographic gratings at non-uniform swelling or shrinking

	Diffraction characteristic analysis of reflection volume holographic gratings at non-uniform swelling or shrinking
	He T.; Bayanheshig; Qi X.; Li W.; Tang Y.
	2014
发表期刊	Zhongguo Jiguang/中文 Journal of Lasers
ISSN	ISBN/02587025
期号	41 页码:2
摘要	Diffraction characteristics of reflection volume holographic gratings at nonuniform swelling or shrinking by introducing a function between swelling factor and the thickness of the grating layer are investigated. By means of Kamiya's rigorous delamination-calculation method and Lorentz-Lorenz formula, the analytical expressions of the average refractive index and the modulation are derived. Accordingly, the diffraction efficiency curves of the 1st-order reflection are given when the swelling factors are constant, linear function and nonlinear function. The influences of the average refractive index and the modulation for an ideal grating or decay distribution for the nonideal grating on the angular and wavelength selectivity are analyzed. The diffraction characteristics of the grating are given when the swelling factors are unequal at the exposure area and the unexposed area, and the response degree of diffraction efficiency of the grating to the change of swelling factor is discussed. The results show that nonuniform distribution of the swelling factor causes a diffraction efficiency curve in the asymmetric profile; compared with the modulation of refractive index, the Bragg angle of grating is highly sensitive to the change of average refractive index; the swelling factors at the exposure area and the unexposed area affect the peak efficiency, the angular band range and the spectral bandwidth. The results have theoretical guiding sense for the swelling and shrinking process of the reflection volume holographic gratings.
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/43895
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	He T.,Bayanheshig,Qi X.,et al. Diffraction characteristic analysis of reflection volume holographic gratings at non-uniform swelling or shrinking[J]. Zhongguo Jiguang/中文 Journal of Lasers,2014(41):2.
APA	He T.,Bayanheshig,Qi X.,Li W.,&Tang Y..(2014).Diffraction characteristic analysis of reflection volume holographic gratings at non-uniform swelling or shrinking.Zhongguo Jiguang/中文 Journal of Lasers(41),2.
MLA	He T.,et al."Diffraction characteristic analysis of reflection volume holographic gratings at non-uniform swelling or shrinking".Zhongguo Jiguang/中文 Journal of Lasers .41(2014):2.

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