Multi-wavelength Frequency Conversion in Fractal Superlattice Crystals

Xueying WANG; Boqin MA

doi:10.3788/gzxb20235211.1126002

Journals >Acta Photonica Sinica >Volume 52 >Issue 11 >Page 1126002 > Article

Acta Photonica Sinica
Vol. 52, Issue 11, 1126002 (2023)

Multi-wavelength Frequency Conversion in Fractal Superlattice Crystals

Xueying WANG¹ and Boqin MA^2,*

Author Affiliations

¹School of Information and Communication Engineering，Communication University of China，Beijing 100024，China

²School of Data Science and Intelligent Media，Communication University of China，Beijing 100024，China

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DOI: 10.3788/gzxb20235211.1126002 Cite this Article

Xueying WANG, Boqin MA. Multi-wavelength Frequency Conversion in Fractal Superlattice Crystals[J]. Acta Photonica Sinica, 2023, 52(11): 1126002 Copy Citation Text

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$Structure design of Gosper fractal superlattice$

Fig. 1. Structure design of Gosper fractal superlattice

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$Structure design of Z fractal superlattice$

Fig. 2. Structure design of Z fractal superlattice

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$Diffraction patterns of Gosper fractal and periodic structures$

Fig. 3. Diffraction patterns of Gosper fractal and periodic structures

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$Schematic diagram of noncollinear quasi-phase matched processes in the reciprocal space of Gosper fractal structure$

Fig. 4. Schematic diagram of noncollinear quasi-phase matched processes in the reciprocal space of Gosper fractal structure

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$Diffraction pattern of Z fractal superlattice structure$

Fig. 5. Diffraction pattern of Z fractal superlattice structure

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$Three-dimensional Z fractal superlattice structure$

Fig. 6. Three-dimensional Z fractal superlattice structure

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Theoretical value of reciproca vector/μm^-1	Fundamental frequency wavelength/μm	Frequency doubling wavelength/μm
$\|G_{a, 1}\| = 0.255$	1.897	0.978 5
$\|G_{a, 2}\| = 0.511$	1.340	0.670 0
$\|G_{b, 1}\| = 0.419$	1.460	0.730 0
$\|G_{b, 2}\| = 0.838$	1.143	0.571 5
$\|G_{b, 3}\| = 1.257$	1.011	0.505 5
$\|G_{c, 2}\| = 0.327$	1.935	0.967 5
$\|G_{c, 3}\| = 0.491$	1.622	0.811 0

Table 1. Noncollinear quasi-phase matched frequency doubling in Gosper fractal superlattice crystal

Xueying WANG, Boqin MA. Multi-wavelength Frequency Conversion in Fractal Superlattice Crystals[J]. Acta Photonica Sinica, 2023, 52(11): 1126002

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