Nonlinear conversion efficiency of random quasi-phase matching in polycrystal influenced by grain morphological properties

2020 ◽  
Author(s):  
Kefei Liu ◽  
Kai Zhong ◽  
Xianzhong Zhang ◽  
Fangjie Li ◽  
Degang Xu ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Morphological Properties ◽  
Phase Matching ◽  
Quasi Phase Matching ◽  
Nonlinear Conversion

Analysis of highly efficient DFG in an electro-optic material exhibiting polarization rotation using TIR-based ORQPM technique

2021 ◽  
Author(s):  
Moumita Saha ◽  
Sumita Deb
Keyword(s):  
Conversion Efficiency ◽  
Optical Rotation ◽  
Difference Frequency Generation ◽  
Guided Wave ◽  
Phase Matching ◽  
Highly Efficient ◽  
Quasi Phase Matching ◽  
Rectangular Slab ◽  
The Impact ◽  
Matching Techniques

This paper is a numeric-analytical work for highly efficient difference-frequency generation (DFG) by the integrated effect of total-internal-reflection-based optical rotation quasi-phase-matching (ORQPM) and nonresonant quasi-phase-matching techniques in a thin yttrium oxide-coated rectangular slab of magnesium oxide-doped lithium niobate crystal. The conversion efficiency of 37.2% has been obtained by ray-optics analysis, corresponding to an idler wavelength of 1570[Formula: see text]nm. Moreover, the guided-wave approach has also been analyzed for more accurate and realistic outcomes, yielding a peak conversion efficiency of 1.64%. The impact of the influencing factors like surface roughness, absorption, and nonlinear law of reflection has also been incorporated in the computer-aided simulation for providing a pragmatic understanding of the whole study.

ENHANCING CONVERSION EFFICIENCY IN THE SECOND-ORDER NONLINEAR OPTICAL PHENOMENA

2004 ◽  
Vol 13 (03n04) ◽  
pp. 445-449
Author(s):  
JONGBAE KIM ◽  
JUNG JIN JU ◽  
MIN-SU KIM
Keyword(s):  
Harmonic Generation ◽  
Conversion Efficiency ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Second Order ◽  
Phase Matching ◽  
Quasi Phase Matching ◽  
Optical Phenomena ◽  
Nonlinear Optical Phenomena ◽  
Second Order Nonlinearity

The distributions of electric field and the induced second-order nonlinearity are discussed in a poling scheme where the width of a periodic electrode is shorter than the conventional coherent length. The theoretical aspects of quasi-phase matching for a subsequent experiment in second harmonic generation are analyzed. The present analysis consistently explains that the conversion efficiency can be enhanced if the electrode width is shortened, and maximized if the electrode width is optimized.

scholarly journals 55% conversion efficiency to green in bulk quasi-phase-matching lithium niobate

1995 ◽  
Vol 31 (8) ◽  
pp. 669 ◽  
Author(s):  
J. Webjörn ◽  
V. Pruneri ◽  
P.St.J. Russell ◽  
D.C. Hanna
Keyword(s):  
Lithium Niobate ◽  
Conversion Efficiency ◽  
Phase Matching ◽  
Quasi Phase Matching

High-order quasi–phase-matching harmonic generation in two-dimensional orthorhombic lattice

2004 ◽  
Vol 68 (6) ◽  
pp. 804-810 ◽  
Author(s):  
Boqin Ma ◽  
Ting Wang ◽  
Peigen Ni ◽  
Bingying Cheng ◽  
Daozhong Zhang
Keyword(s):  
Harmonic Generation ◽  
High Order ◽  
Phase Matching ◽  
Two Dimensional ◽  
Orthorhombic Lattice ◽  
Quasi Phase Matching
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