1. 诞生背景 准相位匹配(Quasi-phase Matching)是一种利用周期性结构实现相位匹配的技术。它的诞生是为了解决传统相位匹配技术在实际应用中的限制。传统的相位匹配技术要求介质的折射率和光的频率满足特定的关系,这在实际中往往难以实现。而准相位匹配技术则通过引入周期性结构,使得不同频率的光在传播过程中能够保持相位...
应用准相位匹配(Quasi-Phase Matching)的原理及极化反转制程,再结合低损耗的光学波导的制作,我们可以达到良好的转换效率, …thesis.lib.ncu.edu.tw|基于5个网页 2. 准相位匹配技术 ...ce frequency generation)和准相位匹配技术(Quasi-phase matching),将调}皆范围在750～840 nm之间的连续可调谐钛宝石激光 …d....
Quasi-phase matching (QPM) enables flexible and efficient second-order nonlinearity ranging from bulk nonlinear crystals to integrated nonlinear photonic devices. Here, we propose a QPM nonlinear photonic device constructed using monolayer transition-metal dichalcogenide (TMDC) arrays attached on a silicon...
Quasi-phase-matching is now widely used for nonlinear optical frequency conversion, realizable in a material with its nonlinear optical coefficient modulated. The reciprocal vector of the structure is used for compensating the phase-mismatch between the interacting waves due to dispersion, whereas the ...
Quasi-phase-matched second-harmonic generation in crystals has evolved into a successful technique of avoiding the beam walk-off and degradation of beam quality associated with angular phase matching. Moreover, quasi-phase matching provides a technique of phase matching nonlinear materials for which ...
The basic principle of quasi-phase-matching (QPM) of DFG is depicted, the temperature tuning characteristics of periodically poled LiNbO3(PPLN) are studied based on the Sellmeier e. 研究了基于准相位匹配技术的差频产生基本原理和PPLN晶体的温度调谐特性;以甲醛为检测目标气体,研究了基于差频产生的大气甲...
High-quality crystals without inversion symmetry are the conventional platform to achieve optical frequency conversion via three-wave mixing. In bulk crystals, efficient wave mixing relies on phase-matching configurations, while at the micro- and nanosca
3.The basic principle of quasi-phase-matching (QPM) of DFG is depicted, the temperature tuning characteristics of periodically poled LiNbO3(PPLN) are studied based on the Sellmeier e.研究了基于准相位匹配技术的差频产生基本原理和PPLN晶体的温度调谐特性;以甲醛为检测目标气体,研究了基于差频产生的大气甲...
Quasi-phase-matching for third harmonic generation in noble gases employing ultrasound U. K. Sapaev,1 I. Babushkin,2 and J. Herrmann 1,? 1 Max-Born-Institute for Nonlinear optics and Fast Spectroscopy, Max-Born-Str. 2a, Berlin D-12489, Germany 2 Weierstrass Institute, Mohrenstrasse 39, ...
we demonstrate a quasi-phase-matching (QPM) -division multiplexing holography in a three-dimensional (3D) nonlinear photonic crystal (NPC). 3D NPC works as a nonlinear hologram, in which multiple images are distributed into different Ewald spheres in reciprocal space. The reciprocal vectors locating...