Here, an additional periodic phase (APP) from order/disorder alignment is proposed to meet the phase-matching condition in arbitrary nonlinear crystals and demonstrated from the visible region to the deep-ultraviolet region (e.g., LiNbOand quartz). Remarkably, pioneering 177.3-nm coherent output ...
The phase-matching (PM) condition, i.e., the momentum conservation in nonlinear interactions, is the intrin- sic factor governing the energy-conversion efficiency and bandwidth in OPCPA. However, the PM is sensitive to both the wavelength and temperature in collinear PM, resulting in limited ...
(6). At low conversion efficiencies, the generated intensity has the same sin2(ΔkL/2)/(ΔkL/2)2 dependence on the wave–vector mismatch as has second-harmonic conversion, but the phase-matching condition is now Δk = k(ω3) − k(ω1) − k(ω2) = 0, which is equivalent to...
In a frequency doubler, the direction of energy transfer is governed by the complex phase of the termE12E2∗, whereE1is the complex electric field amplitude of the fundamental wave andE2that of the second harmonic. The asterisk indicates complex conjugation. The phase-matching conditionk2=2k1im...
a请输入您需要翻译的Even a good night,Ican't have文本! 正在翻译,请等待...[translate] a保持低调,幸福继续 正在翻译,请等待...[translate] aMultimodal Learning Multimodal学会[translate] aphase matching condition with a single reciprocal vector 正在翻译,请等待...[translate]...
Phase-matching of light waves is a critical condition for maximizing the efficiency of nonlinear frequency conversion processes in nonlinear optical crystals; however, phase-matching, commonly achieved by tuning birefringence, is often difficult to achieve over a wide wavelength range. Here, full-wavelen...
We show that for such interfaces an anomalous phase-matching condition prevails, which is the nonlinear analogue of the generalized Snell’s law. The subwavelength phase control of optical nonlinearities paves the way for the design of ultrathin, flat nonlinear optical elements. We demonstrate ...
It has been found that the interaction of two waves of different frequencies, such as ω and 2ω, is greatest—and therefore the transfer of energy from the fundamental wave to the harmonics is a maximum—if their phase velocities are equal (the condition of phase matching). The conditions ...
Energy conversion process and spatial distribution of forward-propagating signal wave and backward-propagating wave of sum frequency under phase-matching condition were investigated. 基于电磁场理论,推导了无耗非线性左手材料中三波耦合的波混合方程,并研究了相位匹配条件下正向信号波与逆向和频波的能量转换过程...
2) optimum resonance condition 最佳匹配条件 1. General expressions of intensity ratio of light in ring and output port were deduced according to multiple-beam interference,and optimum resonance condition was given. 确定了谐振条件和最佳匹配条件,分析了谐振腔的谐振特性。