CAJ | 학술논문

研究了双色场驱动下的高次谐波量子轨道的相位匹配特性.通过调整激光束腰优化双色场空间分布,可以有效地增加长轨道的径向相位匹配区域,使得长轨道和短轨道在近轴处和离轴处都同时相位匹配.通过选取合适的近场空间过滤片,可以获得清晰的径向干涉条纹.这些结果在分辨不同的干涉现象以及更高精度的观察高阶轨道方面有很大的潜在应用价值.
연구료쌍색장구동하적고차해파양자궤도적상위필배특성.통과조정격광속요우화쌍색장공간분포,가이유효지증가장궤도적경향상위필배구역,사득장궤도화단궤도재근축처화리축처도동시상위필배.통과선취합괄적근장공간과려편,가이획득청석적경향간섭조문.저사결과재분변불동적간섭현상이급경고정도적관찰고계궤도방면유흔대적잠재응용개치.
@@@@The phase matching of the quantum paths in high-order harmonic generation is investigated in two-color laser fields. The results show that the spatial distribution of the laser field is optimized by adjusting the laser beam waist, the phase-matching properties of the long trajectories can be modulated effectively, and then good phase matching for both the two paths can be achieved from on-axis region to off-axis region. A radial clear interference fringe induced by the well phase-matching of two paths can be observed by placing a near-field filter, which has great potential for distinguishing clearly different interference effects and observing higher order trajectories with improved detection sensitivity.