For coherent construction of the harmonic emission, the wave fronts of the fundamental laser and the generated harmonics must be in phase. Atoms along the path of the laser produce harmonics propagating with the laser field. When they are in phase with the laser wave front, there is constructive interference and these harmonics combine to build up the harmonic emission. The distance over which t..

https://arxiv.org/pdf/1812.11447위 링크의 정보 참고하시면 좋을 것 같습니다. As mentioned in the three step model, at one half-cycle after ionization, the electron turns back towards the parent ion to recombine when the laser electric field changes sign. Hence, the harmonics are produced twice each cycle and each half cycle of the driving laser produces a short (subfemtosecond) burst of XUV radiation. Thus, the ha..

High harmonic generation - WikipediaFrom Wikipedia, the free encyclopedia Laser science process High-harmonic generation (HHG) is a non-linear process during which a target (gas, plasma, solid or liquid sample) is illuminated by an intense laser pulse. Under such conditions, the sample willen.wikipedia.org이 글에 대한 백그라운드 설명은 상기 위키디피아 링크를 참조해주세요. This is opposite to traditional optics theory in whi..

Another method to propagate a wave field is by using the Rayleigh-Sommerfeld integral. A very good approximation of this integral states that each point in the plane z=0 emits spherical waves, and to find the field in a point (x,y,z) , we have to add the contributions from all these point sources together. This corresponds to the Huygens-Fresnel principle postulated earlier in Section 5.6. Becau..

Ray transfer matrix analysis (also known as ABCD matrix analysis) is a mathematical form for performing ray tracing calculations in sufficiently simple problems which can be solved considering only paraxial rays. Each optical element (surface, interface, mirror, or beam travel) is described by a 2×2 ray transfer matrix which operates on a vector describing an incoming light ray to calculate the ..