Multifoton Süreçlerde Atomik Sistem ile Etkileşen Süper Yoğun Lazer Alanları: Dipol ve Rölativistik Olmayan Etkiler

Bu çalışmada, güçlü alan ile etkileşen bir elektronlu atomik sistemlerde yüksek mertebeden harmonik üretim süreçlerine, kuantum mekaniksel ve analitik çözümler sunulacaktır. Güçlü lazer alanı varlığındaki hesaplamalarda, göreli olmayan Schrödinger dalga denklemi ve dipol yaklaşıklığın bozulduğu multifoton süreçlerin, basit tanımları irdelenmiştir. Manyetik alan bileşenin 1/c mertebesinde olduğu için dipol olmayan etkilerin yüksek mertebeden harmonik üretime katkıları tartışılmıştır. Bunun ardından güçlü alan yaklaşıklığının tanımı ile tek elektronlu atomik sistemler için yüksek mertebeden harmonik üretimin yarı klasik modeli ve tamamen kuantum mekaniksel nicelikleri ele alınmıştır. Güçlü alanda geleneksel olarak ‘saddlepoint’ yaklaşımı altında uzunluk ayar dönüşümü ile harmonik spektrum için çözümler analiz edilmiştir. Son yıllarda yüksek harmonik üretim için kaynak olan attosaniye atımlar (10-18 saniye), elektronların dinamiği için güncel araştırma konusu olmuştur. Günümüzde, yüksek mertebeden harmonik üretim tarafından sentezlenen attosaniye atımları birçok bilimsel çalışmada kaynak olarak kullanılmıştır. Bu derleme çalışma ve sonuçları, atomik fizik teknikleriyle incelenmeye başlanan yüksek mertebeden harmonik üretim, optik ve enerji alanlarında oldukça heyecan verici sonuçlar elde edilen geniş bir uygulama alanına ışık tutmuştur.

Anahtar Kelimeler:

Attosaniye atımlar, multifoton süreçler, bir elektronlu atomik sistemler, foton enerji, güçlü lazer alanı

Super Intensity Laser Fields Interacted with Atomic System in Multiphoton Processes: Non-Dipole and Non-Relativistic Effects

As a result of interaction of laser pulses with one-electron atomic systems described that analytic and quantum theory of high harmonic generation by a multiphoton strong-field process. In this study explained that non-relativistic Schrödinger equation and dipole approximation is inconclusive when the single atom interacted with in strong laser field based on simple characterization of multiphoton process. Furthermore, all the calculation discusses how non–dipole influence of order 1/c due to magnetic field component of laser pulse, effects harmonic generation. After that, generation of high order harmonic in single atoms within framework of strong field approximation in semi-classical and quantum mechanical model which have analyzed by the saddle point approximation. In recent years, taking into consideration to the results of this research topic is produced the high harmonic orders as a source of attosecond pulses (10-18 seconds) which could investigate for dynamics of electron in atoms. Nowadays, attosecond pulses synthesized by high order harmonic generation have been used as a source in many scientific studies. By this review study, has offered a solution of high harmonic generation, large application and search area that uses new invented optical techniques and energy production.

Keywords:

Attosecond pulses, multiphoton process, one-electron atomic systems, photon energy, strong laser field,

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