Circularly Polarized High Harmonics in Argon: Dipole and Non-Dipole Effect

Yıl 2023, , 188 - 196, 30.06.2023

Dilan Alp , İlhan Candan

https://doi.org/10.29132/ijpas.1269696

Öz

The interaction of the intense laser pulse, which forms the basis of the strong laser field and non-linear optical physics, with atoms, molecules, and solids leads to the High Order Harmonic Generation (HHG). There are many theoretical and experimental research related to this process defined by the Semi-Classic Model which is called the Three Step Model. In this article, the dipole and non-dipole effects specified in the theoretical Lewenstein model to be used in the Argon atom interacting with the strong circular laser field (800nm) and the resulting higher order harmonic spectrum will be investigated. We compared the results obtained using the non-collinear beams with opposite circular polarizations with those obtained using a single circularly polarized beam or a linearly polarized beam. It could be said that the circular polarization can significantly affect the HHG process in an argon atom exposed to a laser field with 800 nm wavelength and 1015 W/cm2 intensity.

Anahtar Kelimeler

Argon, high harmonic generation, dipole, non-dipole

Destekleyen Kurum

Şırnak Üniversitei

Proje Numarası

2019.FNAP.06.03.01, 2019

Teşekkür

This research has been supported by Şırnak University Scientific Research Projects Coordination Unit. Project Number: 2019.FNAP.06.03.01, 2019. A part of this work presented at the Turkish Physical Society 35.th International Physics Congress.

Argonda Dairesel Polarize Yüksek Harmonikler: Dipol ve Dipol Olmayan Etki

Öz

Güçlü lazer alanının ve doğrusal olmayan optik fiziğin temelini oluşturan yoğun lazer darbesinin atomlar, moleküller ve katılarla etkileşimi, Yüksek Dereceli Harmonik Üretime (HHG) yol açar. Üç Adım Modeli olarak adlandırılan Yarı Klasik Model ile tanımlanan bu süreçle ilgili birçok teorik ve deneysel araştırma mevcuttur. Bu makalede, güçlü dairesel lazer alanı (800nm) ile etkileşen Argon atomunda kullanılacak teorik Lewenstein modelinde belirtilen dipol ve dipol olmayan etkiler ve bunun sonucunda ortaya çıkan yüksek dereceli harmonik spektrum incelenecektir. Zıt dairesel polarizasyonlara sahip doğrusal olmayan ışınlar kullanılarak elde edilen sonuçları, tek bir dairesel polarize ışın veya doğrusal polarize bir ışın kullanılarak elde edilen sonuçlarla karşılaştırdık. 800 nm dalga boyunda ve 1015 W/cm2 yoğunlukta bir lazer alanına maruz bırakılan bir argon atomunda dairesel polarizasyonun HHG sürecini önemli ölçüde etkileyebileceği söylenebilir.

Anahtar Kelimeler

Argon, yüksek harmonik üretimi, dipol, dipol olmayan

Proje Numarası

2019.FNAP.06.03.01, 2019

Kaynakça

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