Probability of absorption and emission by an atom interacting with ultrashort laser pulses

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Probability of absorption and emission by an atom interacting with ultrashort laser pulses. / Александров, Иван Александрович ; Чубуков, Дмитрий Валерьевич ; Розанов, Николай Николаевич.

In: OPTICS AND SPECTROSCOPY, Vol. 132, No. 2, 07.08.2024, p. 81-85.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{a24b18c1539b476d8c57df67406ec4f8,

title = "Probability of absorption and emission by an atom interacting with ultrashort laser pulses",

abstract = "Abstract: We consider the process of transition of a two-level system to the excited state with subsequent photon emission in the presence of a laser pulse with a high degree of unipolarity. Within the framework of quantum electrodynamics, we obtain analytical expressions for the differential probability of the process depending on the temporal scales of the problem: laser pulse duration, excited-state lifetime, inverse transition frequency, and inverse frequency of the photon emitted. Besides, we calculate the total absorption probability by integrating over the three-dimensional photon momentum and summing over polarizations. We compare the results obtained for unipolar and bipolar (many-cycle) pulses.",

keywords = "absorption, emission, laser field, two-level system, ultrashort pulses",

author = "Александров, {Иван Александрович} and Чубуков, {Дмитрий Валерьевич} and Розанов, {Николай Николаевич}",

year = "2024",

month = aug,

day = "7",

doi = "10.1134/s0030400x24020012",

language = "English",

volume = "132",

pages = "81--85",

journal = "OPTICS AND SPECTROSCOPY",

issn = "0030-400X",

publisher = "Pleiades Publishing",

number = "2",

}

RIS

TY - JOUR

T1 - Probability of absorption and emission by an atom interacting with ultrashort laser pulses

AU - Александров, Иван Александрович

AU - Чубуков, Дмитрий Валерьевич

AU - Розанов, Николай Николаевич

PY - 2024/8/7

Y1 - 2024/8/7

N2 - Abstract: We consider the process of transition of a two-level system to the excited state with subsequent photon emission in the presence of a laser pulse with a high degree of unipolarity. Within the framework of quantum electrodynamics, we obtain analytical expressions for the differential probability of the process depending on the temporal scales of the problem: laser pulse duration, excited-state lifetime, inverse transition frequency, and inverse frequency of the photon emitted. Besides, we calculate the total absorption probability by integrating over the three-dimensional photon momentum and summing over polarizations. We compare the results obtained for unipolar and bipolar (many-cycle) pulses.

AB - Abstract: We consider the process of transition of a two-level system to the excited state with subsequent photon emission in the presence of a laser pulse with a high degree of unipolarity. Within the framework of quantum electrodynamics, we obtain analytical expressions for the differential probability of the process depending on the temporal scales of the problem: laser pulse duration, excited-state lifetime, inverse transition frequency, and inverse frequency of the photon emitted. Besides, we calculate the total absorption probability by integrating over the three-dimensional photon momentum and summing over polarizations. We compare the results obtained for unipolar and bipolar (many-cycle) pulses.

KW - absorption

KW - emission

KW - laser field

KW - two-level system

KW - ultrashort pulses

UR - https://www.mendeley.com/catalogue/1784e1f8-b729-30b6-b89f-2e5a6c958bba/

U2 - 10.1134/s0030400x24020012

DO - 10.1134/s0030400x24020012

M3 - Article

VL - 132

SP - 81

EP - 85

JO - OPTICS AND SPECTROSCOPY

JF - OPTICS AND SPECTROSCOPY

SN - 0030-400X

IS - 2

ER -

ID: 122783024