Wavelength-Dependent Non-Sequential Double Ionization of Diatomic Molecules N<sub>2</sub> and O<sub>2</sub> in Intense Femtosecond Laser Fields

Zhiyang Lin; You Chen

doi:10.3788/AOS202242.1302001

Acta Optica Sinica, Volume. 42, Issue 13, 1302001(2022)

Wavelength-Dependent Non-Sequential Double Ionization of Diatomic Molecules N₂ and O₂ in Intense Femtosecond Laser Fields

Zhiyang Lin^* and You Chen

Author Affiliations

College of Information Science and Engineering, Fujian Key Laboratory of Optical Beam Transmission and Transformation, Huaqiao University, Xiamen 361021, Fujian , China

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Figures & Tables(6)

Fig. 1. Schematic diagram for experimental setup and light path

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Fig. 2. Yields of Xe⁺ and Xe²⁺ as functions of laser intensity for various wavelengths, and ratio of NSDI field as a function of laser intensity of Xe for various wavelengths. Yields of Xe⁺ and Xe²⁺ as functions of laser intensity for (a) 800 nm, (b) 1250 nm, and (c) 1500 nm; (d) ratio of NSDI field (i.e., ratio of Xe²⁺ yield to Xe⁺ yield) as a function of laser intensity of Xe for various wavelengths (inset is enlarged flat region)

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Fig. 3. Yields of Ar⁺ and Ar²⁺ as functions of laser intensity for various wavelengths and ratio of NSDI field for Ar as a function of laser intensity for various wavelengths. Yields of Ar⁺ and Ar²⁺ as functions of laser intensity for (a) 800 nm, (b) 1250 nm, and (c) 1500 nm; (d) ratio of NSDI field for Ar as a function of laser intensity for various wavelengths (inset is enlarged flat region)

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Fig. 4. Yields of O $_{2}^{+}$ and O $_{2}^{2 +}$ as functions of laser intensity for various wavelengths and ratio of NSDI for O₂ as a function of laser intensity for various wavelengths. Yields of O $_{2}^{+}$ and O $_{2}^{2 +}$ as functions of laser intensity for (a) 800 nm, (b) 1250 nm, and (c) 1500 nm; (d) ratio of NSDI for O₂ as a function of laser intensity for various wavelengths (inset is enlarged flat region)

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Fig. 5. Yields of N $_{2}^{+}$ and N $_{2}^{2 +}$ as functions of laser intensity for various wavelengths and ratio of NSDI for N₂ as a function of laser intensity for various wavelengths. Yields of N $_{2}^{+}$ and N $_{2}^{2 +}$ as functions of laser intensity for (a) 800 nm, (b) 1250 nm, and (c) 1500 nm; (d) ratio of NSDI for N₂ as a function of laser intensity for various wavelengths ( inset is enlarged flat region)

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Fig. 6. Ratios of NSDI fields of Xe and O₂ as functions of laser intensity and ratios of NSDI field of Ar and N₂ as functions of laser intensity for different wavelengths. Ratios of NSDI fields of Xe and O₂ as functions of laser intensity for (a) 800 nm, (b) 1250 nm, and (c) 1500 nm; ratios of NSDI fields of Ar and N₂ as functions of laser intensity for (d) 800 nm, (e) 1250 nm, and (f) 1500 nm

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Zhiyang Lin, You Chen. Wavelength-Dependent Non-Sequential Double Ionization of Diatomic Molecules N₂ and O₂ in Intense Femtosecond Laser Fields[J]. Acta Optica Sinica, 2022, 42(13): 1302001

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Paper Information

Category: Atomic and Molecular Physics

Received: Jan. 24, 2022

Accepted: Mar. 7, 2022

Published Online: Jul. 15, 2022

The Author Email: Lin Zhiyang (suthing@hqu.edu.cn)

DOI:10.3788/AOS202242.1302001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology