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Spatial Profiling of Femtosecond Pulses in an Optical Parametric Amplification System.

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Title: Spatial Profiling of Femtosecond Pulses in an Optical Parametric Amplification System.
Authors: Stepanov, E. A.1,2 (AUTHOR), Aliev, R. M.2 (AUTHOR), Voronin, A. A.1,2 (AUTHOR), Savitsky, I. V.1,2 (AUTHOR), Lanin, A. A.2,3 (AUTHOR), Fedotov, A. B.1,2 (AUTHOR) a.b.fedotov@physics.msu.ru
Source: JETP Letters. Mar2026, Vol. 123 Issue 6, p422-428. 7p.
Subjects: Femtosecond pulses, Optical parametric amplifiers, Light filters, Optical pulse generation, Computer simulation
Abstract: The use of non-uniform filters with a controlled spatial absorption profile has improved the spatiotemporal profile of amplified signal and idler pulses in a two-stage parametric amplification scheme for femtosecond pulses. The measured dependence of the signal wave emission spectrum on the transverse coordinate reveals high homogeneity with suppression of the central part of the seed pulse beam, while the 2+1-dimensional numerical simulation of the parametric amplification process for femtosecond pulses predicts a corresponding increase in the homogeneity of the temporal profile of the signal and idler pulses and a decrease in their duration. The efficiency of the corresponding parametric conversion of submillijoule pulses reaches 50%. [ABSTRACT FROM AUTHOR]
Copyright of JETP Letters is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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  Data: Spatial Profiling of Femtosecond Pulses in an Optical Parametric Amplification System.
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  Data: <searchLink fieldCode="JN" term="%22JETP+Letters%22">JETP Letters</searchLink>. Mar2026, Vol. 123 Issue 6, p422-428. 7p.
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  Data: The use of non-uniform filters with a controlled spatial absorption profile has improved the spatiotemporal profile of amplified signal and idler pulses in a two-stage parametric amplification scheme for femtosecond pulses. The measured dependence of the signal wave emission spectrum on the transverse coordinate reveals high homogeneity with suppression of the central part of the seed pulse beam, while the 2+1-dimensional numerical simulation of the parametric amplification process for femtosecond pulses predicts a corresponding increase in the homogeneity of the temporal profile of the signal and idler pulses and a decrease in their duration. The efficiency of the corresponding parametric conversion of submillijoule pulses reaches 50%. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of JETP Letters is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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              Text: Mar2026
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