Tracing Evolution of Angle-Wavelength Spectrum along the 40-m Postfilament in Corridor Air

Dmitry Skryabin

doi:10.3390/photonics8100446

Tracing Evolution of Angle-Wavelength Spectrum along the 40-m Postfilament in Corridor Air

Dmitry Skryabin

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

5 Citations (SciVal)

Abstract

Postfilamentation channel resulting from filamentation of freely propagating 744-nm, 5-mJ, 110-fs pulse in the corridor air is examined experimentally and in simulations. The longitudinal extension of postfilament was determined to be 55–95 m from the compressor output. Using single-shot angle-wavelength spectra measurements, we observed a series of red-shifted maxima in the spectrum, localized on the beam axis with the divergence below 0.5 mrad. In the range 55–70 m, the number of maxima and their red-shift increase with the distance reaching 1 μm, while the pulse duration measured by the autocorrelation technique is approximately constant. Further on, for distances larger than 70 m and up to 95 m, the propagation is characterized by the suppressed beam divergence and unchanged pulse spectrum. The pulse duration increases due to the normal air dispersion

Original language	English
Article number	446
Journal	Photonics
DOIs	https://doi.org/10.3390/photonics8100446
Publication status	Published - 15 Oct 2021

Funding

Funding: This research was funded by Russian Science Foundation grant number 21-12-00109. Acknowledgments: The authors sincerely thank See Leang Chin (Laval University, COPL) for fruitful discussions and supportive guidance, Andrey Koribut (LPI) for taking part in processing beam transverse profiles. I.A.N. acknowledges support from Foundation for the Advancement of Theoretical Physicsand Mathematics (21-2-10-55-1). This research was funded by Russian Science Foundation grant number 21-12-00109. The authors sincerely thank See Leang Chin (Laval University, COPL) for fruitful discussions and supportive guidance, Andrey Koribut (LPI) for taking part in processing beam transverse profiles. I.A.N. acknowledges support from Foundation for the Advancement of Theoretical Physicsand Mathematics (21-2-10-55-1).

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Raman confocal microscope RENISHAM INVIA
Material and Chemical Characterisation (MC2)
Facility/equipment: Equipment

Cite this

@article{6e9ffa20e7f2457295b04191fd5a7bb0,

title = "Tracing Evolution of Angle-Wavelength Spectrum along the 40-m Postfilament in Corridor Air",

abstract = "Postfilamentation channel resulting from filamentation of freely propagating 744-nm, 5-mJ, 110-fs pulse in the corridor air is examined experimentally and in simulations. The longitudinal extension of postfilament was determined to be 55–95 m from the compressor output. Using single-shot angle-wavelength spectra measurements, we observed a series of red-shifted maxima in the spectrum, localized on the beam axis with the divergence below 0.5 mrad. In the range 55–70 m, the number of maxima and their red-shift increase with the distance reaching 1 μm, while the pulse duration measured by the autocorrelation technique is approximately constant. Further on, for distances larger than 70 m and up to 95 m, the propagation is characterized by the suppressed beam divergence and unchanged pulse spectrum. The pulse duration increases due to the normal air dispersion",

author = "Dmitry Skryabin",

year = "2021",

month = oct,

day = "15",

doi = "10.3390/photonics8100446",

language = "English",

journal = "Photonics",

issn = "2304-6702",

publisher = "MDPI",

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TY - JOUR

T1 - Tracing Evolution of Angle-Wavelength Spectrum along the 40-m Postfilament in Corridor Air

AU - Skryabin, Dmitry

PY - 2021/10/15

Y1 - 2021/10/15

N2 - Postfilamentation channel resulting from filamentation of freely propagating 744-nm, 5-mJ, 110-fs pulse in the corridor air is examined experimentally and in simulations. The longitudinal extension of postfilament was determined to be 55–95 m from the compressor output. Using single-shot angle-wavelength spectra measurements, we observed a series of red-shifted maxima in the spectrum, localized on the beam axis with the divergence below 0.5 mrad. In the range 55–70 m, the number of maxima and their red-shift increase with the distance reaching 1 μm, while the pulse duration measured by the autocorrelation technique is approximately constant. Further on, for distances larger than 70 m and up to 95 m, the propagation is characterized by the suppressed beam divergence and unchanged pulse spectrum. The pulse duration increases due to the normal air dispersion

AB - Postfilamentation channel resulting from filamentation of freely propagating 744-nm, 5-mJ, 110-fs pulse in the corridor air is examined experimentally and in simulations. The longitudinal extension of postfilament was determined to be 55–95 m from the compressor output. Using single-shot angle-wavelength spectra measurements, we observed a series of red-shifted maxima in the spectrum, localized on the beam axis with the divergence below 0.5 mrad. In the range 55–70 m, the number of maxima and their red-shift increase with the distance reaching 1 μm, while the pulse duration measured by the autocorrelation technique is approximately constant. Further on, for distances larger than 70 m and up to 95 m, the propagation is characterized by the suppressed beam divergence and unchanged pulse spectrum. The pulse duration increases due to the normal air dispersion

U2 - 10.3390/photonics8100446

DO - 10.3390/photonics8100446

M3 - Letter

SN - 2304-6702

JO - Photonics

JF - Photonics

M1 - 446

ER -

Tracing Evolution of Angle-Wavelength Spectrum along the 40-m Postfilament in Corridor Air

Abstract

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Raman confocal microscope RENISHAM INVIA

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