Diffraction of an ultrashort pulse by an aperture

Lebedev, M. K.; Tolmachev, Yu. A.

doi:10.1134/1.1358450

Cited by 15 publications

(12 citation statements)

References 1 publication

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“…Application of this formula to the field behind the screen revealed [12,13,14] that it comprised only two components: V(P,t)= VG(P,t)+VB(P,t) -VG ('t) is the part of incident plane wave cut out of the initial one by the aperture; this part propagates in space without any change of its form, its transverse amplitude distribution is proportional to T(x, y); -VB ('t) is the wave excited by the edge of the aperture (or any other spatial heterogeneity of its transparency).…”

Section: Basic Relationsmentioning

confidence: 98%

“…The most popular diffraction problem of the elementary physical optics is that of the plane wave diffraction from the circular aperture of a radius. Solution of this problem using 8 -wave approach was given in [12,14] and contained only Position of observation points: P1 is before the screen, P2 is in the illuminated zone out of z-axis, P3 is at z-axis, P4 is in the shadow.…”

Section: Pulse Response Of the Circular Aperturementioning

confidence: 99%

“…However, it seems to be handy for the description of short pulses propagation. Moreover, it was shown in [12,14] that the method can clarify some features of diffracted wave that can give a key to a fine experiment realization.…”

Section: Introductionmentioning

confidence: 98%

“…The technique based on 8 -wave ideas proposed in our previous publications [12,13,14]. Those papers demonstrated the simplicity of interpretation of spatial and temporal form of the diffracted wave transformation using the pulse approach.…”

Section: Introductionmentioning

confidence: 99%

“…To analyze whether the obtained form of the pulse response for the circular aperture does not contradict to classical theory, we applied the relations received in [12,14] for the analysis of monochrome plane wave diffraction. Two different approaches were used: the first was in direct calculation of angular distribution of the field amplitude in the Fraunhofer zone of diffraction, the second was in the detailed calculation of the field in the vicinity of the aperture.…”

mentioning

confidence: 99%

See 4 more Smart Citations

New approach to the analysis of ultrashort pulse diffraction (Invited Paper)

Tolmachev

Lebedev

Фроленкова

et al. 2005

13th International School on Quantum Electronics: Laser Physics and Applications

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Section: Basic Relationsmentioning

confidence: 98%

Section: Pulse Response Of the Circular Aperturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

New approach to the analysis of ultrashort pulse diffraction (Invited Paper)

Tolmachev

Lebedev

Фроленкова

et al. 2005

13th International School on Quantum Electronics: Laser Physics and Applications

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Unipolar light: existence, generation, propagation, and impact on microobjects

2020

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A review is presented of recent works on optical unipolar pulses, whose electric area (integral of the electric field strength over time) is nonzero, which determines the predominant direction of the electric field strength. It is shown that the existence of unipolar pulses does not contradict Maxwell’s equations, and that unipolar pulses can propagate in waveguides. It is emphasised that, along with the spectral, energy, and polarisation parameters, the electric area of short light pulses is also an important characteristic. The unidirectional action of these pulses on microobjects indicates that it is promising to develop methods for generating radiation with such properties. We disciuss methods for the generation, propagation, and interaction of unipolar light with classical and quantum systems, as well as methods for recording the electric area of light pulses.

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Resonant high-energy bremsstrahlung of ultrarelativistic electrons in the field of a nucleus and a weak electromagnetic wave

Dubov

Roshchupkin

2020

Laser Phys. Lett.

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The actual theoretical research investigates the resonant spontaneous bremsstrahlung (RSB) of ultrarelativistic electrons under the condition of scattering on a nucleus in the field of a weak electromagnetic wave. The progression of the functional mechanism indicates the transformation of the intermediate virtual electron into the real particle state. As a result, the initial second order process with accordance to the fine structure constant in the light field productively splits into two consequent first order formations: the laser-stimulated Compton effect and the laser-assisted scattering of an electron on a nucleus. Precise examination specifies the resonant kinematics of the RSB system that designate the phenomenon of the initial and final electrons with addendum of spontaneous high-energy photon propagation in the narrow angle cone. Furthermore, it is important to emphasize that the resonance escalation possesses a possibility to develop within two reaction channels. Thus, the first channel delineates the occurrence that correlates to the spontaneous photon emission by an electron (laser-stimulated Compton interaction) with subsequent scattering on a nucleus (laser-assisted Mott procedure). The second channel illustrates the configuration corresponding to the electron scattering on a nucleus with consecutive spontaneous photon emission in the wave field. Therefore, with implementation of the equivalent elementary criteria the value of the resonant frequency for the first channel perpetually represents a deteriorative counterpart to the second alternative. Moreover, the spontaneous photon radiation angle allocates a single-valued dependency with the resonant frequency for the first channel in contrast to the second displacement that categorizes a composite area with three various resonant frequency magnitudes for the particular emission angle diapason. The project data analysis proposes that the reaction channels do not interfere within the whole range of observation with a specific evaluation for the particles propagation at zero scattering angle. As a result of the investigation the calculations determine the scattering differential cross-section of the resonant construct development. To summarize, the particular cross-section within the resonant ambience significantly exceeds the according cross-section in the approximation of an external field absence. In conclusion, numerous scientific facilities with specialization in pulsed laser radiation (SLAC, FAIR, XFEL, ELI, XCELS) may experimentally validate the computational estimations.

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Diffraction of an ultrashort pulse by an aperture

Cited by 15 publications

References 1 publication

New approach to the analysis of ultrashort pulse diffraction (Invited Paper)

New approach to the analysis of ultrashort pulse diffraction (Invited Paper)

Unipolar light: existence, generation, propagation, and impact on microobjects

Resonant high-energy bremsstrahlung of ultrarelativistic electrons in the field of a nucleus and a weak electromagnetic wave

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