Efficient mode transformations of degenerate Laguerre-Gaussian beams

Machavariani, G.; Ishaaya, Amiel A.; Shimshi, Liran; Davidson, Nir; Friesem, Asher A.; Hasman, Erez

doi:10.1364/ao.43.002561

Cited by 16 publications

(6 citation statements)

References 11 publications

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“…We check this approximation at a = 0 and note that it indeed reduces to the product of asymptotic approximations for the usual Airy functions, in which case expression (8) is also purely real.…”

Section: Mathematical Derivation Of the Relation ν (β )mentioning

confidence: 99%

See 1 more Smart Citation

Unveiling the Orbital Angular Momentum and Acceleration of Electron Beams

et al. 2015

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New forms of electron beams have been intensively investigated recently, including vortex beams carrying orbital angular momentum, as well as Airy beams propagating along a parabolic trajectory. Their traits may be harnessed for applications in materials science, electron microscopy, and interferometry, and so it is important to measure their properties with ease. Here, we show how one may immediately quantify these beams' parameters without need for additional fabrication or nonstandard microscopic tools. Our experimental results are backed by numerical simulations and analytic derivation.

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Section: Mathematical Derivation Of the Relation ν (β )mentioning

confidence: 99%

“…In their 1991 article [7] Abramochkin and Volostnikov discussed the mathematics of beam transformations under astig-matic conditions. Since then, different authors proposed and demonstrated mode conversion in lasers [8], linear and nonlinear optics [9,10] and free-electron beams in TEM [11]. In the latter work, Schattschneider et.…”

mentioning

confidence: 99%

Unveiling the Orbital Angular Momentum and Acceleration of Electron Beams

et al. 2015

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“…The "starred" * beams remain propagation-invariant during free-space propagation, and their intra-cavity formation based on two coexisting laser modes has been explored in the past [26][27][28]. Figure 3 shows the formation of the "starred" field distribution for , * based on the superposition of the respective even , and odd , Laguerre-Gaussian beams [29].…”

Section: Formation Of Bessel Beams With Refractive Axiconsmentioning

confidence: 99%

Producing Bessel beams based on incoherent superposition of laser fields

Soskind

2013

SPIE Proceedings

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Bessel beams belong to a class of propagation invariant, structured beams, and are used in a variety of applications, including particle micro-manipulation, optical coherence tomography, optical metrology, and high resolution microscopy. In practical applications, Bessel beams are formed by the interaction of optical fields with finite lateral dimensions. In this paper, we discuss the formation and propagation characteristics of Bessel beams based on input field distributions defined by Laguerre-Gaussian beams of different orders. We present the influence of the beam order on the shape and the axial intensity distribution of the resulting Bessel beams. One of the limiting factors in the applications of Bessel beams is related to the variations in the axial intensity distribution of the produced beams. We show that the incoherent superposition of input Laguerre-Gaussian beams of different orders can resolve the above limitation and produce Bessel beams with uniform peak intensity distributions over an extended axial distance.

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“…Actually, the wavefront correction of a static single HOM has been demonstrated by using the binary phase plate [13][14][15][16] or the interferometric element [17]. However, these rigid devices are not capable to correct the dynamic wavefront of the beam with more than one HOM.…”

Section: Introductionmentioning

confidence: 99%

Adaptive phase correction of dynamic multimode beam based on modal decomposition

Xie¹,

Liu²,

Zhou³

et al. 2019

Opt. Express

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We propose and demonstrate a method for the adaptive wavefront correction of dynamic multimode fiber beams for the first time. The wavefront of incident beam is reconstructed in real-time based on the complete modal information, which obtained by using the modal decomposition of correlation filter method. For the proof of principle, both of the modal decomposition and the wavefront correction are implemented using the same computergenerated hologram, which encoded into a phase-only spatial light modulator. We demonstrate the wavefront correction of dynamic multimode beam at a rate of 5Hz and achieve a 1.73-fold improvement on the average power-in-the-bucket. The experimental results indicate the feasibility of the real-time wavefront correction for the large mode area fiber laser by adaptive optics.

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Efficient mode transformations of degenerate Laguerre-Gaussian beams

Cited by 16 publications

References 11 publications

Unveiling the Orbital Angular Momentum and Acceleration of Electron Beams

Unveiling the Orbital Angular Momentum and Acceleration of Electron Beams

Producing Bessel beams based on incoherent superposition of laser fields

Adaptive phase correction of dynamic multimode beam based on modal decomposition

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