Conjugation and transformation of the wave front by stimulated Brillouin scattering of vortex Laguerre — Gaussian laser modes

Kopalkin, A. V.; Bogachev, V. A.; Dolgopolov, Yu. V.; Кочемасов, Г. Г.; Kulikov, S. M.; Маслов, Н. В.; Starikov, F. A.; Sukharev, S. A.; Feoktistov, V V; Bagdasarov, V Kh; Денисов, Н. Н.; Malyutin, A A

doi:10.1070/qe2011v041n11abeh014614

Cited by 3 publications

(10 citation statements)

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“…It is interesting that the hypersound vortices are formed in the SBS medium in ac-cordance with the law of topologic charge conservation. The predicted effects have been completely confirmed experimentally [52,53,54].…”

Section: Origin Main Properties and Practical Applications Of Opticasupporting

confidence: 62%

“…In [124,54] the formation of the Laguerre-Gaussian LG 0 1 or LG 1 1 modes was performed at the output of a pulsed laser-generator of Hermit-Gaussian HG 01 or HG 21 modes with the help of a tunable astigmatic π/2-converter based on the so-called optical quadrupole [125]. It consists of two similar mechano-optical modules, each of which incorporates the positive and negative cylindrical lenses with the same focal length and a positive spherical lens.…”

Section: Generation Of Optical Vortexmentioning

confidence: 99%

“…To study the phase structure of radiation, in [54] use was made of a special interferometer scheme, where the reference beam was produced from a part of the original Laguerre-Gaussian LG 0 1 or LG 1 1 mode (see Figure 7). As a result, each of the modes interfered with a similar one, but with a topological charge of the opposite sign (the opposite helicity), i.e., with LG 0 -1 or LG 1 -1 mode.…”

Section: Generation Of Optical Vortexmentioning

confidence: 99%

“…As contrasted to the examples of spiral phase plates [140], the plates [142] have a very high laser damage threshold and a working diameter of 2 cm that is larger by an order of magnitude. The high laser damage resistance of such plates allows their use in experiments with powerful laser beams [52][53][54]. The general view of the spiral phase plate is shown in Figure 12.…”

Section: Generation Of Optical Vortexmentioning

confidence: 99%

“…The optical scheme for registration of the phase portrait of a laser beam[54]: 1 -dividing parallel-sided plate, 2 -mirrors, 3 -lens, 4 -CCD camera.…”

mentioning

confidence: 99%

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Adaptive Optics and Optical Vortices

Гаранин¹,

Starikov²,

Malakhov³

2012

Adaptive Optics Progress

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Section: Origin Main Properties and Practical Applications Of Opticasupporting

confidence: 62%

Section: Generation Of Optical Vortexmentioning

confidence: 99%

Section: Generation Of Optical Vortexmentioning

confidence: 99%

Section: Generation Of Optical Vortexmentioning

confidence: 99%

“…The optical scheme for registration of the phase portrait of a laser beam[54]: 1 -dividing parallel-sided plate, 2 -mirrors, 3 -lens, 4 -CCD camera.…”

mentioning

confidence: 99%

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Adaptive Optics and Optical Vortices

Гаранин¹,

Starikov²,

Malakhov³

2012

Adaptive Optics Progress

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Wavefront‐Reversal, Low‐Threshold, and Enhanced Stimulated Brillouin Scattering for Arbitrary Structured Light

Qi,

Chen,

Yan

et al. 2024

Laser & Photonics Reviews

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Structured light with multiple degrees of freedom has inspired many advanced applications, and its nonlinear control plays an important role in the interactions between light and matter. Stimulated Brillouin scattering (SBS) based on light–sound coupling can be used to realize wavefront‐reversal nonlinear reflection of ordinary light; consequently, it is used to correct wavefront aberrations in high‐power laser systems. However, high‐fidelity wavefront reversal of structured light with orbital angular momentum and high‐reflectivity single‐end SBS of weak incident waves remain challenging. Here, the authors propose a cross‐pump focused SBS scheme that enables wavefront reversal with high fidelity, low threshold, and high reflectivity for arbitrary structured light . The authors demonstrate the capability of this approach to perform conformal and enhanced SBS reflections with a fidelity of >95% and reflectivity of >100%. Compared with the conventional focused SBS configuration, the SBS threshold is reduced by more than ten times, and wavefront reversal of weakly structured light is realized. This proof‐of‐principle study provides a high‐performance SBS platform with potential implications for high‐power structured lasers, high signal‐to‐noise‐ratio microscopy imaging, and the development of nonlinear optics with structured light.

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Inhibition of the phase conjugation of orbital angular momentum superpositions in cylindrical vector beams during stimulated Brillouin scattering

Bisson

2022

Phys. Rev. A

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Phase conjugation with stimulated Brillouin scattering can be used to correct wavefront aberrations in high-power laser systems. Here, we consider such process with cylindrical vector lasers beams. By using a vectorial approach and a modal decomposition, we obtain a differential matrix equation that enables the calculation of the structure of Stokes vector eigenmodes and their Brillouin gain. The emphasis is put on the mode with the largest gain, which contributes the most to the Stokes beam. We show that the phase conjugation of orbital angular momentum in cylindrical vector beams is prevented from happening almost everywhere on the higher-order Poincaré sphere. This phenomenon is traced to the tendency of the Stokes beam to acquire a polarization structure similar to the incident pump beam, which constraints the possible combinations of topological charges of the two orbital angular momentum modes making up the Stokes cylindrical vector beams. However, near the poles of the higher-order Poincaré sphere, the Stokes mode with the largest gain acquires an additional helical phase factor that produces the conjugated topological charge for the stronger circularly polarized component without affecting the polarization structure.Experimental results are found to agree with our theoretical predictions.

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Conjugation and transformation of the wave front by stimulated Brillouin scattering of vortex Laguerre — Gaussian laser modes

Cited by 3 publications

References 0 publications

Adaptive Optics and Optical Vortices

Adaptive Optics and Optical Vortices

Wavefront‐Reversal, Low‐Threshold, and Enhanced Stimulated Brillouin Scattering for Arbitrary Structured Light

Inhibition of the phase conjugation of orbital angular momentum superpositions in cylindrical vector beams during stimulated Brillouin scattering

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