Novel phenomena at stimulated Brillouin scattering of vortex laser beams

Starikov, F. A.; Кочемасов, Г. Г.

doi:10.1016/s0030-4018(01)01244-5

Cited by 9 publications

(16 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such exceptional Stokes mode is the principal Gaussian mode. In the present work we conduct the experiments on SBS of the focused vortex doughnut LG 0 1 mode and demonstrate the confirmation of predicted new phenomena at SBS of vortex beams [3,4].…”

Section: Introductionsupporting

confidence: 59%

“…The situation, when there are the equal competitive modes on level with the conjugated one, is not inherent for the phase conjugation. Strictly speaking, phase conjugation as the phenomenon does not occur due to the selection failure of conjugated mode [3]. Fig.3,a and Fig.3,b, respectively.…”

Section: Analysis Of Stokes Radiation At Steady-state Linear Sbsmentioning

confidence: 95%

“…However in the SBS case at direct focusing of vortex beams the phase conjugation is not observed and the SBS process shows a number of new unusual phenomena. As the perturbation theory analysis and 3D numerical calculations of linear SBS [3] and non-steady-state calculations of saturated SBS [4] of directly focused vortex laser beams have been shown, the phase conjugation of such beams (in particular, the doughnut LG 0 1 mode) is impossible owing to failure of selection of conjugated Stokes mode since there are a few Stokes modes, which have an amplification coefficient the same as that of conjugated mode. For rather wide class of vortex beams (for example, in the case of a LG 1 1 laser mode with two rings), a novel phenomenon takes place that can be called as the phase transformation at SBS.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

<title>New phenomena at stimulated Brillouin scattering of Laguerre-Gaussian laser modes: theory, calculation, and experiments</title>

et al. 2008

View full text Add to dashboard Cite

New phenomenon predicted earlier -failure of phase conjugation at the stimulated Brillouin scattering (SBS) of focused laser beams with screw dislocation of phase front (Laguerre-Gaussian vortex modes) -has been experimentally confirmed Phase conjugation of vortex beams does not take place as a phenomenon because of failure of selection of Stokes mode conjugated to laser one. It occurs since the SBS amplification coefficient does not depend on the laser field phase, and the Stokes field does not "feel" how the laser phase helix is twisted. Therefore the amplification coefficients of a Stokes conjugated mode and an analogous mode of opposite helicity are equal to each other. For example, in the case of a doughnut laser LG 0 1 mode the Stokes beam consists of a random superposition of a few modes including conjugated one. For rather wide class of vortex beams (for example, in the case of a laser LG 1 1 mode with two rings), a novel phenomenon takes place that can be called as phase transformation at SBS. Its essence is in the fact that in Stokes beam a mode with regular phase front is selected, which is orthogonal to laser mode at all. In the near-threshold SBS regime, this selected mode is close to a principal Gaussian mode. At SBS of the vortex laser beam the generation of the vortex hypersonic wave takes place in the SBS-medium so that the topologic charge in the system "Stokes wave+hypersonic wave" is equal to the charge of incident laser wave.

show abstract

Section: Introductionsupporting

confidence: 59%

Section: Analysis Of Stokes Radiation At Steady-state Linear Sbsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

<title>New phenomena at stimulated Brillouin scattering of Laguerre-Gaussian laser modes: theory, calculation, and experiments</title>

et al. 2008

View full text Add to dashboard Cite

show abstract

“…As shown in Fig. 6(b), the SBS signal did not maintain the annular profile any more, that is the phase conjugation did not occur due to the failure of selection of the conjugated mode [17] . During the SBS process, each elementary optical vortex belonging to the speckle pattern emits an acoustical vortex wave with doubled TC.…”

mentioning

confidence: 88%

“…[15,16] the SBS signal was pumped by a Gaussian beam, but not a vortex beam, and converted to a vortex beam with a spiral phase plate (SPP). As the theoretical forecasts and experimental demonstration [17] , the Stokes beam generated by a directly focused vortex laser beam represents a random combination of different modes, as they have the same amplification coefficient. Therefore, it is impossible to achieve the SBS phase conjugation of a directly focused vortex beam.…”

mentioning

confidence: 99%

Stimulated Brillouin scattering phase conjugation of light beams carrying orbit angular momentum (Invited Paper)

Chen

Chang

2017

Chin. Opt. Lett.

View full text Add to dashboard Cite

We investigate the stimulated Brillouin scattering (SBS) properties of light beams carrying orbit angular momentum (OAM). The phase conjugation of light beams carrying OAM is experimentally achieved in an SBS mirror with a random phase plate. The spectrum and the pulse width compression of SBS light are measured. It is shown that the phenomena of pulse compression is observed and OAM conservation is confirmed in the SBS process. The OAM transfer from photons to phonons may find potential applications in photon-phonon conversion-based signal-processing schemes by using OAM multiplexing.

show abstract

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

Qi,

Chen,

Yan

et al. 2024

Laser & Photonics Reviews

View full text Add to dashboard Cite

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.

show abstract

Novel phenomena at stimulated Brillouin scattering of vortex laser beams

Cited by 9 publications

References 10 publications

<title>New phenomena at stimulated Brillouin scattering of Laguerre-Gaussian laser modes: theory, calculation, and experiments</title>

<title>New phenomena at stimulated Brillouin scattering of Laguerre-Gaussian laser modes: theory, calculation, and experiments</title>

Stimulated Brillouin scattering phase conjugation of light beams carrying orbit angular momentum (Invited Paper)

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

Contact Info

Product

Resources

About