Quality of wavefront reversal of multifrequency radiation by four-wave interaction

Ерохин, А. И.; Kovalev, V. F.; Mikheev, P. A.; Faǐzullov, F. S.

doi:10.1070/qe1985v015n01abeh005879

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(1) where is the gain coefficient and mj 'Pm 'Pj kSj 'Sm (2) is the four-wave mixing wavevector mismatch. Modificatiois to the theory to account for smaller separations could be Ione using mode space expansions,L which generally have a small effect on the results.…”

Section: Raman Spectral Fanningmentioning

confidence: 99%

See 1 more Smart Citation

Beam-quality degradation in broadband noncollinear Raman amplifiers

et al. 1990

View full text Add to dashboard Cite

In a Raman amplifier having a broadband pump beam which is not exactly collinear with the Stokes seed beam, the Stokes output spectrum will be "fanned", i.e., angularly dispersed, because the direction of maximum gain differs for growth of each component of the Stokes spectrum. The spectral fanning produces transverse phase and intensity variations which degrade the Stokes output. Approximate analytic expressions are given for beam quality degradation in cases where the Stokes seed is narrowband, broadband and temporally correlated to the pump beam, -or broadband and uncorrelated. The effect is predicted to be usually negligible, but can be significant for cases of very large beam aperture sizes, bandwidths and/or angles. Use of a diffraction grating in the output Stokes beam or a stepped mirror in the input pump beam are proposed for reducing the effect.

show abstract

Section: Raman Spectral Fanningmentioning

confidence: 99%

“…Modificatiois to the theory to account for smaller separations could be Ione using mode space expansions,L which generally have a small effect on the results. (1). The Stokes beam centered at frequency w5 builds up a corrsponding Raman-shifted line of slowly varying envelope amplitude Sj for each pump line.…”

Section: Raman Spectral Fanningmentioning

confidence: 99%