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High Orbital Angular Momentum Harmonic Generation

Abstract:
We identify and explore a high orbital angular momentum (OAM) harmonics generation and amplification mechanism that manipulates the OAM independently of any other laser property, by preserving the initial laser wavelength, through stimulated Raman backscattering in a plasma. The high OAM harmonics spectra can extend at least up to the limiting value imposed by the paraxial approximation. We show with theory and particle-in-cell simulations that the orders of the OAM harmonics can be tuned according to a selection rule that depends on the initial OAM of the interacting waves. We illustrate the high OAM harmonics generation in a plasma using several examples including the generation of prime OAM harmonics. The process can also be realized in any nonlinear optical Kerr media supporting three-wave interactions.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevLett.117.265001

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Publisher:
American Physical Society
Journal:
Physical Review Letters More from this journal
Volume:
117
Issue:
26
Publication date:
2016-12-20
Acceptance date:
2016-11-03
DOI:
EISSN:
1079-7114
ISSN:
0031-9007


Pubs id:
pubs:666917
UUID:
uuid:86e7e78f-65e9-4e88-9936-69f09a05c0b5
Local pid:
pubs:666917
Source identifiers:
666917
Deposit date:
2016-12-22

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