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Grigoriev KS, Perezhogin IA, Makarov VA. Interconversion between the orbital and spin angular momentum of light beams in three-wave mixing processes in the bulk of an isotropic chiral medium. OPTICS LETTERS 2018; 43:5182-5185. [PMID: 30382962 DOI: 10.1364/ol.43.005182] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 09/17/2018] [Indexed: 06/08/2023]
Abstract
A phenomenological description of nondegenerate and degenerate three-wave mixing in the bulk of an isotropic chiral medium is given for the wide class of fundamental light beams with nonuniform polarization distribution and multimode transverse structure. Special attention is paid to the classical and quantum interpretation of interconversion between spin and orbital parts of the angular momentum of the input and output beams.
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Vieira J, Trines RMGM, Alves EP, Fonseca RA, Mendonça JT, Bingham R, Norreys P, Silva LO. High Orbital Angular Momentum Harmonic Generation. PHYSICAL REVIEW LETTERS 2016; 117:265001. [PMID: 28059529 DOI: 10.1103/physrevlett.117.265001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Indexed: 06/06/2023]
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.
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Affiliation(s)
- J Vieira
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - R M G M Trines
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, OX11 0QX, United Kingdom
| | - E P Alves
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - R A Fonseca
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
- DCTI/ISCTE Lisbon University Institute, 1649-026 Lisbon, Portugal
| | - J T Mendonça
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - R Bingham
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, OX11 0QX, United Kingdom
| | - P Norreys
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, OX11 0QX, United Kingdom
- Department of Physics, University of Oxford, Oxford OX1 3PU, United Kingdom
| | - L O Silva
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
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Tunsiri S, Thammawongsa N, Mitatha S, Yupapin PP. Molecular transport network security using multi-wavelength optical spins. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2014; 44:240-7. [DOI: 10.3109/21691401.2014.940083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Helle MH, Kaganovich D, Gordon DF, Ting A. Measurement of electro-optic shock and electron acceleration in a strongly cavitated laser wakefield accelerator. PHYSICAL REVIEW LETTERS 2010; 105:105001. [PMID: 20867524 DOI: 10.1103/physrevlett.105.105001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2010] [Indexed: 05/29/2023]
Abstract
Conically emitted second harmonic radiation was observed when a relativistically intense, ultrashort laser pulse was focused into a jet of gas. This second harmonic electro-optic shock is the result of frequency mixing within the sheath of electrons surrounding a highly cavitated plasma region created by the ponderomotive force of the laser. Strong correlation between the second harmonic characteristics and electron acceleration has been observed.
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Affiliation(s)
- M H Helle
- Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375, USA
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