Generation of femtosecond optical vortices by molecular modulation in a Raman-active crystal

Zhi, Mingjia; Wang, K.; Strohaber, James; Sokolov, Alexei V.

doi:10.1364/cleo_qels.2013.qm3e.1

Cited by 1 publication

(3 citation statements)

References 6 publications

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“…In these experiments, topological charge measurements verified a predicted orbital angular momentum algebra (OAM-algebra). This OAM-algebra was later verified in experiments given in [16,17]. In [16] the authors employed two optical parametric amplifiers to produce two spectrally separated beams that were crossed in a Raman active crystal, and in [17] the authors utilized a dichroic beam splitter and spectral filters.…”

Section: Introductionmentioning

confidence: 79%

“…The central wavelength was 800 nm, and the energy per pulse was ~1 mJ. Output radiation from the laser was sent through a variable iris to control both mode quality [16] and beam power in the setup. Following the iris, the radiation was sent through a fourport Michelson interferometer Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Recently a number of investigations involving the nonlinear interaction of optical vortices with matter appeared in the literature [15][16][17]. In experiments presented in [15], the authors crossed time-delayed chirped pulses in a lead tungsten PbWO 4 crystal and demonstrated for the first time the coherent transfer of optical angular momentum in the generation of cascaded Raman sidebands.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Cascade Raman sideband generation and orbital angular momentum relations for paraxial beam modes

Strohaber¹,

Abul²,

Richardson³

et al. 2015

Opt. Express

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In this work, the nonlinear parametric interaction of optical radiation in various transverse modes in a Raman-active medium is investigated both experimentally and theoretically. Verification of the orbital angular momentum algebra (OAM-algebra) [Strohaber et al.,Opt. Lett.37,3411 (2012)] was performed for high-order Laguerre Gaussian modes ℓ>1. It was found that this same algebra also describes the coherent transfer of OAM when Ince-Gaussian modes were used. New theoretical considerations extend the OAM-algebra to even and odd Laguerre Gaussian, and Hermite Gaussian beam modes through a change of basis. The results of this work provide details in the spatiotemporal synthesis of custom broadband pulses of radiation from Raman sideband generation.

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