Interference theory of multiple optical vortex states in spiral phase plate etalon: thick-plate and thin-plate approximation

Rumala, Yisa S.

doi:10.1364/josab.31.0000a6

Cited by 15 publications

(10 citation statements)

References 48 publications

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“…10(c)] reproduces the simulated intensity distribution. Even if an antireflection coating was not present on the surface of the analyzed SPPs, the far-field intensity pattern appears not to be affected by an azimuthal modulation due to multiple internal reflections, as predicted and described in recent literature [31][32][33][34]. On the other hand, this effect could have been hidden by the noise due to signal fluctuation and further analyses could be required in order to unveil this phenomenon [33].…”

Section: Resultssupporting

confidence: 60%

Fabrication and characterization of high-quality spiral phase plates for optical applications

Massari

Ruffato

Gintoli³

et al. 2015

Appl. Opt.

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The discovery that light beams with a helical phase front carry orbital angular momentum (OAM) has enabled applications in many fields ranging from optical manipulation to quantum information processing and, recently, free-space information transfer and communications. Here, a novel three-dimensional fabrication process by electron beam lithography was finely tuned in order to realize high-quality spiral phase plates (SPPs) for the generation of OAM-carrying optical beams. Single-and multi-step SPPs have been realized for the generation of high-order Laguerre-Gaussian beams with different values of topological charge and radial index. The optical response of these optical elements was experimentally investigated and compared with theoretical models.

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Section: Resultssupporting

confidence: 60%

Fabrication and characterization of high-quality spiral phase plates for optical applications

Massari

Ruffato

Gintoli³

et al. 2015

Appl. Opt.

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“…67 The thin-plate approximation does not explicitly take into account the angle between the flat surface and azimuthally increasing step height, while the thick-plate approximation explicitly takes this angle into consideration. 67 The thin-plate approximation does not explicitly take into account the angle between the flat surface and azimuthally increasing step height, while the thick-plate approximation explicitly takes this angle into consideration.…”

Section: Thick-plate and Thin-plate Approximationsmentioning

confidence: 99%

“…As the output intensity of an SPP etalon in the thick-plate approximation and thin-plate approximation has been previously calculated, 67 this section provides a summary of the main results. It has been shown that in the low finesse regime (i.e., low surface reflectivity regime) of an SPP etalon, the output intensity in the thin-plate approximation and thickplate approximation provides consistent results.…”

Section: Thick-plate and Thin-plate Approximationsmentioning

confidence: 99%

“…67 The value, β, does not only serve as a factor quantifying the phase difference between optical vortices of different winding numbers, but it also gives the number of angular intensity peaks due to the coherent optical vortex superposition in a 2π rad angle. 67 The value, β, does not only serve as a factor quantifying the phase difference between optical vortices of different winding numbers, but it also gives the number of angular intensity peaks due to the coherent optical vortex superposition in a 2π rad angle.…”

Section: Thick-plate and Thin-plate Approximationsmentioning

confidence: 99%

“…2 possess OAM even though they do not all resemble the conventional donut intensity pattern. 67 It is due to the presence of OAM that a vortex core forms as the beam propagates into the far field, and it is due to a coherent superposition of OAM states that there is an intensity modulation as a function of azimuthal angle. 2 would be in only one OAM state; in this case, it will be the l ≈ 1 state.…”

Section: Propagation Of Optical Vortices Emerging From Spiral Phase Pmentioning

confidence: 99%

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Propagation of structured light beams after multiple reflections in a spiral phase plate

Rumala

2015

Opt. Eng

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Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 08/25/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspxAbstract. This work presents propagation dynamics of structured light (complex light) containing optical vortices after it has undergone multiple reflections in a spiral phase plate (SPP) device having a nonzero surface reflection. In the calculations, the thick-plate approximation is assumed as it is expected to give a more accurate representation of the standard geometry of an SPP device from a low-surface reflection to a high-surface reflection. Calculations showing the propagation of counter-rotating optical vortices are presented, and the effect of the statistical nature of photons on the observation of the angular intensity modulation of the beam is discussed. Rumala: Propagation of structured light beams after multiple reflections in a spiral phase plate Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 08/25/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx Optical Engineering 111306-8 November 2015 • Vol. 54(11) Rumala: Propagation of structured light beams after multiple reflections in a spiral phase plate Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 08/25/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx

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Bifurcation and nonlinear dynamics in passive Q-switched optical vortex lasers

Lin

Lee

et al. 2019

J. Opt.

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In a laser resonator with an intra-cavity spiral phase plate, a passive Q-switched pulsed vortex laser carrying a positive unit topological charge is formed by the coherent superposition of the supported off-axis multiple-pass transverse (MPT) resonant modes. Under different pumping conditions, the modal interaction induces spatiotemporal instability and results in periodic and aperiodic oscillations in the vortex laser pulses while the vortex structure remains stable. The constituting off-axis MPT modes that form the vortex strongly overlap in the time domain and can be simulated by a modified Tang–Statz–DeMars model including coherent modal interactions. Expected potential applications using this vortex laser include the manipulation of laser chaos and stochastic events.

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Interference theory of multiple optical vortex states in spiral phase plate etalon: thick-plate and thin-plate approximation

Cited by 15 publications

References 48 publications

Fabrication and characterization of high-quality spiral phase plates for optical applications

Fabrication and characterization of high-quality spiral phase plates for optical applications

Propagation of structured light beams after multiple reflections in a spiral phase plate

Bifurcation and nonlinear dynamics in passive Q-switched optical vortex lasers

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