Adaptive control of pulse front tilt, the quill effect, and directional ultrafast laser writing

Salter, Patrick S.; Simmonds, Richard; Booth, M. J.

doi:10.1117/12.2005082

Cited by 2 publications

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“…A decisive experiment on that point is the one from Salter et al in 2012 [11,12]. These authors using a SLM (spatial light modulator) produced on one hand PFT of different sign and observed a reversal of AOW but they built also a transversally asymmetric intensity gradient without PFT and produced the same effect in fused silica showing that the gradient intensity is at the basis of the process.…”

Section: Laser Propagationmentioning

confidence: 99%

“…Let us mention here on the way, that they increased the PFT by more than 5 order of magnitude but they do not observed a change of AOW in the same proportion. More recently, Salter et al [11,12] used a SLM (Spatial Light Modulator), a less costly system and more flexible one, for suppressing or reversing the AOW easily by controlling the PFT. They show also that PFT is not necessary for AOW, just an intensity gradient without PFT is able to produce it.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Asymmetric Orientational Writing in glass with femtosecond laser irradiation

Poumellec¹,

Lancry²,

Desmarchelier³

et al. 2013

Opt. Mater. Express

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We review the question on the origin of the differences observed on various properties when we scan the femtosecond laser beam in an isotropic media (i.e. a glass) in two orientations of a given direction. Publications on refractive index changes, birefringence, nanogratings, stress, bubbles formation and on quill writing effects are analyzed. A new interpretation based on space-charge built from ponderomotive force and stored in the dielectric inducing an asymmetric stress field is proposed.

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Section: Laser Propagationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Asymmetric Orientational Writing in glass with femtosecond laser irradiation

Poumellec¹,

Lancry²,

Desmarchelier³

et al. 2013

Opt. Mater. Express

View full text Add to dashboard Cite

show abstract

Revealing complex optical phenomena through vectorial metrics

Chang

Salter

et al. 2022

Adv. Photon.

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Advances in vectorial polarization-resolved imaging are bringing new capabilities to applications ranging from fundamental physics through to clinical diagnosis. Imaging polarimetry requires determination of the Mueller matrix (MM) at every point, providing a complete description of an object's vectorial properties. Despite forming a comprehensive representation, the MM does not usually provide easily interpretable information about the object's internal structure. Certain simpler vectorial metrics are derived from subsets of the MM elements. These metrics permit extraction of signatures that provide direct indicators of hidden optical properties of complex systems, while featuring an intriguing asymmetry about what information can or cannot be inferred via these metrics. We harness such characteristics to reveal the spin Hall effect of light, infer microscopic structure within laser-written photonic waveguides, and conduct rapid pathological diagnosis through analysis of healthy and cancerous tissue. This provides new insight for the broader usage of such asymmetric inferred vectorial information.

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Adaptive control of pulse front tilt, the quill effect, and directional ultrafast laser writing

Cited by 2 publications

References 0 publications

Asymmetric Orientational Writing in glass with femtosecond laser irradiation

Asymmetric Orientational Writing in glass with femtosecond laser irradiation

Revealing complex optical phenomena through vectorial metrics

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