Phase Anomalies in Micro-Optics

Kim, Myun-Sik; Scharf, Toralf; Rockstuhl, Carsten; Herzig, Hans Peter

doi:10.1016/b978-0-444-62644-8.00003-0

Cited by 8 publications

(3 citation statements)

References 135 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be emphasized 40 , that the analytical formulas obtained in Appendix A and Appendix B give correct results in the systems, for which the approximations are applicable. Thanks to them, it was possible to apply Taylor's expansion in each of the cases described by Eqs.…”

Section: Appendix C: Analysis Of Computational Uncertaintiesmentioning

confidence: 91%

Spin-wave Talbot effect in thin ferromagnetic film

Golebiewski,

Gruszecki,

Krawczyk

et al. 2020

Preprint

View full text Add to dashboard Cite

The Talbot effect has been known in optics since XIX century and found various technological applications. In this paper, we demonstrate with the help of micromagnetic simulations this selfimaging phenomenon for spin waves propagating in a thin ferromagnetic film magnetized out-ofplane. We show that the main features of the obtained Talbot carpets for spin waves can be described, to a large extent, by the approximate analytical formulas yielded by the general analysis of the wave phenomena. Our results indicate a route to a feasible experimental realisation of the Talbot effect at low and high frequencies and offer interesting effects and possible applications in magnonics.

show abstract

Section: Appendix C: Analysis Of Computational Uncertaintiesmentioning

confidence: 91%

Spin-wave Talbot effect in thin ferromagnetic film

Golebiewski,

Gruszecki,

Krawczyk

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…The Gouy phase is an additional phase that the focused field acquires, compared to an ideal non-diffracted field [15][16][17] , and it plays a fundamental role in many applications, like in terahertz spectroscopy [18] and optical calibration [19,20] . Because of the polarization effect in strongly focused fields, there will be a Gouy phase difference between the field components with different polarizations [20] .…”

Section: Introductionmentioning

confidence: 99%

Evolution of spin density vectors in a strongly focused composite field

2021

View full text Add to dashboard Cite

The evolution of the spin density vectors (SDVs) is studied in a strongly focused composite field. It is found that the SDVs can be spiral along the propagation axis, and they are perpendicular to the y s direction on the y s axis. This behavior is governed by the Gouy phase difference between the field polarization components. The 60°rotation of the spatial distribution of the transverse SDVs is also generated, which is found to be controlled by the Gouy phase difference between the field orbital angular momentum modes. Additionally, the spin density singularities are observed in the evolution of the SDVs.

show abstract

“…Since its discovery, the Gouy phase anomaly has been observed both theoretically and experimentally in many different beam types including, but not limited to, Gaussian beams, Bessel beams, and photonic nanojets. An extensive review may be found in [6].…”

Section: Introductionmentioning

confidence: 99%

Using the Gouy phase anomaly to localize and track bacteria in digital holographic microscopy 4D images

Gibson¹,

Bedrossian²,

Serabyn³

et al. 2020

J. Opt. Soc. Am. A

View full text Add to dashboard Cite

Described over 100 years ago, the Gouy phase anomaly refers to the additional π phase shift that is accumulated as a wave passes through focus. It is potentially useful in analyzing any type of phase-sensitive imaging; in light microscopy, digital holographic microscopy (DHM) provides phase information in the encoded hologram. One limitation of DHM is the weak contrast generated by many biological cells, especially unpigmented bacteria. We demonstrate here that the Gouy phase anomaly may be detected directly in the phase image using the z-derivative of the phase, allowing for precise localization of unlabeled, micrometer-sized bacteria. The use of dyes that increase phase contrast does not improve detectability. This approach is less computationally intensive than other procedures such as deconvolution and is relatively insensitive to reconstruction parameters. The software is implemented in an open-source FIJI plug-in.

show abstract

Phase Anomalies in Micro-Optics

Cited by 8 publications

References 135 publications

Spin-wave Talbot effect in thin ferromagnetic film

Spin-wave Talbot effect in thin ferromagnetic film

Evolution of spin density vectors in a strongly focused composite field

Using the Gouy phase anomaly to localize and track bacteria in digital holographic microscopy 4D images

Contact Info

Product

Resources

About