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Gaussian Beam Diffraction by the Inverse Prism

2018· article· en· W2909261422 on OpenAlexaff
Alireza Akbarzadeh, Christophe Caloz

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldPhysics and Astronomy
TopicOrbital Angular Momentum in Optics
Canadian institutionsPolytechnique Montréal
Fundersnot available
KeywordsDiffractionOpticsDiscontinuity (linguistics)Angular spectrum methodPhysicsFresnel diffractionGaussianPrismBeam (structure)IsotropyGaussian beamInverseDispersion (optics)Envelope (radar)MathematicsMathematical analysisGeometryComputer scienceQuantum mechanicsTelecommunications

Abstract

fetched live from OpenAlex

We study the diffraction of a Gaussian beam from the recently introduced inverse prism, which is a medium that is instantaneously switched between an isotropic state and a uniaxial state. The study is done by expanding all the fields in terms of their angular spectra, using previously derived temporal Fresnel coefficients for the s- and p-polarizations. It is found that the envelope of the beam strongly varies over time, as a result of the different velocities of the angular spectrum components induced by the production of new frequencies at the time discontinuity. This spatiotemporal diffraction effect, requiring both temporal discontinuity and spatial dispersion, is very unusual, and is reported here for the first time to authors' knowledge.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: Not applicable
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.373
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.001

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.007
GPT teacher head0.226
Teacher spread0.219 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

Study designNot applicable
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations1
Published2018
Admission routes1
Has abstractyes

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