Method for producing identical spectral copies of ultra-broadband arbitrary light fields.

An ultra-broadband beam splitter arrangement, with a spectral amplitude response that is over seven orders-of-magnitude more uniform than broadband, multi-layer dielectric beam splitters, can be created by the combination of multiple Fresnel events on an uncoated, optical flat when used at a specific angle-of-incidence. This beam splitter arrangement produces three, spectral copies of the original, two of which have identical spectral phase. In this manuscript we derive the precise angle at which this maximally flat spectral amplitude response occurs for any material and present this angle's material and polarization dependence.

The Impact of Brief Interventions With Condom Demonstrations on Youth: A Systematic Review.

Purpose: This review examined whether there is evidence that brief interventions with condom demonstration lessons have impacts on behavioral and nonbehavioral outcomes for youth and young adults.

Methods: We conducted a systematic review using a prespecified search strategy and processes consistent with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. We identified a pool of 11 eligible studies that tested the effectiveness of a single-session intervention that was no longer than 60 minutes and included a condom demonstration.

Ideal spatio-temporal pulse distribution for exawatt-scale lasers based on simultaneous chirped beam and chirped pulse amplification.

This paper presents the ideal spatio-temporal pulse structure that is required to produce exawatt-scale pulses based on simultaneous chirped beam and chirped pulse amplification in a Nd:Mixed-glass laser system. It is shown, that a 100 fs Fourier transform-limited pulse is created from a 20 ns duration stretched beam-pulse after propagating through an appropriate six-grating compressor arrangement. Quantitative results, from a ray-tracing model of the six-grating compressor, provide the detailed spatio-spectral and spatio-temporal pulse distributions of the stretched pulse along with the higher-order phase distortions compensated by this pulse compression scheme.

Triaged Out of Care: How Carceral Logics Complicate a 'Course of Care' in Solitary Confinement.

Incarceration, along with its most restrictive iteration, solitary confinement, is an increasingly common experience in America. More than two million Americans are currently incarcerated, and at least one-fifth of incarcerated people will experience solitary confinement. Understanding the barriers to care people experience in prison, and especially in solitary confinement, is key to improving their access to care during and after incarceration.