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Roberto Casini

Explicit Form of the Radiative and Collisional Branching Ratios in Polarized Radiation Transport with Coherent Scattering

Schematic diagram showing the polarized radiation transfer in a Lambda-type atomic transition
Tuesday, October 17, 2017

We consider the vector emissivity of the polarized radiation transfer in a Lambda-type atomic transition, which we recently proposed in order to account for both CRD and PRD contributions to the scattered radiation.

Boulder scientists’ work key to astonishing images of sun’s surface

ViSP spectrograph system from from the DKIST

The highest resolution images of the solar surface ever seen were made possible to no small degree by the work of Boulder based scientists.

Removal of Spectro-Polarimetric Fringes by 2D PCA

Graph depicting the transformation of the PCA basis through a series of carefully chosen rotations
Monday, February 25, 2019

We investigate the application of 2-dimensional Principal Component Analysis (2D PCA) to the problem of removal of polarization fringes from spectro-polarimetric data sets.

Measured performance of shadow-cast coated gratings for spectro-polarimetric applications

Measured vector efficiency of an echelle grating
Wednesday, August 1, 2018

Roberto Casini et al report on the measurements of the vector efficiency of a reflective blazed diffraction grating, which was specially coated in order to reduce the level of polarization in the diffracted light.

P Judge and R Casini Advise Early Career Researchers

Roberto Casini and Philip Judge image

Physics World presents an article co-authored by HAO senior scientists, Philip Judge and Roberto Casini, on the challenges for the "budding research scientist" when selecting a meaningful research field and future career.

Roberto Casini

Submitted by whawkins on April 13, 2016 - 4:10pm

Dr. Roberto Casini is a Senior Scientist in the High Altitude Observatory at the National Center for Atmospheric Research. He specializes in spectro-polarimetric diagnostics of the solar atmosphere.

HAO Colloquium Series presents Roberto Casini, HAO

Tools for solar magnetism diagnostics: The bridge from theory to instrumentation.

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The National Center for Atmospheric Research is sponsored by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.