We present an approach to spectropolarimetry that requires neither moving parts nor time dependent modulation, and that offers the prospect of achieving high sensitivity. The technique applies equally well, in principle, in the optical, UV, or IR. The concept, which is one of those generically known as channeled polarimetry, is to encode the polarization information at each wavelength along the spatial dimension of a two-dimensional data array using static, robust optical components. A single 2D data frame contains the full polarization information and can be configured to measure either two or all of the Stokes polarization parameters. By acquiring full polarimetric information in a single observation, we simplify polarimetry of transient sources and in situations where the instrument and target are in relative motion. The robustness and simplicity of the approach, coupled with its potential for high sensitivity, and applicability over a wide wavelength range, is likely to prove useful for applications in challenging environments such as space.
© 2012 Optical Society of America
Instrumentation, Measurement, and Metrology
Original Manuscript: April 16, 2012
Revised Manuscript: June 15, 2012
Manuscript Accepted: June 19, 2012
Published: July 30, 2012
William Sparks, Thomas A. Germer, John W. MacKenty, and Frans Snik, "Compact and robust method for full Stokes spectropolarimetry," Appl. Opt. 51, 5495-5511 (2012)