A spectro-polarimetric method is presented to allow the recovery of the frequency dependent polarization modulation function for an achromatic half-wave plate. We show how the non ideal nature of the modulator can be characterized for removal of both instrument effects and variations related to the source spectral index.
© 2009 Optical Society of America
Instrumentation, Measurement, and Metrology
Original Manuscript: October 7, 2008
Revised Manuscript: February 27, 2009
Manuscript Accepted: March 6, 2009
Published: April 1, 2009
Giorgio Savini, Peter A. R. Ade, Julian House, Giampaolo Pisano, Vic Haynes, and Pierre Bastien, "Recovering the frequency dependent modulation function of the achromatic half-wave plate for POL-2: the SCUBA-2 polarimeter," Appl. Opt. 48, 2006-2013 (2009)