There is disclosed a storage apparatus which is of a system of utilizing a polarized state change by Kerr effect to read information from a storage medium and which easily and precisely performs adjustment to compensate for a phase deviation between both P, S polarized components attributed to an optical...http://www.google.com/patents/US6700854?utm_source=gb-gplus-sharePatent US6700854 - Optical storage apparatus and phase compensation amount adjustment method
