RT Journal Article T1 On the Q(M) depolarization metric A1 Espinosa Luna, Rafael A1 Bernabeu Martínez, Eusebio AB In this work, we have derived a depolarization metric, named Q(M) here, from the nine bilinear constraints between the 16 Mueller-Jones matrix elements, reported previously by several authors following different approaches. This metric Q(M) is sensitive to the internal nature of the depolarization Mueller matrix and does not depend on the incident Stokes vector. Q(M) provides explicit information about the inner 3 x 3 internal matrix. Four bounds are associated to Q(All) for a totally depolarizing, partially depolarizing, non-depolarizing diattenuating or partially depolarizing, and non-depolarizing non-diattenuating optical system, respectively. To our best knowledge, Q(All) is the unique depolarization metric that provides such information in one single number. PB Elsevier Science BV SN 0030-4018 YR 2007 FD 2007-09-15 LK https://hdl.handle.net/20.500.14352/51178 UL https://hdl.handle.net/20.500.14352/51178 LA eng NO © 2007 Elsevier B.V.The authors acknowledge one of the anonymous referees for the excellent work done through the Revision process of this manuscript and also for his invaluable suggestions and corrections to the original version. One of the authors, REL, expresses his gratitude to CONACYT (Project 46969-F) and to Grupo Santander (Program Visitantes Distinguidos at the Universidad Complutense de Madrid) for the support provided for the realization of this work. NO Consejo Nacional de Ciencia y Tecnología (CONACYT), México NO Grupo Santander, España NO Universidad Complutense de Madrid (UCM) DS Docta Complutense RD 8 abr 2025