2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/93232By using the theory of deformed quantum mechanics, we study the deformed light beam theoretically. The deformed beam quality factor $M_q^2$ is given explicitly under the case of deformed light in coherent state. When the deformation parameter $q$ being a root of unity, the beam quality factor $M_q^2 \leq 1$.11pages, revtex, no figuresQuantum Physicstext