Reflective holographic polymer dispersed liquid crystals(HPDLC) have been fabricated by irradiating Ar-ion laser(lambda =514 nm) of various intensities on LC/monomer mixtures sandwiched between two ITO coated glass plates. Gratings were written for various monomer compositions and laser intensities. UV-visible spectra have been analyzed. Eventually, reflective efficiency-irradiation intensity-monomer composition relationships have been obtained.