Laser Energy Effects on Optical Properties of Titanium Di- Oxide Prepared by Reactive Pulsed Laser Deposition

Abstract

In this Work, Laser energy effects on optical and morphological properties ofTiO2 thin film has been carried out using Reactive Pulsed Laser as a Depositiontechnique (RPLD). Q-switched Nd-YAG laser with (ë=1.06ìm, t =7nsec) anddifferent energies have been used to ablate pure Titanium target and deposited thinfilms on glass substrates with constant substrate temperature of (343K). The opticalproperties of the films prepared include Optical transmit ion and absorptionmeasurement, surface uniformity measurement and FTIR structure of these films.The results films show that high transparency reached to about (85-98) % can beachieved with TiO2 film which itself decreases sharply with the increasing of Laserenergy while the optical band gap is (3.7-3.9) eV at optimum Laser energy in allresults (800mJ), the FTIRstructure result at 800 mJ is the optimum and peaksabsorption of TiO2 are (408.91, 439.77, 524.64) cm-1.