Master's Thesis from the year 2004 in the subject Physics - Applied physics, Cairo University (National Institute of Laser Enhanced Sciences (NILES)), course: Laser Systems Department, language: English, abstract: The aim of the present work is how to make thin films using pulsed laser deposition (PLD) technique. This will include high vacuum system, target - substrate design and a suitable laser source. Also one of our main targets was to reach the optimum conditions by which the CdS thin film becomes more applicable in optoelectronic devices. This can be carried out by measuring the optical properties of CdS thin films and studying the spectral distribution of photocurrent response at different incident photon energies as well as the electrical properties. The optical and electrical properties of Cadmium Sulfide (CdS) thin film have attracted the attention of many authors due to their large field of applications. There is also a demand for further development of thin films for minimization of dimensions and weight of electronic systems.