In this paper we report a systematic study on the properties of irradiated SWCNT films by high power, pulsed visible irradiation of OPO laser in the range from 430 nm to 800 nm. Raman analysis showed that metallic and semiconducting SWCNTs were simultaneously affected by irradiation. It was found that laser irradiation had the most prominent effects on SWCNT films at 430 nm wavelength. To our surprise, semiconducting SWCNTs were more affected by irradiation than metallic and as a result several SWCNTs were isolated partially
