Temporal overlapping effect in pump-probe technique on the Rhodamine 6G with addition copper nanoparticle

Abstract

Abstract This study took place utilizing the laser "Pump-Probe" probe technique to investigate the properties of a rhodamine 6G laser dye. 532 nm wavelength laser was employed for excitation of the dye "pumping", while another laser with a wavelength of 657 nm was utilized for sensitization "probe". A copper nanomaterial with an average size of 43 nm has been added to the system. The green laser pulse width was modulated at various percentages, including 5%, 10%, 20%, 30%, 40%, and 50% of the original pulse width. The pulse utilized for the pumping process was divided into two components, one of the tow pulse was directed towards the dye, while optical path of the other component was altered by employing multiple mirrors, the modification in the optical path was implemented in order to establish an accurate delay time between the two pulses and control their overlap by extending the duration of the laser pulse. The transmittance laser intensity was determined both before and after the addition of the nanomaterial. Additionally, (FWHM) of the output laser pulse was computed. The wavelength of the output laser pulse was also determined through calculation. The study findings demonstrated a discernible impact resulting from the alteration of laser pulse width as well as the influence of the nanomaterial on the intensity and optical characteristics of the dye. This study is a component of a series of research endeavors focused on comprehending the interplay between nanomaterials and laser dyes as well as the resultant impact of these interactions on the characteristics of laser dyes.