Natural dyes extracted from plants and their application to all-photonic devices

Abstract

Nowadays the photonics will be the stage of all-optical photonic applications. Photonic devices with develop to light controlling with light. Natural dyes are attractive photonic media and subject to investigate in the applications due to the linear and nonlinear optical response. An optical pump-probe technique was presented to demonstrate the possibility of realizing the all-photonic switching. Two overlapping laser beams are used for this purpose, due to which a low-power beam passing collinear to a high-power laser beam will undergo cross phase modulation and thereby distort the spatial profile. Natural organic dyes extracted from plants in different method, such as, beet root, blackberry and cherry possessing large optical nonlinearity were prepared in ethylene glycol was used as solvent. Optical properties was performed to characterize the prepared the samples. Based on the optical nonlinear response, an interesting of figures of merit was calculated to assess the natural dyes for presented device. The results showed that the blackberry and beet root natural dyes, respectively, for design of all-photonic switches indicates that 84 and 80 % modulation at switching response time of 37 and 13 ms can be achieved with a control pump laser beam of 10 mW. These dyes are a precursor for developing ultra-photonic switches and in the development for application in solar cell devices.