Theoretical investigation of tuning the photonic jet through varying the salt concentration in propagating medium using FDTD method

In this present study the behavior of photonic jet produced from an axicon immersed in aqueous solution of NaCl was investigated, where the aqueous solution NaCl act as a propagating medium. From simulation study it was found that the behavior of photonic jet varies with the different concentration of aqueous solution. In this study the rate of change in the propagation length of photonic jet was found to be 0.0903 μm per gm/lit up to a concentration level of 100 gm/lit. However from FDTD analysis minimal variation in intensity level and FWHM of photonic jet were revealed.