Analysis of photo-excited thin superconducting films for optoelectronic device applications

This paper introduces a steady state photoresponse analysis in superconduct ing thin films. A model is developed for investigating the capability of su perconductors for potential optoelectronic applications. First, we consider the thermodynamical variation under the application of continuous optical radiation in superconducting state. Then, the photo-induced changes in elec trical parameters are evaluated from thermodynamical variations using the e lectrodynamics based on the BCS theory. All variations are considered as a function of optical characteristics along with the material properties. The numerical simulation gives us the optimum range of applied optical frequen cy and absorbed radiation intensity required for sensitive control of super conducting properties for optoelectronic and microwave applications.