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Temperature tunable random laser using superconducting materials |
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| Authors: | Abbas Ghasempour Ardakani Mehdi Hosseini Ali Reza Bahrampour Seyed Mohammad Mahdavi |
| Affiliation: | 1. Department of Physics, Sharif University of Technology, Tehran, Iran;2. Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, Iran;1. Information Physics Research Center and Department of Applied Physics, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China;2. Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China;1. School of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, People''s Republic of China;2. School of Physics, Chongqing University, Chongqing 401331, People''s Republic of China |
| Abstract: | We propose that spectral intensity of superconductor based random lasers can be made tunable by changing temperature. The two fluid model and wavelength dependent dispersion formula have been employed to describe the optical response of the superconducting materials. Random laser characteristics have been calculated using the one dimensional FDTD method. Our simulation results reveal that the emission spectrum can be manipulated through the ambient temperature of the system. It is observed that transition from metal phase to pure superconducting phase leads to the enhancement of the laser emission. Furthermore, spatial distribution of the fields in one dimensional disordered media is very sensitive to the system temperature. |
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