Tunneling-induced high gain and narrow linewidth of a cavity with an asymmetric quantum-well system |
| |
| Authors: | Aihong Yang Dehua Li Luyin Zhang Xueshui Wang |
| |
| Affiliation: | 1. Department of Basic Courses , Shandong University of Science and Technology , Taian , Shandong 271500 , China;2. College of Science , Shandong University of Science and Technology , Qingdao , Shandong 266590 , China |
| |
| Abstract: | A scheme is proposed for obtaining high gain and narrow linewidth of a cavity with an asymmetric quantum-well system. Due to resonant tunneling, destructive interference for linear absorption leads to a tunneling-induced transparency window which compresses the cavity linewidth; moreover, constructive interference for cross-nonlinear susceptibility occurs, which introduces high gain and large dispersion, and the cavity linewidth is much compressed. In the latter case, the intensity of cavity transmission could be enhanced one order of magnitude larger than that of input field, and its linewidth could be one-seventieth of the empty cavity. |
| |
| Keywords: | tunneling-induced transparency cavity linewidth cross-Kerr nonlinearity gain dispersion quantum-well system |
|
|
