A detailed experimental study of the random lasers with coherent feedback was carried out. It was found that the lasing threshold pump intensity is proportional to the square root of the transport mean free path. The number of lasing mode also increased with a decrease of the transport mean free path. The strong dependence of the lasing threshold and the number of lasing modes on the transport mean free path confirmed that the feedback for lasing is provided by optical scattering. Furthermore, a model was developed based on quasistates.
|Journal||Physical Review A. Atomic, Molecular, and Optical Physics|
|Publication status||Published - Dec 1 2001|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics