Random Laser Action in Weakly Nano-Scattering Solution

Abstract

We experimentally measured the random laser action which pumped by 355 nm ns laser pulse. We focus on the emission spectra varying with the pump energies and study the lasing threshold of the random laser. It is found that, there a low threshold pumped by 355 nm laser pulse compared with 480 nm laser pulse. Meanwhile, we measured the emission spectra for different detect angles at the same pump energy. It shows that, the emission peak intensities are symmetric about the zero detect angle at X direction (vertical light path), and there are spikes at Z direction (light path).

Keyword:

• Random laser

Acknowledgments

This research is supported by the National Natural Science Foundation of China (No. 60890200, 10976017).