| Biography | |
|---|---|
 Dr. Qiao Wen Shenzhen University, China |
|
| Title: Ultra-narrow linewidth fiber laser based on quantum dots | |
| Abstract: Narrow linewidth fiber laser has been widely used in fiber sensing, coherent optical communication, laser high-precision measurement, gravitational wave detection and other fields, and has huge new application prospects. The narrow linewidth laser based on quantum dots as a saturable absorber has the advantages of low cost, simple fabrication and narrow output linewidth. In this paper, we focus on the saturable absorption properties of quantum dots, and apply them to near-infrared fiber lasers to achieve a stable output of narrow linewidth spectrum. A narrow linewidth fiber laser based on quantum dots was built. Its laser linewidth is 624.5 Hz, the highest signal-to-noise ratio (SNR) is 77.63 dB and the lowest power fluctuation is 0.4%. The experimental works prove that quantum dots are an excellent saturable absorber and have a promising application in ultranarrow photonics. | |
| Biography: Qiao Wen received a B.Eng. degree in optoelectronics science and technology and an M.S. degree in optics, both from Sichuan University, Chengdu, China, and a Ph.D. degree in optical engineering from Tsinghua University, Beijing, China. Since then, he has devoted his career to laser R&D, particularly ultrafast lasers. He is currently an Associate Professor with Shenzhen University, Shenzhen, China. He has authored or coauthored more than 20 patent applications and more than 50 journal and conference papers. His current research interests include solid-state lasers, fiber lasers, and their applications. | |
