报告内容 摘 要 |
High-power low-noise single-mode single-frequency lasers are in great demand for interferometric metrology, LIDAR, and atom/molecular optical physics. Robust, compact all-fiber lasers represent one of the most promising technologies to replace the current laser sources in use based on injection-locked ring resonators or multi-stage solid-state amplifiers. Here, a linearly-polarized high-power ultra-low noise all-fiber laser is demonstrated at a power level of 100 W. Special care has been taken in the study of relative intensity noise (RIN) and its reduction. Using an optimized servo actuator to directly control the driving current of the pump laser diode (LD), we obtain a large feedback bandwidth of up to 1.3 MHz. The close to shot-noise limit performance is achieved with a RIN of -160 dBc/Hz between 3 kHz and 20 kHz. |
报 告 人 简 介 |
Dr. Zhao Jian graduated from Wuhan University of technology in 2008. He obtained his master degree from Laser engineering laboratory of ShenZhen University in 2011. Later he got his phD diploma from the state key laboratory of precision spectroscopy in 2015. Since December 2015, he received the FFCSA (La Fondation Franco-Chinoise pour la Science et ses Applications) fund to study in IOGS-CNRS-Bordeaux University France under the supervion of Prof. Giorgio Santarelli. His research interest includes fiber optical gyroscope, the generation of high-power continuous /ultrashort pulse laser, fiber frequency comb, and the front-end optical source for gravitational-wave detection. |
