Dual Feedback Control in Solid State Lasers: Discrete Maps and Experiments

International Workshop on Nonlinear Maps and Applications 2015

Gorbunkov, M.V.^1 ; Maslova, Yu.Ya.^1 ; Shabalin, Yu.V.^1 ; Tunkin, V.G.^2

P.N. Lebedev Physics Institute, Leninskii Prospect 53, Moscow

119991, Russia^1

International Laser Center, Faculty of Physics, Moscow State University, Vorobevy Gory, Moscow

119992, Russia^2

关键词: Diode pumped Nd: YAG;    Discrete maps;    Dual feedback control;    Feedback delay;    Laser-pulse shortening;    Positive feedback loop;    Round-trip time;    Stable operation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/692/1/012009/pdf
DOI  :  10.1088/1742-6596/692/1/012009

来源: IOP

【 摘 要 】

Combinations of negative and positive feedback loops were investigated on the basis of discrete map analysis, numerical simulation and experimentally with lamp and diode pumped Nd:YAG lasers. Cases with relative feedback delay in two loops equal to one laser cavity round trip time were considered. Dual feedback control allows to achieve: 1) stable operation of both continuous and pulsed lasers in a wide range of active media gain, 2) laser pulse shortening down to several tens of picoseconds and 3) regular burst mode with periods up to hundred laser cavity round trip times.