Laser systems based on coherent beam combination(CBC) that rely on tiled pupil architecture intrinsically carry digital capabilities independently applicable to all three essential characteristics of a laser pulse: am...Laser systems based on coherent beam combination(CBC) that rely on tiled pupil architecture intrinsically carry digital capabilities independently applicable to all three essential characteristics of a laser pulse: amplitude, phase and polarization. Those capabilities allow the far-field energy distribution to be flexibly tailored in real time. Operation in the femtosecond regime at high repetition rates gives access to a wide range of applications requiring both high peak and average powers. We address the task of independent peak versus average power adjustment needed for applications seeking to decouple nonlinear phenomena associated with GW peak power from the thermal load inherent to kW average power operation. The technical solutions proposed are presented in the framework of the Ecole Polytechnique XCAN CBC laser platform(61 independent channels) with an emphasis on thermal management measures implemented to ensure its nominal operation.展开更多
基金funding from the European Innovation Council(Open grant No.101047223-NanoXCAN and Horizon 2020 Framework Programme 654148)the Agence de l’Innovation de Défense(AID)+1 种基金the Centre National des Etudes Spatiales(CNES)supported in part by the U.S.Department of Defense,Defense Threat Reduction Agency(HDTRA120-2-0002)
文摘Laser systems based on coherent beam combination(CBC) that rely on tiled pupil architecture intrinsically carry digital capabilities independently applicable to all three essential characteristics of a laser pulse: amplitude, phase and polarization. Those capabilities allow the far-field energy distribution to be flexibly tailored in real time. Operation in the femtosecond regime at high repetition rates gives access to a wide range of applications requiring both high peak and average powers. We address the task of independent peak versus average power adjustment needed for applications seeking to decouple nonlinear phenomena associated with GW peak power from the thermal load inherent to kW average power operation. The technical solutions proposed are presented in the framework of the Ecole Polytechnique XCAN CBC laser platform(61 independent channels) with an emphasis on thermal management measures implemented to ensure its nominal operation.
