Temporal contrast enhancement of ultrashort pulses using a spatiotemporal plasma-lens filter
Ping Zhu, A. Zigler, Xinglong Xie, Dongjun Zhang, Qingwei Yang, Meizhi Sun, J. Papeer, Jun Kang, Qi Gao, Xiao Liang, Haidong Zhu, Ainlin Guo, Yan Liang, Shengzhe Ji, Lei Ren, Huiya Liu, Ning Kang, Yao Zhao, Jianqiang Zhu
Abstract
The spatiotemporal plasma-lens filter proposed here enhances the temporal contrast of the ultrashort pulse laser by combining plasma optics and spatial filtering. Experimentally, the spatiotemporal plasma-lens filter has improved the temporal contrast by 2 orders of magnitude with 80% laser transmission efficiency under a 1 Hz repetitive laser operation. Not only were the pre-pulse and the pedestal cleaned out, but also the rising edge of the main pulse was sharpened.
Topics & Concepts
OpticsLens (geology)LaserFilter (signal processing)Spatial filterMaterials scienceUltrashort pulsePulse (music)PedestalPulse shapingFemtosecond pulse shapingPlasmaContrast (vision)PhysicsComputer scienceArchaeologyQuantum mechanicsHistoryComputer visionDetectorLaser-Plasma Interactions and DiagnosticsLaser-Matter Interactions and ApplicationsLaser Material Processing Techniques