Zhu P, Zigler A, Xie X, Zhang D, Yang Q, Sun M, Papeer J, Kang J, Gao Q, Liang X, Zhu H, Guo A, Liang Y, Ji S, Ren L, Liu H, Kang N, Zhao Y, Zhu J. Temporal contrast enhancement of ultrashort pulses using a spatiotemporal plasma-lens filter.
OPTICS LETTERS 2020;
45:2279-2282. [PMID:
32287213 DOI:
10.1364/ol.388391]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 03/06/2020] [Indexed: 06/11/2023]
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.
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