Pulse contrast enhancement by an aperiodic converter and self-focusing in hybrid Yb-fiber / Nd:glass CPA system

Z. Refaeli; M. Wyszkin; Irit Juwiler; G. Marcus; H. Suchowski; Y. Shamir

doi:10.1117/12.2668677

17 March 2023 Pulse contrast enhancement by an aperiodic converter and self-focusing in hybrid Yb-fiber / Nd:glass CPA system

Z. Refaeli, M. Wyszkin, Irit Juwiler, G. Marcus, H. Suchowski, Y. Shamir

Author Affiliations +

Proceedings Volume 12411, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXIII; 1241108 (2023) https://doi.org/10.1117/12.2668677
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

We introduce a hybrid CPA system of Yb-doped fibers and Nd:glass rods, with use of aperiodic-frequency-converter crystal around 526 nm, demonstrated ~40% efficiency, and ~40 dB pulse contrast improvement. New result with novel SLT-made-AFC yielded ~60% efficiency, both showed near full bandwidth conversion. A Neodymium:glass CPA pulse yielded record energy result of 320s μJ in 527 nm second harmonic with the LiNBO₃. Additionally, new, very low-cost, robust method, based on time-space nonlinear-index self-focusing effect showed >20-dB contrast enhancement.

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Z. Refaeli, M. Wyszkin, Irit Juwiler, G. Marcus, H. Suchowski, and Y. Shamir "Pulse contrast enhancement by an aperiodic converter and self-focusing in hybrid Yb-fiber / Nd:glass CPA system", Proc. SPIE 12411, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXIII, 1241108 (17 March 2023); https://doi.org/10.1117/12.2668677

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