Affiliation:
1. Southern University of Science and Technology
2. Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences
3. Shenzhen JPT Opto-Electronics Co., Ltd.
4. Pengcheng Laboratory
Abstract
We have proposed and demonstrated the generation of a high-energy, ultrashort pulse duration, GHz pulse burst polarization-maintaining fiber amplification system that utilizes both chirped-pulse amplification and self-similar amplification techniques. Such hybrid fiber amplification system produces 22 μJ-energy bursts of 200 pulses with a 1.02-GHz intra-burst pulse repetition rate and a 1-MHz inter-burst repetition rate. The center wavelength of the amplified compressed pulse is 1065 nm, with a 3 dB spectral bandwidth of 65 nm. The pulse duration of optimal compression is ∼35 fs, which represents the shortest pulse duration reported to date for any multi-microjoule class amplification system with a repetition rate at the GHz level. At the same time, only common double-cladding Yb3+-doped fiber is used as the gain fiber, without any large-mode-area Yb3+-doped photonic crystal fiber, makes the system compact and reliable by the simple fusion operation.
Funder
National Natural Science Foundation of China
GuangDong Basic and Applied Basic Research Foundation
Natural Science Foundation of Guangdong Province
Shenzhen Science and Technology Program
Stable Support Program for Higher Education Institutions from Shenzhen Science, Technology & Innovation Commission
General Program of Shenzhen Science, Technology & Innovation Commission
The Open Projects Foundation of State Key Laboratory of Optical Fiber and Cable Manufacture Technology
Shenzhen Research Foundation
Subject
Atomic and Molecular Physics, and Optics