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Abstract:
In this study, we demonstrated a few-cycle pulse generation system delivering an 8-fs and 13-nJ pulse. The oscillator of this system is a mode-locked fiber laser based on a nonlinear amplifying loop mirror (NALM), which is injected into the gain management nonlinear (GMN) amplifier after pre-chirp management by a chirped fiber Bragg grating (CFBG) and a passive fiber. Subsequently, a hollow-core photonic bandgap (HC-PBG) fiber is employed to compensate for the dispersion, achieving a pulse duration of 49.8 fs with a pulse energy of 51.8 nJ. Finally, we integrate an ultra-high numerical aperture (UHNA) fiber at the end of the HC-PBG fiber for nonlinear spectral broadening. The resulting spectral range spans from 800 to 1400 nm. Dispersion compensation is achieved using the prism-pair, resulting in a further compression of the pulse duration to 8.2 fs, with a pulse energy of 13.1 nJ and a peak power of 1.59 MW. With an overall system footprint of < 0.1 m(2) and a total volume of < 0.005 m3 , this few-cycle pulse generation system delivers ultra-short pulses with high peak power while maintaining compactness and stability, making it attractive for many applications. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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Source :
OPTICS EXPRESS
ISSN: 1094-4087
Year: 2024
Issue: 18
Volume: 32
Page: 32396-32407
3 . 8 0 0
JCR@2022
Cited Count:
WoS CC Cited Count: 2
SCOPUS Cited Count: 2
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 9
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