Q-switched ytterbium all-fiber ring laser using a novel optical fiber wavelength-selective switch

摘要

A novel Q-switched ytterbium all-fiber ring laser using a fiber grating Sagnac loop is reported. We analyze the transmission spectra of fiber grating Sagnac loop, which can act as both Q-switch and wavelength-selective filter. Stable optical pulse output with pulse width of 0.3 μs, peak power of 8.2 W and repetition rate of 2.5 KHz at 1053.16 nm is obtained in experiments. The operation of this Q-switched all-fiber laser is very stable.