Efficient repetitive passive Q switching of a cladding-pumped Er-Yb fiber laser has been demonstrated by use of an external-cavity configuration containing a Co(2+): ZnS crystal as a saturable absorber. Energies of as much as 60muJ in pulses of durations as short as 3.5 ns (FWHM), corresponding to a peak power of >10kW, have been generated, and the maximum slope efficiency with respect to the a...

A unidirectional, passively Q-switched, 2.05-μm Ho:YLF ring laser providing single-frequency, sub-mJ-energy, 100-200-ns-long laser pulses at a kHz rate is reported. The wavelength selection and "coarse" spectral narrowing is performed by utilizing a volume Bragg grating as a resonant, narrowband output coupler operated at a small angle away from normal incidence. Pulsed operation of the Ho:YLF ...

In this paper preliminary results obtained in numerical simulation of various aspects regarding passively Q-switched high power Er fiber lasers are presented. The developed numerical analysis has the aim of a better understanding of high power fiber laser pointing to their possible applications in sensing and telecommunications. The numerical simulations are performed for passive Q-switches cel...

Abstract In this research, a diode‐pumped SnS 2 passively Q‐switched (PQS) V‐type Tm‐doped pulsed laser was demonstrated. The continuous‐wave (CW) condition without saturable absorber (SA) investigated first. A maximum output power of 1.26W with slope efficiency 24.28% derived at an absorbed pump 7.11W under coupling 5%. With the as‐prepared SA employed, series stable (QS) pulse trains were suc...