WebApr 3, 2015 · In the past decade, passively mode-locked fiber lasers have been extensively investigated due to its simplicity and compactness [1,2,3].The high repetition rates of passively mode-locked fiber lasers with subnanosecond to picosecond pulses have potential applications in many fields, including high speed optical communication, optical … WebQ-switching is achieved by putting some type of variable attenuator inside the laser's optical resonator. When the attenuator is functioning, light which leaves the gain medium does not return, and lasing cannot begin. This attenuation inside the cavity corresponds to a decrease in the Q factor or quality factor of the optical resonator.

Frontiers Passively Q-Switched and Mode-Locked Fiber Laser …

WebSep 14, 2024 · To understand the regime of Q-switched mode locking, we reconsider the rate equations ( 4.4.18) to ( 4.4.20 ). Figure 4.28 shows, that we can describe the laser … WebFurthermore, the number of mode-locked pulses in the envelope decreased significantly as the width of the envelope decreased. The temporal shapes of QML pulses under the pump … how to unstick a throttle cable

Photonics Free Full-Text Harmonic Mode-Locked Fiber Laser …

WebWe successfully demonstrated a pulse laser with a fundamental repetition rate of 1 GHz in passively Q-switched mode-locked oscillation by using Yb-Mg-doped silica glass fiber … WebSep 14, 2024 · A typical actively Q-switched pulse is asymmetric: The rise time is pro- portional to the net gain after the Q-value of the cavity is actively switched to a high value. The light intensity growths proportional to 2g0 / TR. When the gain is depleted, the fall time mostly depends on the cavity decay time τp. WebJul 31, 2016 · Abstract The parametric generation in a nonlinear PPLN crystal synchronously pumped by a Q-switched mode-locked Nd : YAG laser with a pulse duration of 45 ps is studied. The output pump intensity in the nonlinear crystal reaches ∼10 GW cm {sup -2}. oregon shut down