Starting dynamics of a linear-cavity femtosecond Mamyshev oscillator
Yi-Hao Chen, Pavel Sidorenko, Robert Thorne, Frank Wise
Abstract
Mamyshev oscillators can generate high-power femtosecond pulses, but starting a mode-locked state has remained a major challenge due to the suppression of continuous-wave lasing. Here, we study the starting dynamics of a linear Mamyshev oscillator designed to generate high-power femtosecond pulses while avoiding component damage. Reliable starting to stable mode-locking is achieved with a combination of modulation of the pump power and shifting of a filter passband. The starting process is automated, with full electronic control. The laser delivers 21-nJ pulses that are dechirped to 65 fs in duration outside the cavity.
Topics & Concepts
FemtosecondLaserDynamics (music)Modulation (music)Power (physics)Component (thermodynamics)Filter (signal processing)PhysicsOpticsMaterials scienceSteady state (chemistry)Process (computing)OptoelectronicsExcitationNonlinear opticsFrequency modulationElectronic oscillatorUltrashort pulseAtomic physicsPhase modulationAmplifierUltrafast opticsState (computer science)Work (physics)Optical pumpingAdvanced Fiber Laser TechnologiesLaser-Matter Interactions and ApplicationsNonlinear Photonic Systems