Solid-state Mamyshev oscillator
Mingming Nie, Jiarong Wang, Shu-Wei Huang

TL;DR
This paper introduces the first solid-state Mamyshev oscillator utilizing cascaded quadratic nonlinear processes in lithium niobate, achieving broadband mode-locking with high pulse energy and ultrashort pulse duration.
Contribution
It presents the novel design and analysis of a solid-state Mamyshev oscillator that enables broadband mode-locking through spectral broadening in a lithium niobate waveguide.
Findings
Pulse energy of 25.3 nJ per pulse
Repetition rate of 100 MHz
Pulse duration of 322 fs
Abstract
We present the first design and analysis of a solid-state Mamyshev oscillator. We utilize the phase-mismatched cascaded quadratic nonlinear process in periodically poled lithium niobite waveguide to generate substantial spectral broadening for Mamyshev modelocking. The extensive spectral broadening bridges the two narrowband gain media in the two arms of the same cavity, leading to a broadband mode-locking not attainable with either gain medium alone. Two pulses are coupled out of the cavity and each of the output pulses carries a pulse energy of 25.3 nJ at a repetition rate of 100 MHz. The 10-dB bandwidth of 2.1 THz supports a transform limited pulse duration of 322 fs, more than 5 times shorter than what can be achieved with either gain medium alone. Finally, effects of group velocity mismatch, group velocity dispersion, and nonlinear saturation on the performance of Mamyshev…
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Taxonomy
TopicsAdvanced Fiber Laser Technologies · Photorefractive and Nonlinear Optics · Laser-Matter Interactions and Applications
