Gain-managed nonlinear amplification in an Erbium-doped fiber

Optics Express, Journal Year: 2024, Volume and Issue: 32(27), P. 48815 - 48815

Published: Dec. 17, 2024

To our knowledge, we report the first experimental demonstration of gain-managed nonlinear (GMN) amplification femtosecond pulses in an erbium-doped fiber amplifier (EDFA). We investigated GMN using two different seed sources, operating at wavelengths 1530 and 1560 nm. obtained broadband output spectra spanning entire C- L-bands (1530-1620 nm). Our study shows that, contrast to Yb-doped amplifiers, it is not critical choose a wavelength located short-wave edge gain bandwidth amplifier. Efficient can also be achieved with nm wavelength.

Language: Английский

Figure-8 mode-locked Yb-doped fibre oscillator with a nonlinear amplifying loop mirror and power amplification

Laser Physics, Journal Year: 2024, Volume and Issue: 34(12), P. 125101 - 125101

Published: Oct. 11, 2024

Abstract We report an all-polarization-maintaining Yb-doped fibre (YDF) femtosecond (fs) laser source at ∼1 µ m comprising a figure-8 mode-locked oscillator and two YDF amplifier stages. By employing nonlinear amplifying loop mirror, we could achieve dissipative soliton mode-locking with output of 24.6 mW repetition rate 6.2 MHz. In our experiments, Raman signal 16% in the pulse energy helps to obtain stable operation oscillator. The from is stretched by chirped Bragg grating amplified two-stage amplifier. After compression, master-oscillator power-amplifier system yields fs pulses 2.3 J duration 274.6 0.52 limited third-order nonlinearity chain. Prospects for further scaling are discussed.

Language: Английский