Near infrared tunable source delivering ultra-short pulses based on an all normal dispersion fiber and a zero dispersion line

Abstract

A tunable laser source (820-1200 nm) delivering ultra-short pulses in the range of 40-100 fs is investigated. It is based on the filtering of a continuum in the Fourier plane of a zero dispersion line without any phase compensator. The numerical simulations show the origin and the impact of the nonlinear chirp to guarantee ultra-short pulses.

Signal to Noise Ratio Analysis of a Chirped Pulsed Four-Wave Mixing by the Dispersive Fourier Transform Method

“…1.a, black curve) [3]. Another part of the oscillator is used to generate a continuum in an all normal dispersion fiber [4] and a second chirped VBG selects a spectrum part (Fig. 1.a, blue curve) centered at 1077 nm with a bandwidth of 13 nm at full width at half maximum.…”

Temporal Distribution Measurement of the Parametric Spectral Gain in a Photonic Crystal Fiber Pumped by a Chirped Pulse

“…The total average power was 1.5 W. The pump wavelength was set at 1030 nm, while the signal one needed to be tunable in order to seed the targeted parametric amplification band. In order to shift the signal spectrum, a beam splitter selected a part of the oscillator output and 400 mW was injected into an all normal dispersion fiber (ANDI) to generate a coherent continuum [19]. It extended from~750 nm to 1250 nm and, therefore, it could be used to seed a parametric amplifier in this band.…”