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The rising demand in ultrafast radiation sources has boosted the search for high power and high stability mode-locked fiber lasers, particularly at telecom wavelengths. In this work, we demonstrate the first ultrafast mode-locked fiber laser relying on InN as saturable absorber, centered at 1.5μm. The saturable absorber consists of a 1-μm-thick InN grown on a GaN-on-sapphire template deposited by...
In 1997, Yoshida et al. inserted a Fabry-Perot filter in a modulation instability fiber laser cavity [1], the free spectral range (FSR) of the Fabry-Perot fixed the RF to 115 GHz; however the pulsed laser was poorly stable. Since then, lasers of increasing performance have been demonstrated using variants of this method. In 2012, Peccianti et al. demonstrated the first fiber laser harmonically mode-locked...
Femtosecond mode-locked fiber lasers have been actively employed in many practical applications such as micro-machining, corneal surgery and multi-photon imaging, thanks to their compactness, alignment-free operation, and low cost. To enhance the long-term stability and self-starting operation of mode-locked lasers, saturable absorber (SA) devices, such as semiconductor saturable absorber mirrors...
Passively mode-locked femtosecond fiber lasers operating in the telecom band around 1.5 μm are well discovered since many years. Thulium- and Holmium-based hght sources in 2 μm region have greatly gained interest in recent years. Because of the absence of optical transitions in fibers doped with rare-earth ions, the gap between these two spectral regions, namely laser sources at wavelengths around...
Mode-locked fiber lasers emitting in the wavelength range beyond 2 μm [1] are promising for a number of applications including environmental sensing, material processing, medicine etc. Mode-locked holmium fiber lasers tend to operate below 2.1 μm wavelength. For some applications it is important to shift the laser wavelength further to the infrared. Previous demonstration of a 2107-nm mode-locked...
Dissipative soliton resonance (DSR) fiber mode-locked lasers (MLL) are attracting a steadily growing interest over the recent years, due to their ability to generate relatively long (ns-scale), strongly chirped and large energy pulses directly inside a main oscillator. Thulium-doped fiber (TDF) DSR MLLs, optionally enhanced with amplification and compression stages, are in high demand in various application...
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