Abstract
Compared with conventional solid-state lasers, fiber lasers have the advantages of small size, simple cooling system, and good output beam quality, enabling them an extended service lifetime in industrialized environments. Periodically arranged photonic crystals have been the most important gain medium for high-power laser applications, which overcame the problems in fiber lasers such as small mode field, low degree of nonlinearity, and non-adjustable dispersion. In this mini-review, we summarize the recent advances of typical ion-doped photonic crystal fiber lasers doped, discuss the challenges, and provide an outlook on the future developments in ion-doped photonic crystal fiber lasers.
Highlights
High-quality output laser systems are constantly pursued in solid-state lasers, due to their applications in laser ranging and laser medicine (Kim et al, 2020; Miura et al, 2020; Chen et al, 2021)
Photonic Crystal Fiber Lasers index, homogeneity) and spectral performance requirements, posing a challenge for these techniques. In this mini-review, we summarize the recent advances in doped photonic crystal fiber lasers, describe the basic structure and optical conduction mechanism of photonic crystal fibers
A chirped amplification system using a thulium-doped photonic crystal fiber with a mode field diameter of 65 μm and an air cladding of 260 μm was established by Stutzki et al (2015) A pulsed peak power of 200 MW, an average output power of 24 W, and a pulsed energy of 120 μJ were achieved with a 790 nm laser diode backward pumping
Summary
High-quality output laser systems are constantly pursued in solid-state lasers, due to their applications in laser ranging and laser medicine (Kim et al, 2020; Miura et al, 2020; Chen et al, 2021). One of the important strategies adopted to increase the mode instability threshold is the preparation of large mode field fibers with smaller core numerical apertures. These mentioned problems can be solved by the ion doping of photonic crystal structured fibers. Photonic Crystal Fiber Lasers index, homogeneity) and spectral (doping concentration, absorption and emission) performance requirements, posing a challenge for these techniques. In this mini-review, we summarize the recent advances in doped photonic crystal fiber lasers, describe the basic structure and optical conduction mechanism of photonic crystal fibers. The mini-review briefly discusses the challenges in the field and provides an outlook for the future
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