Showing papers by "Tao Luo published in 2014"
TL;DR: Preliminary experiments show that high laser efficiency can be obtained from a relatively short length of the gain fiber when resonantly pumped at 1535 nm in both core- and cladding-pumping configurations.
Abstract: A highly efficient ytterbium-free erbium-doped silicate glass fiber has been developed for high-power fiber laser applications at an eye-safe wavelength near 1.55 μm. Our preliminary experiments show that high laser efficiency can be obtained from a relatively short length of the gain fiber when resonantly pumped at 1535 nm in both core- and cladding-pumping configurations. With a core-pumping configuration as high as 75%, optical-to-optical efficiency and 4 W output power were obtained at 1560 nm from a 1 m long gain fiber. When using a cladding-pumping configuration, approximately 13 W output power with 67.7% slope efficiency was demonstrated from a piece of 2 m long fiber. The lengths of silicate-based gain fiber are much shorter than their silica-based counterparts used in other experiments, which is significantly important for high-power narrow-band and/or pulsed laser applications.
5 citations
16 Nov 2014
TL;DR: In this paper, a monolithic polarization maintaining fiber chirped pulse amplification system with 30 cm Yb3+-doped high efficiency media fiber that generates 25 µJ sub-500 fs pulses with 20 W at 1.03 µm has been demonstrated.
Abstract: A monolithic polarization maintaining fiber chirped pulse amplification system with 30 cm Yb3+-doped high efficiency media fiber that generates 25 µJ sub-500 fs pulses with 20 W at 1.03 µm has recently been demonstrated.
29 Dec 2014
TL;DR: In this article, the authors present strategies for obtaining glasses with wide optical transparencies and sufficiently high glass forming ability to produce complex optical elements such as single mode fibers, which find applications in many infrared technology including thermal imaging, laser guiding and most importantly, vibrational sensing of chemical and biomolecules.
Abstract: The paper reviews strategies for obtaining glasses with wide optical transparencies and sufficiently high glass forming ability to produce complex optical elements such as single mode fibers. These fibers find applications in many infrared technology including thermal imaging, laser guiding and most importantly, vibrational sensing of chemical and biomolecules.