We developed a new holmium-doped triple-clad fiber (Ho-3CF), reducing the clad diameter
to improve the overlap between pump and doped-core, and the holmium concentration to …

We present a holmium-doped all-fiber master oscillator power amplifier (MOPA) system
operating at 2108 nm targeting optical frequency conversion applications. The MOPA …

Efficient holmium fiber lasers have been studied as attractive laser sources operating
around 2.1 μm. We report on holmium-doped silica fibers prepared by the modified chemical …

A detailed analysis of theexcited state absorption (ESA) transition 4 I 13/2→ 4 I 9/2 which
occurs in erbium (Er) doped ZBLAN fiber lasers is performed through numerical modeling. It …

A novel 0.98 μm and 1.15 μm dual-wavelength pum** scheme for cascaded mid-infrared
Er-doped ZBLAN fiber laser at 3.44 μm and 2.78 μm is proposed and analyzed by a detailed …

We report on our realization of a high-power holmium doped fiber laser, together with the
validation of our numerical simulation of the laser. We first present the measurements of the …

In this paper, we address the performance optimization of Holmium doped fiber amplifier
(HDFA) for optical communications in 2–2.15 μm wavelength range based on a single in …

Absorption of continuous wave and pulsed resonance radiation at a wavelength of 1.6 µm at
the upward transition from the excited state of holmium (Ho 3+) ions in silica-based fiber has …

The optical communication window around 2 μ m is attracting significant research attention
for future optical communication systems as an extension to the C-, L-, and U-bands. One of …

We report the design and demonstration of novel 2 μm band Watt-level fiber amplifiers, fiber
lasers, and wideband ASE sources that are pumped with broad spectrum Watt-level ASE …