Toward all-fiber supercontinuum spanning the mid-infrared

A novel chalcohalide fiber with high nonlinearity and low material zero‐dispersion via extrusion

“…Tapering is the simplest way to scale down the fiber ZDW. Recently, an MIR SC spectrum covering 1.8‐9.5 μm was demonstrated in a tapered As‐Se step‐index fiber with a 3 μm‐diameter core . However, tapering the fiber to small dimensions comes with the cost of power handling and light confinement in the fiber core.…”

“…Recently, an MIR SC spectrum covering 1.8-9.5 μm was demonstrated in a tapered As-Se step-index fiber with a 3 μm-diameter core. 11 However, tapering the fiber to small dimensions comes with the cost of power handling and light confinement in the fiber core. Micro-structuring is another way to tune the dispersion in photonic crystal fibers (PCF).…”

Mid-infrared fiber-coupled supercontinuum spectroscopic imaging using a tapered chalcogenide photonic crystal fiber

“…However, only preliminary work has been performed with using supercontinuum (SC) sources for spectroscopic imaging in the mid-IR region [3][4][5]. The use of mid-IR supercontinuum sources for spectroscopic imaging has the potential for covering both the functional group region (2.5-6.7 μm) and part of the fingerprint region (6.7-15 μm) from a single compact source [6][7][8][9], that can be several orders of magnitude brighter than a synchrotron IR beamline [5] whilst being compatible with existing broadband technologies such as Fouriertransform infrared (FTIR) spectrometry and array detectors. This demonstration represents one of the first steps toward developing SC-based spectroscopic imaging in the mid-IR and is among several results of the European research project MINERVA: MId-to NEaR infrared spectroscopy for improVed medical diAgnostics, that was a collaboration between thirteen organizations from industry and academia across seven European nations with the goal of developing mid-IR technologies for high-volume pathology screening and in-vivo skin surface examination for the early diagnosis of cancer.…”

High Power and Short Pulse Width Operation of Passively Q-Switched Er:Lu2O3 Ceramic Laser at 2.7 μm

“…Solid-state lasers based on Er 3+ emitting around 3 µm have attracted significant attention because of their potential for numerous applications, such as laser microsurgery, laser radar, plastic and polymer processing, and pumps for longer wavelength oscillations [1][2][3]. Lasing on the 4 I 11/2 → 4 I 13/2 transition of Er 3+ ions has been widely studied with a variety of host materials at the mentioned spectral region [4][5][6][7][8][9][10].…”