Midinfrared free electron laser power delivery through a chalcogenide glass fiber

Abstract

This article reports on the results of free electron laser (FEL) power transmission measurements through chalcogenide fibers. The FEL power transmission was tested by two types of chalcogenaide NSEG fibers, a normal fiber and a tapered fiber, made by varying the drawing speed from 2 to 17 cm/min. As a result, the tapered NSEG fiber is able to transmit 5–7 μm FEL power with a 10 MW/micropulse without surface damage. Tapered NSEG fibers are useful, therefore, for power transmission to narrow spaces such as the slide glass between the stage and the objective lens in a microscope.

Selective removal of cholesterol esters in an arteriosclerotic region of blood vessels with a free-electron laser

“…However, the tube is difficult to deliver to small targets in a narrow space, such as an artery, because of the required flexibility of the optics. For this purpose, we propose using chalcogenide glass fibers, which have been developed for thermal measurements and power transmission for infrared lasers [8]. In the near future, infrared glass fibers can be used as a delivery tool for angioplasty.…”

Alignment Control of a Columnar Liquid Crystal for a Uniformly Homeotropic Domain Using Circularly Polarized Infrared Irradiation

“…Microscopic infrared absorption dichroism was measured by a microscopic Fourier-transform infrared (FTIR) spectrophotometer (Horiba FTIR-520). The infrared beam was provided by the FEL system at Osaka University, with which one can obtain a tuned beam wavelength [12]. …”

Anisotropic Change of Liquid‐Crystal Domains by Polarized Infrared Pulse Laser Irradiation for a Columnar Mesophase

“…The microscopic IR absorption dichroism of the C6OTP film was measured by a microscopic FTIR spectrophotometer (Horiba FTIR-520). The IR pulsed beam was provided by the FEL system at Osaka University, with which one can obtain a tuned beam wavelength [34].…”