Transmission of kilowatt-class CO_2 laser light through dielectric-coated metallic hollow waveguides for material processing

Hongo, Akihito; Morosawa, K.; Matsumoto, Kazuhisa; Shiota, T.; Hashimoto, Takashi

doi:10.1364/ao.31.005114

Cited by 65 publications

(11 citation statements)

References 14 publications

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“…In contrast to solid-core IR fibers, their hollow-core counterparts have high damage thresholds for high-peak-power and highaverage-power lasers (over a kilowatt of CW laser power in Ref. [421], for instance). Indeed, it has been noted that front-end clipping in a CO 2 laser beam delivered through a hollow-core metal fiber is the main cause of thermal loading [422].…”

Section: Other Infrared Fibersmentioning

confidence: 99%

Infrared fibers

et al. 2015

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Infrared (IR) fibers offer a versatile approach to guiding and manipulating light in the IR spectrum, which is becoming increasingly more prominent in a variety of scientific disciplines and technological applications. Despite well-established efforts on the fabrication of IR fibers in past decades, a number of remarkable breakthroughs have recently rejuvenated the field-just as related areas in IR optical technology are reaching maturation. In this review, we describe both the history and recent developments in the design and fabrication of IR fibers, including IR glass and single-crystal fibers, multimaterial fibers, and fibers that exploit the transparency window of traditional crystalline semiconductors. This interdisciplinary review will be of interest to researchers in optics and photonics, materials science, and electrical engineering.

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Section: Other Infrared Fibersmentioning

confidence: 99%

Infrared fibers

et al. 2015

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“…Dielectric-coated metallic hollow fibers have been widely used in industrial and medical fields [18][19][20] . The base tube of the fiber is a fused glass capillary tube with an external PI protective layer.…”

Section: Porperty and Fabrication Of Hollow Fibermentioning

confidence: 99%

Experimental study on the durability of dielectric-coated silver hollow fibers for corrosive gas sensing

et al. 2010

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The possibility of spectroscopic gas sensing using infrared hollow fiber as the absorption cell was demonstrated. By optimizing the coating dielectric material and fiber structure parameters, hollow fiber obtains low-loss property at the absorption wavelength band of various gases. Using low-loss infrared hollow fiber as the gas absorption cell has the potential advantages of miniaturization, high sensitivity, small gas sample volume, and thus rapid response. Several kinds of dielectric-coated silver hollow fibers were fabricated and tested for corrosive gas sensing. The durability of the fibers, with inner coating film of silver and silver iodide (AgI), cyclic olefin polymer (COP), SiO 2 , polycarbonate (PC), as well as Ag tube were discussed experimentally. We used NH 3 , HCl, and ammonia, hydrochloric acid as the corrosive gas or liquid. By flowing the corrosive material through the hollow fiber, durability of the fiber on these corrosives were measured. Experimental results showed that AgI/Ag and COP/Ag hollow fiber have high durability.

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“…1,[10][11][12][13][14][15] In our previous work two types of dielectric coatings were investigated -Cyclic Olefin Polymer(COP) 16 and Fluorocarbon Polymer(FCP). 17 From the point of level of the internal losses COP was chosen for further study.…”

Section: Delivery Of 3 µM Radiation By Hollow Waveguidementioning

confidence: 99%

Medical applications of 3 μm delivery waveguide system

et al. 2006

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The hollow glass waveguide is one of a few instruments favored in industrial and medical fields for the delivery of mid-infrared laser light. The article summarizes the delivery of the Er:YAG laser radiation (λ = 2.94 µm) by the cyclic olefin polymer coated silver hollow glass waveguides with various inner diameters -320 µm, 700 µm, and 1 mm, and with a length of 0.1 -1 m. For medical applications, the so called "contact mode", in which the end of the waveguide is in contact with the soft or hard tissues, is discussed. For this treatment special sealed caps were used for preventing the waveguide system damage.Delivery of long (free-running) and short (Q-switched) mid-infrared pulses was investigated. The delivery systems were investigated for the ophthalmic, urologic, and dental tissue treatments. The comparison of interaction effects caused by the laser pulses with various lengths was made.

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Transmission of kilowatt-class CO_2 laser light through dielectric-coated metallic hollow waveguides for material processing

Cited by 65 publications

References 14 publications

Infrared fibers

Infrared fibers

Experimental study on the durability of dielectric-coated silver hollow fibers for corrosive gas sensing

Medical applications of 3 μm delivery waveguide system

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