Pulsed HF laser radiation transmission through fluorocarbon polymer - Coated silver hollow glass waveguides

Serafetinides, AA; Rickwood, KR; Anastassopoulou, N; Wang, Y; Shi, Y-W; Miyagi, M

dc.contributor.author	Serafetinides, AA	en
dc.contributor.author	Rickwood, KR	en
dc.contributor.author	Anastassopoulou, N	en
dc.contributor.author	Wang, Y	en
dc.contributor.author	Shi, Y-W	en
dc.contributor.author	Miyagi, M	en
dc.date.accessioned	2014-03-01T02:48:34Z
dc.date.available	2014-03-01T02:48:34Z
dc.date.issued	1997	en
dc.identifier.issn	0277786X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33905
dc.subject	HF laser	en
dc.subject	Laser - tissue interaction	en
dc.subject	Waveguides	en
dc.subject.other	Attenuation	en
dc.subject.other	Coatings	en
dc.subject.other	Fluorocarbons	en
dc.subject.other	Laser beam effects	en
dc.subject.other	Laser pulses	en
dc.subject.other	Laser tissue interaction	en
dc.subject.other	Polymers	en
dc.subject.other	Laser radiation	en
dc.subject.other	Waveguides	en
dc.title	Pulsed HF laser radiation transmission through fluorocarbon polymer - Coated silver hollow glass waveguides	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1117/12.301120	en
heal.identifier.secondary	http://dx.doi.org/10.1117/12.301120	en
heal.publicationDate	1997	en
heal.abstract	Flexible fluorocarbon polymer - coated silver hollow glass waveguides, devised for the delivery of 3.0 μm radiation, were evaluated using a plasma cathode HF laser emitting at 2.78 μm, in a 180 ns duration, at a 1 Hz repetition rate. A multimode beam of 10 mrad divergence at FWHM, was focused into the 700 μm diameter, 986 mm long waveguide and was transmitted through it under straight and various bent conditions. The straight transmission loss was found to be 0.9 dB/m, while the bent transmission losses varied from 2.0 dB/m (90° bent - 35 cm bending radius) to 2.4 dB/m (180° bent - 10 cm bending radius), for the range of measurements attempted. Transmission as a function of the laser energy input was also measured. Losses increased from 1.5 dB/m at 3 mJoules to 7.0 dB/m at 20 mJoules laser input. These attenuation characteristics at the wavelength of 2.78 μm make these waveguides very prong for pulsed radiation and tissue interactions in in vitro and in vivo trials.	en
heal.journalName	Proceedings of SPIE - The International Society for Optical Engineering	en
dc.identifier.doi	10.1117/12.301120	en
dc.identifier.volume	3199	en
dc.identifier.spage	94	en
dc.identifier.epage	102	en