Transmission Of Short Pulsed High Power UV Laser Radiation Through Fibres Depending On Pulse Length, Intensity And Long Term Behaviour

G. Muller; H. Kar; K. Dorschel; H. Ringelhan

doi:10.1117/12.945284

21 June 1988 Transmission Of Short Pulsed High Power UV Laser Radiation Through Fibres Depending On Pulse Length, Intensity And Long Term Behaviour

G. Muller, H. Kar, K. Dorschel, H. Ringelhan

Author Affiliations +

Proceedings Volume 0906, Optical Fibers in Medicine III; (1988) https://doi.org/10.1117/12.945284
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

The dependence of the transmittance efficiency on input pulse energy density and flux is given. Several fibres showed a decrease in the transmittance efficiency after long term irradiation. Spectroscopic measure-ment of transmitted and fluorescent light will be presented. The dependence of damage thresholds for 1000, 600, 400 and 300 μm core diameter quartz fibres as a function of pulse length (6-300 ns), energy densities (up to 32 J/cm2), fibre preparation and the surrounding environment at the input and output of the fibre is also shown. This paper shows the results obtained when short pulsed high power UV laser radiation is transmitted through a fibre. Coupling of this laser radiation with non adequate parameters at 308 nm into quartz fibres will lead to a result as shown in Fig. 1. It shows material processing of the front surface of a 600 pm quartz fibre. One can see the beam profile of the laser punched into the fibre.

Citation Download Citation

G. Muller, H. Kar, K. Dorschel, and H. Ringelhan "Transmission Of Short Pulsed High Power UV Laser Radiation Through Fibres Depending On Pulse Length, Intensity And Long Term Behaviour", Proc. SPIE 0906, Optical Fibers in Medicine III, (21 June 1988); https://doi.org/10.1117/12.945284

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