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Fabrication of Pure Silica Core Multimode Ultraviolet Optical Fibre Probes by Tube Etching |
| HUO Xin;PAN Shi;WU Shi-Fa |
| Institute of Near-field Optics and Nanotechnology, Department of Physics, Dalian University of Technology, Dalian 116024 |
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| Cite this article: |
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HUO Xin, PAN Shi, WU Shi-Fa 2007 Chin. Phys. Lett. 24 2876-2878 |
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Abstract As a light wave-guide component for transmitting ultraviolet (UV) laser pulses, pure silica core UV fibre probes have attracted a great deal of attention in the near-field optical data storage and bio-medical studies. We fabricate UV fibre probes with tips in dimension of about 2--5μm and taper angle 16°by the tube etching method, using 40% HF acid as etching solution and xylene as overlayer. Probes produced have curvy configuration with smooth surface. The yield of fine probes is rather high and etching operation greatly simplified. With higher damage threshold, pure silica core multimode UV fibre probes can be coupled into more laser power. In addition, using UV light reduces the cutoff wavelength of the fibre probes, which is in favour of increasing the
transmission efficiency of the probe. Furthermore, the larger tip dimension helps to enhance the light throughput either. The advances of fabrication technique of UV optical fibre probe may further support the studies of UV light data storage, pulsed laser biosurgery and UV photolithography.
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| Keywords:
42.81.Bm
42.81.Qb
68.37.Uv
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Received: 15 July 2007
Published: 20 September 2007
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| PACS: |
42.81.Bm
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(Fabrication, cladding, and splicing)
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42.81.Qb
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(Fiber waveguides, couplers, and arrays)
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68.37.Uv
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(Near-field scanning microscopy and spectroscopy)
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