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- Title
Development of a Lens-less Mid-Infrared Laser Head for the Optical Fiber Tip Oscillation to Apply to Therapeutic Treatment.
- Authors
OMORI, S. H. I. G. E. R. U.
- Abstract
SUMMARY Mid-infrared lasers having the wavelength of the vicinity of 3 μm are considered as effective for the treatment of biomedical tissue because of the strong absorption to water. The drawback of 3 μm laser is the difficulty to propagate the silica optical fiber. We have reported the optical fiber tip oscillation laser that has a Er,Cr:YAGG laser crystal and coupling lenses on the tip of a silica fiber outputs 2.8 μm laser pumped by laser diode. In this paper, we demonstrated a lens-less laser head for the optical fiber tip oscillation. By using the silica optical fiber having a core diameter of 105 μm and a numerical aperture of 0.12, the average output power of 1.0 W was achieved from the lens-less laser head during a squire wave modulation for suppressing heat generation.
- Subjects
MEDICAL lasers; MID-infrared lasers; OPTICAL fibers; WAVELENGTHS; LASER beams; SEMICONDUCTOR lasers
- Publication
Electronics & Communications in Japan, 2018, Vol 101, Issue 2, p3
- ISSN
1942-9533
- Publication type
Article
- DOI
10.1002/ecj.12024