| 摘要 |
<p>Apparatus (3) and methods for inscribing materials including an optical coupling means (8) placed in contact with a non-flat, curved, irregular or uneven outer surface area (5) of the material (2) to form an interface therewith, a laser (6) and convergence means (9) spaced from the optical coupling means and arranged for directing electromagnetic radiation (7) from the laser into the optical coupling means and into the material via the interface to converge within the material to provide therein an intensity of radiation sufficient to inscribe the material. The optical coupling means is arranged to reduce the deviation of electromagnetic radiation from the laser directed through the interface . Subsequent etching of the inscribed material (in particular an optical fibre) enables selective removal of the laser-modified inscribed regions, revealing micro-channel structures within the material following a pattern defined by the path of the laser focus moving within the material .</p> |
