Laser ablation

B - Operations – Transporting – 23 – K

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B23K 26/03 (2006.01) B23K 26/38 (2006.01) A61F 9/008 (2006.01)

Patent

CA 2428111

The invention provides a method for measuring in situ the amountof material removed by laser ablation with ultrshort laser pulses. The method relies on the geometrical information provided by the backscattered light from the ablating laser. The temporal structure of the backscattered laser light is used to provide an accurate measure for the depth of the ablated area, since the round-trip time for the short laser pulses uniquely determines the distance to the object under illumination. For femtosecond laserpulses a depth resolution of a few micrometers can be achieved. According to the invention, imaging of the backscattered light from a single ablating pulse provides all the information necessary to derive a cross-sectional profile across the ablated region.

L'invention concerne un procédé destiné à mesurer in situ la quantité de matériau retiré par ablation par laser par impulsions laser ultracourtes. Le procédé s'appuie sur les informations géométriques fournies par la lumière rétrodiffusée du laser d'ablation. La structure temporelle de la lumière laser rétrodiffusée sert à produire une mesure exacte de la profondeur de la zone d'ablation, étant donné que la durée du cycle d'opération pour les impulsions laser courtes détermine uniquement la distance par rapport à l'objet éclairé. Pour des impulsions lasers femtosecondes, il est possible de réaliser une résolution en profondeur de quelques micromètres. Selon l'invention, l'imagerie de la lumière rétrodiffusée à partir d'une seule impulsion d'ablation fournit toutes les informations nécessaires pour dériver un profil transversal dans la région d'ablation.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Laser ablation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Laser ablation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser ablation will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1389243

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.