Details
| Original language | English |
|---|---|
| Title of host publication | Commercial and Biomedical Applications of Ultrafast Lasers IV |
| Publisher | SPIE |
| Pages | 47-54 |
| Number of pages | 8 |
| Publication status | Published - 1 Jun 2004 |
| Event | Lasers and Applications in Science and Engineering - San Jose, Ca, United States Duration: 25 Jan 2004 → 29 Jan 2004 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 5340 |
| ISSN (Print) | 0277-786X |
Abstract
When ultrashort laser pulses are focused inside transparent materials, extremely high field intensities can easily be achieved in the focal volume leading to nonlinear interaction with the material. In corneal tissue this nonlinear interaction results in an optical breakdown that may serve as a cutting mechanism in ophthalmology. As a side effect of optical breakdown in corneal tissue, streak-like structures have been observed as discoloration in histological sections under a light microscope. To investigate the streak formation, a numerical model including nonlinear pulse propagation due to self-focusing, group velocity dispersion, and plasma defocusing due to generated free electrons is presented. The model consists of a (3+1)-dimensional nonlinear Schrödinger equation, describing the pulse propagation coupled to an evolution equation covering the generation of free electrons. The rate equation contains multi photon ionization as well as avalanche ionization. The model is applicable to any transparent Kerr-medium.
Keywords
- Nonlinear Pulse Propagation, Ophthalmology, Optical Breakdown, Ultrashort Laser Pulses
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
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Commercial and Biomedical Applications of Ultrafast Lasers IV. SPIE, 2004. p. 47-54 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 5340).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Numerical calculation of nonlinear ultrashort laser pulse propagation in water
AU - Arnold, C. L.
AU - Heisterkamp, A.
AU - Ertmer, W.
AU - Lubatschowski, H.
PY - 2004/6/1
Y1 - 2004/6/1
N2 - When ultrashort laser pulses are focused inside transparent materials, extremely high field intensities can easily be achieved in the focal volume leading to nonlinear interaction with the material. In corneal tissue this nonlinear interaction results in an optical breakdown that may serve as a cutting mechanism in ophthalmology. As a side effect of optical breakdown in corneal tissue, streak-like structures have been observed as discoloration in histological sections under a light microscope. To investigate the streak formation, a numerical model including nonlinear pulse propagation due to self-focusing, group velocity dispersion, and plasma defocusing due to generated free electrons is presented. The model consists of a (3+1)-dimensional nonlinear Schrödinger equation, describing the pulse propagation coupled to an evolution equation covering the generation of free electrons. The rate equation contains multi photon ionization as well as avalanche ionization. The model is applicable to any transparent Kerr-medium.
AB - When ultrashort laser pulses are focused inside transparent materials, extremely high field intensities can easily be achieved in the focal volume leading to nonlinear interaction with the material. In corneal tissue this nonlinear interaction results in an optical breakdown that may serve as a cutting mechanism in ophthalmology. As a side effect of optical breakdown in corneal tissue, streak-like structures have been observed as discoloration in histological sections under a light microscope. To investigate the streak formation, a numerical model including nonlinear pulse propagation due to self-focusing, group velocity dispersion, and plasma defocusing due to generated free electrons is presented. The model consists of a (3+1)-dimensional nonlinear Schrödinger equation, describing the pulse propagation coupled to an evolution equation covering the generation of free electrons. The rate equation contains multi photon ionization as well as avalanche ionization. The model is applicable to any transparent Kerr-medium.
KW - Nonlinear Pulse Propagation
KW - Ophthalmology
KW - Optical Breakdown
KW - Ultrashort Laser Pulses
UR - http://www.scopus.com/inward/record.url?scp=3543119549&partnerID=8YFLogxK
U2 - 10.1117/12.529003
DO - 10.1117/12.529003
M3 - Conference contribution
AN - SCOPUS:3543119549
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 47
EP - 54
BT - Commercial and Biomedical Applications of Ultrafast Lasers IV
PB - SPIE
T2 - Lasers and Applications in Science and Engineering
Y2 - 25 January 2004 through 29 January 2004
ER -