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Numerical calculation of nonlinear ultrashort laser pulse propagation in water

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Autorschaft

  • C. L. Arnold
  • A. Heisterkamp
  • W. Ertmer
  • H. Lubatschowski

Organisationseinheiten

Externe Organisationen

  • Laser Zentrum Hannover e.V. (LZH)
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Details

OriginalspracheEnglisch
Titel des SammelwerksCommercial and Biomedical Applications of Ultrafast Lasers IV
Herausgeber (Verlag)SPIE
Seiten47-54
Seitenumfang8
PublikationsstatusVeröffentlicht - 1 Juni 2004
VeranstaltungLasers and Applications in Science and Engineering - San Jose, Ca, USA / Vereinigte Staaten
Dauer: 25 Jan. 200429 Jan. 2004

Publikationsreihe

NameProceedings of SPIE - The International Society for Optical Engineering
Band5340
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.

ASJC Scopus Sachgebiete

Zitieren

Numerical calculation of nonlinear ultrashort laser pulse propagation in water. / Arnold, C. L.; Heisterkamp, A.; Ertmer, W. et al.
Commercial and Biomedical Applications of Ultrafast Lasers IV. SPIE, 2004. S. 47-54 (Proceedings of SPIE - The International Society for Optical Engineering; Band 5340).

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Arnold, CL, Heisterkamp, A, Ertmer, W & Lubatschowski, H 2004, Numerical calculation of nonlinear ultrashort laser pulse propagation in water. in Commercial and Biomedical Applications of Ultrafast Lasers IV. Proceedings of SPIE - The International Society for Optical Engineering, Bd. 5340, SPIE, S. 47-54, Lasers and Applications in Science and Engineering, San Jose, Ca, USA / Vereinigte Staaten, 25 Jan. 2004. https://doi.org/10.1117/12.529003
Arnold, C. L., Heisterkamp, A., Ertmer, W., & Lubatschowski, H. (2004). Numerical calculation of nonlinear ultrashort laser pulse propagation in water. In Commercial and Biomedical Applications of Ultrafast Lasers IV (S. 47-54). (Proceedings of SPIE - The International Society for Optical Engineering; Band 5340). SPIE. https://doi.org/10.1117/12.529003
Arnold CL, Heisterkamp A, Ertmer W, Lubatschowski H. Numerical calculation of nonlinear ultrashort laser pulse propagation in water. in Commercial and Biomedical Applications of Ultrafast Lasers IV. SPIE. 2004. S. 47-54. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.529003
Arnold, C. L. ; Heisterkamp, A. ; Ertmer, W. et al. / Numerical calculation of nonlinear ultrashort laser pulse propagation in water. Commercial and Biomedical Applications of Ultrafast Lasers IV. SPIE, 2004. S. 47-54 (Proceedings of SPIE - The International Society for Optical Engineering).
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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 Schr{\"o}dinger 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.",
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