Novel methods of intracavity beam shaping

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Methods of shaping laser beams within the laser resonator are studied. The simplest form of shaping is the spatial mode generation inherent in the laser cavity due to the geometry of the resonator in conjunction with gain to compensate for roundtrip losses, such as diffraction and output coupling. Typically the fundamental mode or multimode behavior is exhibited from such configurations. Passive mode shaping can be accomplished by introducing static amplitude or phase masks. An example of an amplitude mask is provided in order to generate a higher-order spatial mode. Active mode shaping can be accomplished by altering the optical pump distribution. This case is studied experimentally with a diode-end-pumped Nd:YVO4 laser and compared to modeling of expected Hermite-Gaussian mode generation. Active mode shaping allows the preferred mode distribution to be altered in real time. Additional shaping can be done following the resonator to modify a Hermite-Gaussian mode into a psuedo-Laguerre-Gaussian mode. This work also shows that using the coherent propagation method of Gaussian beam decomposition is capable of modeling and describing intracavity beam shaping.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsF.M. Dickey, S.C. Holswade, D.L. Shealy
Pages47-57
Number of pages11
Volume4443
DOIs
StatePublished - 2001
Externally publishedYes
EventLaser Beam Shaping II - San Diego,CA, United States
Duration: Aug 2 2001Aug 3 2001

Other

OtherLaser Beam Shaping II
CountryUnited States
CitySan Diego,CA
Period8/2/018/3/01

Fingerprint

Laser resonators
Masks
Resonators
Gaussian beams
Laser modes
Laser beams
Diodes
Diffraction
Pumps
Decomposition
Geometry
Lasers
resonators
masks
laser cavities
lasers
diodes
laser beams
pumps
decomposition

Keywords

  • Coherent propagation
  • Hermite-Gaussian mode
  • Laguerre-Gaussian mode
  • Laser beam shaping
  • Laser resonator
  • Solid-state lasers
  • Transverse modes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Koshel, R. J. (2001). Novel methods of intracavity beam shaping. In F. M. Dickey, S. C. Holswade, & D. L. Shealy (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4443, pp. 47-57) https://doi.org/10.1117/12.446753

Novel methods of intracavity beam shaping. / Koshel, Richard John.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / F.M. Dickey; S.C. Holswade; D.L. Shealy. Vol. 4443 2001. p. 47-57.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Koshel, RJ 2001, Novel methods of intracavity beam shaping. in FM Dickey, SC Holswade & DL Shealy (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4443, pp. 47-57, Laser Beam Shaping II, San Diego,CA, United States, 8/2/01. https://doi.org/10.1117/12.446753
Koshel RJ. Novel methods of intracavity beam shaping. In Dickey FM, Holswade SC, Shealy DL, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4443. 2001. p. 47-57 https://doi.org/10.1117/12.446753
Koshel, Richard John. / Novel methods of intracavity beam shaping. Proceedings of SPIE - The International Society for Optical Engineering. editor / F.M. Dickey ; S.C. Holswade ; D.L. Shealy. Vol. 4443 2001. pp. 47-57
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