dc.contributor.author |
Litvin, IA
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dc.contributor.author |
Loveday, Philip W
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dc.contributor.author |
Long, Craig S
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dc.contributor.author |
Kazak, NS
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dc.contributor.author |
Belyi, V
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dc.contributor.author |
Forbes, A
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dc.date.accessioned |
2010-01-06T14:56:04Z |
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dc.date.available |
2010-01-06T14:56:04Z |
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dc.date.issued |
2008-08 |
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dc.identifier.citation |
Litvin, IA, Loveday, PW, Long, CS et al. 2008. Intracavity mode competition between classes of flat–top beams. Laser Beam Shaping IX Conference, San Diego, USA, 11 August 2008, pp 1-9 |
en |
dc.identifier.isbn |
9780819477200 |
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dc.identifier.issn |
0277-786X |
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dc.identifier.uri |
http://hdl.handle.net/10204/3842
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dc.identifier.uri |
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/7062/706210/Intracavity-mode-competition-between-classes-of-flat-top-beams/10.1117/12.793686.full
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dc.identifier.uri |
https://doi.org/10.1117/12.793686
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dc.description |
Copyright 2008. Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited |
en |
dc.description.abstract |
There are many applications in which a laser beam with a flat–top intensity profile would be ideal, as compared to a laser beam with a non–uniform energy distribution. Standard stable optical resonators will unfortunately not generate such a laser beam as the oscillating mode. Single–mode oscillation would typically be Gaussian in profile, while multimode oscillation might deliver a beam with an averaged flat–like profile in the near field, but would diverge very quickly due to the higher order modes. In addition, if the modes are coherently coupled, then large intensity oscillations could be expected across the beam. Techniques exist to generate flat–top beams external to the cavity, but this is usually at the expense of energy, and almost always requires very precise input beam parameters. In this paper we present the design of an optical resonator that produces as the stable transverse mode a flat–top laser beam, by making use of an intra-cavity diffractive mirror. We consider the modal build–up in such a resonator and compare the mode competition between flat–top like beams, including Flattened Gaussian beams, Fermi–Dirac beams, and super–Gaussian beams. Finally, we remark on the use of an intra–cavity piezoelectric unimorph mirror for selecting a particular class of flat–top beam as the fundamental mode of the resonator. |
en |
dc.language.iso |
en |
en |
dc.publisher |
Society of Photo-Optical Instrumentation Engineers (SPIE) |
en |
dc.subject |
Flat-top beams |
en |
dc.subject |
Intra-cavity diffractive mirror |
en |
dc.subject |
Piezoelectric unimorph mirror |
en |
dc.subject |
Resonator modes |
en |
dc.title |
Intracavity mode competition between classes of flat–top beams |
en |
dc.type |
Conference Presentation |
en |
dc.identifier.apacitation |
Litvin, I., Loveday, P. W., Long, C. S., Kazak, N., Belyi, V., & Forbes, A. (2008). Intracavity mode competition between classes of flat–top beams. Society of Photo-Optical Instrumentation Engineers (SPIE). http://hdl.handle.net/10204/3842 |
en_ZA |
dc.identifier.chicagocitation |
Litvin, IA, Philip W Loveday, Craig S Long, NS Kazak, V Belyi, and A Forbes. "Intracavity mode competition between classes of flat–top beams." (2008): http://hdl.handle.net/10204/3842 |
en_ZA |
dc.identifier.vancouvercitation |
Litvin I, Loveday PW, Long CS, Kazak N, Belyi V, Forbes A, Intracavity mode competition between classes of flat–top beams; Society of Photo-Optical Instrumentation Engineers (SPIE); 2008. http://hdl.handle.net/10204/3842 . |
en_ZA |
dc.identifier.ris |
TY - Conference Presentation
AU - Litvin, IA
AU - Loveday, Philip W
AU - Long, Craig S
AU - Kazak, NS
AU - Belyi, V
AU - Forbes, A
AB - There are many applications in which a laser beam with a flat–top intensity profile would be ideal, as compared to a laser beam with a non–uniform energy distribution. Standard stable optical resonators will unfortunately not generate such a laser beam as the oscillating mode. Single–mode oscillation would typically be Gaussian in profile, while multimode oscillation might deliver a beam with an averaged flat–like profile in the near field, but would diverge very quickly due to the higher order modes. In addition, if the modes are coherently coupled, then large intensity oscillations could be expected across the beam. Techniques exist to generate flat–top beams external to the cavity, but this is usually at the expense of energy, and almost always requires very precise input beam parameters. In this paper we present the design of an optical resonator that produces as the stable transverse mode a flat–top laser beam, by making use of an intra-cavity diffractive mirror. We consider the modal build–up in such a resonator and compare the mode competition between flat–top like beams, including Flattened Gaussian beams, Fermi–Dirac beams, and super–Gaussian beams. Finally, we remark on the use of an intra–cavity piezoelectric unimorph mirror for selecting a particular class of flat–top beam as the fundamental mode of the resonator.
DA - 2008-08
DB - ResearchSpace
DP - CSIR
KW - Flat-top beams
KW - Intra-cavity diffractive mirror
KW - Piezoelectric unimorph mirror
KW - Resonator modes
LK - https://researchspace.csir.co.za
PY - 2008
SM - 9780819477200
SM - 0277-786X
T1 - Intracavity mode competition between classes of flat–top beams
TI - Intracavity mode competition between classes of flat–top beams
UR - http://hdl.handle.net/10204/3842
ER -
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en_ZA |