dc.contributor.author |
Bell, Lebohang T
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|
dc.contributor.author |
Kgomo, Mosima B
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|
dc.contributor.author |
Ngcobo, Sandile
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|
dc.date.accessioned |
2020-06-10T12:05:57Z |
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dc.date.available |
2020-06-10T12:05:57Z |
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dc.date.issued |
2020-05 |
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dc.identifier.citation |
Bell, L. T., Kgomo, M.B. and Ngcobo, S. 2020. Digital laser for on-demand intracavity selective excitation of second harmonic higher-order modes. Optics Express, vol. 28(11): 16907-16923 |
en_US |
dc.identifier.issn |
1094-4087 |
|
dc.identifier.uri |
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-28-11-16907
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|
dc.identifier.uri |
https://doi.org/10.1364/OE.385569
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dc.identifier.uri |
http://hdl.handle.net/10204/11458
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|
dc.description |
© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement |
en_US |
dc.description.abstract |
In this article, we demonstrate selective excitation of second harmonic higher-order modes inside a diode end-pumped solid-state laser resonator that comprises of a nonlinear potassium titanyl phosphate (KTP) crystal and a digitally addressed holographic end-mirror in a form of a reflective phase-only spatial light modulator (SLM). The emitted second harmonic higher-order modes at 532 nm are generated by an intracavity nonlinear KTP crystal that is pumped by high-order fundamental modes operating at 1064 nm. The fundamental modes are digitally controlled by displaying a computer-generated hologram in the formof a grey-scale image to the SLM screen for on-demand high-order modes. The phase matching of the fundamental mode to the generated frequency-doubled mode is achieved by controlling the phase of the digital hologram to either achieve a high or quasi-degree of orbital angular momentum conservation. We show that we can intracavity generate frequency-doubled high-order Laguerre-Gaussian modes and Hermit-Gaussian modes that are either quasi or fully reproducible in the far-field. To the best of our knowledge, this is the first laser to generate frequency-doubled on-demand higher-order modes inside the cavity at the visible (green) wavelength of 532 nm. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Optical Society of America |
en_US |
dc.relation.ispartofseries |
Worklist;23558 |
|
dc.subject |
Digital lasers |
en_US |
dc.subject |
Spatial light modulator |
en_US |
dc.subject |
Nonlinear optics |
en_US |
dc.subject |
KTP |
en_US |
dc.subject |
Solid state lasers |
en_US |
dc.title |
Digital laser for on-demand intracavity selective excitation of second harmonic higher-order modes |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Bell, L. T., Kgomo, M. B., & Ngcobo, S. (2020). Digital laser for on-demand intracavity selective excitation of second harmonic higher-order modes. http://hdl.handle.net/10204/11458 |
en_ZA |
dc.identifier.chicagocitation |
Bell, Lebohang T, Mosima B Kgomo, and Sandile Ngcobo "Digital laser for on-demand intracavity selective excitation of second harmonic higher-order modes." (2020) http://hdl.handle.net/10204/11458 |
en_ZA |
dc.identifier.vancouvercitation |
Bell LT, Kgomo MB, Ngcobo S. Digital laser for on-demand intracavity selective excitation of second harmonic higher-order modes. 2020; http://hdl.handle.net/10204/11458. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Bell, Lebohang T
AU - Kgomo, Mosima B
AU - Ngcobo, Sandile
AB - In this article, we demonstrate selective excitation of second harmonic higher-order modes inside a diode end-pumped solid-state laser resonator that comprises of a nonlinear potassium titanyl phosphate (KTP) crystal and a digitally addressed holographic end-mirror in a form of a reflective phase-only spatial light modulator (SLM). The emitted second harmonic higher-order modes at 532 nm are generated by an intracavity nonlinear KTP crystal that is pumped by high-order fundamental modes operating at 1064 nm. The fundamental modes are digitally controlled by displaying a computer-generated hologram in the formof a grey-scale image to the SLM screen for on-demand high-order modes. The phase matching of the fundamental mode to the generated frequency-doubled mode is achieved by controlling the phase of the digital hologram to either achieve a high or quasi-degree of orbital angular momentum conservation. We show that we can intracavity generate frequency-doubled high-order Laguerre-Gaussian modes and Hermit-Gaussian modes that are either quasi or fully reproducible in the far-field. To the best of our knowledge, this is the first laser to generate frequency-doubled on-demand higher-order modes inside the cavity at the visible (green) wavelength of 532 nm.
DA - 2020-05
DB - ResearchSpace
DP - CSIR
KW - Digital lasers
KW - Spatial light modulator
KW - Nonlinear optics
KW - KTP
KW - Solid state lasers
LK - https://researchspace.csir.co.za
PY - 2020
SM - 1094-4087
T1 - Digital laser for on-demand intracavity selective excitation of second harmonic higher-order modes
TI - Digital laser for on-demand intracavity selective excitation of second harmonic higher-order modes
UR - http://hdl.handle.net/10204/11458
ER -
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en_ZA |