Adaptable beam profiles from a dual-cavity Nd:YAG laser

Adaptable beam profiles from a dual-cavity Nd:YAG laser

We report a technique to tailor a laser beam profile from a donut to quasi-top-hat intensity distribution, directly from the laser, simply achieved by simultaneous excitation and control of the relative contributions of the fundamental (TEM00) and first-order Laguerre-Gaussian (LG01) transverse mode...

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Veröffentlicht in:Optics letters 2016-04, Vol.41 (8), p.1740-1743
Hauptverfasser: Kim, D J, Mackenzie, J I, Kim, J W
Format: Artikel
Sprache:eng
Schlagworte:
Acoustics
Beams (radiation)
Diffraction
Gain
Holes
Laser beams
Lasers, Solid-State
Modulators
Optical Phenomena
Pumps
Resultants
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container_title Optics letters
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creator Kim, D J
Mackenzie, J I
Kim, J W
description We report a technique to tailor a laser beam profile from a donut to quasi-top-hat intensity distribution, directly from the laser, simply achieved by simultaneous excitation and control of the relative contributions of the fundamental (TEM00) and first-order Laguerre-Gaussian (LG01) transverse modes. Exploiting a dual-cavity configuration with a single Nd:YAG gain element, adaptable continuous-wave laser beam profiles from the primary cavity could be obtained by varying the diffraction loss of an acousto-optic modulator in the secondary cavity. We investigate the resultant beam profiles as a function of pump power and the AOM diffraction loss, and discuss the prospects for tunable laser beams profiles.
doi_str_mv 10.1364/OL.41.001740
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source MEDLINE; Optica Publishing Group Journals
subjects Acoustics
Beams (radiation)
Diffraction
Gain
Holes
Laser beams
Lasers, Solid-State
Modulators
Optical Phenomena
Pumps
Resultants
title Adaptable beam profiles from a dual-cavity Nd:YAG laser
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