TY - JOUR
T1 - Generation of vortex array beams from a thin-slice solid-state laser with shaped wide-aperture laser-diode pumping
AU - Otsuka, Kenju
AU - Chu, Shu N.
PY - 2009/1/1
Y1 - 2009/1/1
N2 - We demonstrate vortex array-beam generations from a thin-slice, wide-aperture, solid-state laser with laser-diode end-pumping. Radial and rectangular vortex arrays were found to be formed in a controlled fashion with symmetric and asymmetric pump-beam profiles, respectively. Most of these vortices exhibited singlefrequency oscillations arising from a spontaneous process of transverse mode locking of degenerate or nearly degenerate modes assisted by the laser nonlinearity. Single-frequency rectangular array beams consisting of a large number of vortices, e.g., closely packed 25, 36, or 46 vortex pixels, were generated, originating from Ince-Gaussian modes excited by the asymmetric pumping.
AB - We demonstrate vortex array-beam generations from a thin-slice, wide-aperture, solid-state laser with laser-diode end-pumping. Radial and rectangular vortex arrays were found to be formed in a controlled fashion with symmetric and asymmetric pump-beam profiles, respectively. Most of these vortices exhibited singlefrequency oscillations arising from a spontaneous process of transverse mode locking of degenerate or nearly degenerate modes assisted by the laser nonlinearity. Single-frequency rectangular array beams consisting of a large number of vortices, e.g., closely packed 25, 36, or 46 vortex pixels, were generated, originating from Ince-Gaussian modes excited by the asymmetric pumping.
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U2 - 10.1364/OL.34.000010
DO - 10.1364/OL.34.000010
M3 - Article
C2 - 19109623
AN - SCOPUS:58149524808
SN - 0146-9592
VL - 34
SP - 10
EP - 12
JO - Optics Letters
JF - Optics Letters
IS - 1
ER -