Spontaneous generation of vortex and coherent vector beams from a thin-slice c-cut Nd:GdVO4 laser with wide-aperture laser-diode end pumping: Application to highly sensitive rotational and translational Doppler velocimetry

Kenju Otsuka; Shu Chun Chu

doi:10.1088/1612-202X/aa741a

Spontaneous generation of vortex and coherent vector beams from a thin-slice c-cut Nd:GdVO₄ laser with wide-aperture laser-diode end pumping: Application to highly sensitive rotational and translational Doppler velocimetry

Kenju Otsuka, Shu Chun Chu

Department of Physics

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Selective excitation of Laguerre-Gauss modes (optical vortices: helical LG_0,2 and LG_0,1), reflecting their weak transverse cross-saturation of population inversions against a preceding higher-order Ince-Gauss (IG_0,2) or Hermite-Gauss (HG_2,1) mode, was observed in a thin-slice c-cut Nd:GdVO₄ laser with wide-aperture laser-diode end pumping. Single-frequency coherent vector beams were generated through the transverse mode locking of a pair of orthogonally polarized IG_2,0 and LG_0,2 or HG_2,1 and LG_0,1 modes. Highly sensitive self-mixing rotational and translational Doppler velocimetry is demonstrated by using vortex and coherent vector beams.

Original language	English
Article number	075002
Journal	Laser Physics Letters
Volume	14
Issue number	7
DOIs	https://doi.org/10.1088/1612-202X/aa741a
Publication status	Published - 2017 Jul

All Science Journal Classification (ASJC) codes

Instrumentation
Physics and Astronomy (miscellaneous)

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10.1088/1612-202X/aa741a

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title = "Spontaneous generation of vortex and coherent vector beams from a thin-slice c-cut Nd:GdVO4 laser with wide-aperture laser-diode end pumping: Application to highly sensitive rotational and translational Doppler velocimetry",

abstract = "Selective excitation of Laguerre-Gauss modes (optical vortices: helical LG0,2 and LG0,1), reflecting their weak transverse cross-saturation of population inversions against a preceding higher-order Ince-Gauss (IG0,2) or Hermite-Gauss (HG2,1) mode, was observed in a thin-slice c-cut Nd:GdVO4 laser with wide-aperture laser-diode end pumping. Single-frequency coherent vector beams were generated through the transverse mode locking of a pair of orthogonally polarized IG2,0 and LG0,2 or HG2,1 and LG0,1 modes. Highly sensitive self-mixing rotational and translational Doppler velocimetry is demonstrated by using vortex and coherent vector beams.",

author = "Kenju Otsuka and Chu, {Shu Chun}",

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Spontaneous generation of vortex and coherent vector beams from a thin-slice c-cut Nd:GdVO₄ laser with wide-aperture laser-diode end pumping: Application to highly sensitive rotational and translational Doppler velocimetry. / Otsuka, Kenju; Chu, Shu Chun.
In: Laser Physics Letters, Vol. 14, No. 7, 075002, 07.2017.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Spontaneous generation of vortex and coherent vector beams from a thin-slice c-cut Nd:GdVO4 laser with wide-aperture laser-diode end pumping

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AU - Otsuka, Kenju

AU - Chu, Shu Chun

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AB - Selective excitation of Laguerre-Gauss modes (optical vortices: helical LG0,2 and LG0,1), reflecting their weak transverse cross-saturation of population inversions against a preceding higher-order Ince-Gauss (IG0,2) or Hermite-Gauss (HG2,1) mode, was observed in a thin-slice c-cut Nd:GdVO4 laser with wide-aperture laser-diode end pumping. Single-frequency coherent vector beams were generated through the transverse mode locking of a pair of orthogonally polarized IG2,0 and LG0,2 or HG2,1 and LG0,1 modes. Highly sensitive self-mixing rotational and translational Doppler velocimetry is demonstrated by using vortex and coherent vector beams.

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