High-power continuous wave green beam generation by use of simple linear cavity with side-pumped module

Zhang, Y.P.; Zhao, Xiao‐Qi; Zhang, H.Y.; Meng, Lingzhuang; Li, L.; Li, X.F.; Wang, Peisheng; Yao, J.Q

doi:10.1016/j.optcom.2010.07.075

Cited by 1 publication

(1 citation statement)

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“…Due to the nonlinear coupling between modes in the SHG, the crystal leads to irregular fluctuations in the laser output, which is amplified by a Q factor of the laser cavity due to the presence of the amplifying laser [9], also known as the green problem. This irregular behavior has been studied in detail and attributed to the destabilization of the relaxation of the oscillations, which has always been present in this type of lasers due to the nonlinear coupling of the longitudinal modes [10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

High Efficiency and High Stability for SHG in a Nd : YVO4 Laser with a KTP Intracavity and Q-switching through Harmonic Modulation

Afanador-Delgado¹,

García-López²,

Jaimes-Reátegui³

et al. 2023

Preprint

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In this paper, the stabilization and high efficiency of an unstable Second Harmonic Generation (SHG) of a Nd : YVO4 laser with a KTP intracavity is carried out by using a passive Q-switching crystal and a parametric modulation method (harmonic modulation) is shown. The harmonic modulation was defined as um(t) = Amsin(2π fmt), with modulation amplitude as Am(Vpp), and modulation frequency as fm(Hz), applied to the pumping of the Nd : YVO4 -KTP laser to control the amplitude and frequency of the emission, thus stabilizing the dynamic states of this laser. The promising application of this green light source is materialized when such light is necessary for high-density optics, such as in the treatment materials industry or in some aesthetic applications.

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