Dynamics of a Q-switched Nd:YVO4/Cr:YAG laser under periodic modulation

Villafaña-Rauda, Edgar; Chiu, Roger; Mora-González, Miguel; Casillas-Rodríguez, Francisco J.; Medel‐Ruíz, C.I.; Sevilla-Escoboza, R.

doi:10.1016/j.rinp.2018.12.050

Cited by 6 publications

(2 citation statements)

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“…where I 0 is the initial current parameter, and u m corresponds to the current obtained by the use of an Operational Amplifier (OA) that sums the signal u m (t) = A m sin(2π f m t) that comes from the AFG as external harmonic modulation. In order to reach the desired control, the modulation signal, with a suitable gain A m and modulation frequency f m able to eliminate coexisting states, must be defined [11,12]. Using the same arrangement shown in Figure 1, it is possible to separate the green (532 nm) and infrared (1064 nm) emissions through the use of beam splitters (BS1 and BS2) at the output of the laser; then, we characterize the behavior of the laser when applying the modulation.…”

Section: Methodsmentioning

confidence: 99%

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

et al. 2023

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In this paper, the stabilization and high efficiency of an unstable Second Harmonic Generation (SHG) of an Nd:YVO4 laser with a KTP intracavity is demonstrated. By using a passive Q-switching crystal (Cr4+:YAG) and a parametric modulation method (harmonic modulation), the stabilization of the laser is reached. An harmonic modulation was applied to the pumping of the Nd:YVO4-KTP laser to control the amplitude and frequency of the laser emission. The results were characterized by using power spectra analysis, optical spectrum, bifurcation diagrams, and temporal series of the laser intensity. 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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Section: Methodsmentioning

confidence: 99%

“…One of them is the use of external modulation, where low emission power is achieved by using nonlinear waves for SHG. The stabilization of Nd:YVO 4 laser pulses with passive Q-switching has been studied [12,13]. This solution provides high conversion efficiency, and high power can be achieved by using flat waves [14].…”

Section: Introductionmentioning

confidence: 99%