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This study presents a diode-pumped cw triple-wavelength Nd:GdVO₄ laser system using an electro-optic periodically poled lithium niobate (PPLN) Bragg modulator. The PPLN consists of two cascaded sections, 20.3 μm and 25.7 μm, functioning as loss modulators for 1063 and 1342 nm at the same Bragg incident angle. When switching the dc voltages on PPLN and applying 25 W pump power, the output wavelength can be selected among 912, 1063, and 1342 nm with output power of 2, 5, and 1.4 W, respectively. The device is capable of triple-wavelength generation simultaneous when applied voltages are 180 (Λ = 20.3 μm) and -50 V (Λ = 25.7 μm) at a 25 W pump power. Gain competition induced power instability was also observed.
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Lin et al. (2012) studied this question.
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