BERECZKI, ALLANLOPEZ, MARCIO A.P.A.WETTER, NIKLAUS U.2018-08-172018-08-172018BERECZKI, ALLAN; LOPEZ, MARCIO A.P.A.; WETTER, NIKLAUS U. Dynamically stable Nd:YAG resonators with beam quality beyond the birefringence limit and pumping of a singly resonant optical parametric oscillator. <b>Optics Letters</b>, v. 43, n. 4, p. 695-698, 2018. DOI: <a href="https://dx.doi.org/10.1364/OL.43.000695">10.1364/OL.43.000695</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/29070.0146-9592http://repositorio.ipen.br/handle/123456789/29070A simple, reliable, linearly polarized laser source with very high beam quality is demonstrated using standard diode-side-pumped Nd:YAG modules. The laser produced 30 W of output power with beam quality factor 𝑀2<1.15 over the entire range of input powers and beam quality of 1.02 at the laser operation point. This is, to our knowledge, the highest beam quality for a dynamically stable high-power laser that uses an optically isotropic crystal. The laser was used as a pump source for an optical parametric oscillator based on a periodically poled lithium niobate, producing wavelength in the 1.5–3.8 μm range.695-698openAccesslasersresonatorsdiode-pumped solid state lasersneodymium lasersbeamsquality factorlithiumniobatesoptical systemsparametric oscillatorsoptical equipmentlaser pumpingArtigo de periódico44310.1364/OL.43.000695https://orcid.org/0000-0002-9379-953083.6888.00