19 August 2011 Theoretical study of diode-pumped Nd:YAG triple-frequency UV laser by LBO crystal
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Abstract
Based on the nonlinear three optical waves of coupling theory, the walk-off angle, effective nonlinear coefficients and the interaction length of wavelength of 1064nm and 532nm were calculated numerically under the condition of second class phase matching of the LBO crystals. In the phase matching range, the bigger the effective nonlinear coefficient and the smaller walk-off angle between 1064nm and 532nm beams, the higher frequency conversion efficiency. When the fundamental frequency light was an ideal Gaussian beam, the conversion efficiency improved with the crystal length increasing in the case of a particular power. And then, the conversion efficiency is limited by the fundamental frequency light was absorbed and the walk-off angle was increased with the crystal length increasing.
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Qin Dai, Yan-juan Liu, Ye-qui Li, Jun Yao, "Theoretical study of diode-pumped Nd:YAG triple-frequency UV laser by LBO crystal", Proc. SPIE 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, 81921F (19 August 2011); doi: 10.1117/12.899997; https://doi.org/10.1117/12.899997
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