A diode-pumped discrete-element ring laser that can be end pumped simultaneously along two intersecting axes is described. The maximum power obtained was 493-mW single frequency at 1.06 microm. A demonstration of cw and Q-switched operations was performed for the fundamental and second harmonic, and a second-harmonic conversion efficiency of 43% was obtained. This ring laser is shown to incorporate significant advantages in terms of alignment and scalability.
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Scheps et al. (1992) studied this question.
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