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3.8 W of cw blue light generated by intracavity frequency doubling of a 946-nm Nd:YAG laser with LBO

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Abstract

Efficient cw intracavity frequency doubling of a diode-end-pumped Nd:YAG laser operating on 4 F 3/24 I 9/2 transitions at 946 nm has been demonstrated. A symmetrical cavity with two composite laser rods was designed, which divides the pump power between the two composite laser rods, allowing for greater power scalability. A 30-mm-long LiB3O5 (LBO) crystal, cut for critical type I phase matching at 57 °C, was used for the intracavity frequency doubling of the laser. A maximum output power of 3.8 W in the blue spectral range at 473 nm has been achieved at 39 W of pump power. The beam quality M2 value is 2.3 in both horizontal and vertical dimensions.

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Correspondence to Y. Chen.

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42.55.Xi; 42.65.Ky

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Chen, Y., Peng, H., Hou, W. et al. 3.8 W of cw blue light generated by intracavity frequency doubling of a 946-nm Nd:YAG laser with LBO. Appl. Phys. B 83, 241–243 (2006). https://doi.org/10.1007/s00340-006-2150-0

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  • DOI: https://doi.org/10.1007/s00340-006-2150-0

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