Thin Nd:YAG slab laser pumped by lens duct coupled diode laser stacks |
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Authors: | K. Ranganathan P. Misra A.K. Nath |
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Affiliation: | (1) Solid State Laser Division, Raja Ramanna Centre for Advanced Technology, Indore, 452013, M.P., India |
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Abstract: | High power continuous wave operation of a diode face-pumped thin Nd:YAG slab laser is reported. A novel pumping geometry for a thin Nd:YAG slab using cylindrical lens duct coupled diode laser stacks is demonstrated. In a close-coupled resonator, a maximum laser output power of 260 W in multimode operation is obtained. This corresponds to a slope efficiency of 34% and an optical-to-optical efficiency of 27%, respectively. In high-brightness operation, a polarized laser output of 70 W has been obtained with a beam quality factor close to 4 in both directions. The polarization contrast ratio is >100. PACS 42.55.Xi; 42.60.Pk; 42.60.By |
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