Journal
IEEE JOURNAL OF QUANTUM ELECTRONICS
Volume 43, Issue 5-6, Pages 385-390Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JQE.2007.893900
Keywords
diode pumping; high-power operation; Yb laser; Yb : YAl3(BO3)(4) crystal
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High-power continuous-wave laser operation near 1 mu m was demonstrated at room temperature with c-cut and a-cut Yb:YAI(3)(BO3)(4) crystals end-pumped by a fiber-coupled diode laser. Using a 2-mm-thick c-cut crystal, 10.6 W of output power was generated with an optical-to-optical efficiency of 65% and a slope efficiency of 72%. The complex polarization state of the generated laser radiation was also studied. With a 2-mm-thick a-cut crystal, or-polarized laser oscillation was obtained, producing a maximum output power of 8.1 W; the optical-to-optical and slope efficiencies were 56% and 61%, respectively. Complete absorption and emission cross section spectra of the Yb:YAI(3)(BO3)(4) crystal were also derived, revealing very strong anisotropy of the spectroscopic properties.
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