Study of high-power diode-end-pumped Nd:YVO4 laser at 1.34 μm: Influence of Auger upconversion

Yung-Fu Chen*, L. J. Lee, T. M. Huang, C. L. Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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The influence of Nd3+ concentrations on the diode-pumped Nd:YVO4 operating in 1.34-μm laser is investigated. The concentration-dependent slope efficiencies are discussed from the Auger upconversion. The results indicate that the upconversion-induced population reduction in 1.34-μm laser is a strong increasing function of the Nd3+ concentration in the range of 0.5 to 2.0 at.%, whereas the fractional reduction in the 1.06-μm laser is not sensitive to the Nd3+ concentration in that range. Special care is necessary to minimize the negative influence of upconversion, especially at high threshold values typical for weak 1.3-1.4-μm Nd transitions.

Original languageEnglish
Pages (from-to)198-202
Number of pages5
JournalOptics Communications
Issue number4-6
StatePublished - 15 May 1999

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