No abstract

The stability condition of a resonator formed by a 90 degrees cone and mirror has been derived using ray tracing techniques. The result showed that this type of resonator is relatively insensitive to mirror misalignment. From this basis, the mirror misalignment tolerance was studied experimentally. Output energy and transverse mode characteristics vs. misalignment were measured, and the results show that this type of resonator does possess certain advantages over the two-mirror resonator.

No abstract

Wind speed data for 2010 at eight stations located in three coastal areas of Taiwan were used to fit three kinds of Weilbull distributions in this study. Bimodal Gamma-Weibull distribution is examined the best among three distributions for all wind speed data comparing three tests for goodness-of-fit. Key indicators for a bimodal distribution are the weighting parameter approaching 0.5, variation of peak speeds of monthly distribution and peak speed ratio. Topographical effect of high central mountains of Taiwan on offshore wind speeds at southern Taiwan is stronger than at northern Taiwan. It explains that the distribution of offshore wind speeds is bimodal at northern Taiwan and unimodal at southern Taiwan.