Third-harmonic generation of an alexandrite laser in β-BaB2O4

Imai, Shinichi; Yamada, Toshitaka; Fujimori, Yasutomo; Ishikawa, Ken
March 1989
Applied Physics Letters;3/27/1989, Vol. 54 Issue 13, p1206
Academic Journal
We report the first cascading third-harmonic generation by light from an alexandrite laser in β-BaB2O4. Ultraviolet (UV) light was generated by mixing the fundamental laser light with the second-harmonic light. The calculated effective nonlinear constant for type I mixing is nearly three times larger than that for type II. Using type I mixing we demonstrated UV light generation in the wavelength region 244–259 nm with 24% mixing efficiency at maximum.


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