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Noncritical Phase Matching Yields 236-nm Radiation

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Breck Hitz

Investigators at Aculight Corp. in Bothell, Wash., have employed noncritical phase matching to obtain 236-nm radiation by twice frequency-doubling a Q-switched, 946-nm Nd:YAG laser. They generated 43 mW of average ultraviolet power inside a cesium lithium borate (CLBO) crystal from 190 mW of blue power, for a second-harmonic conversion efficiency of 22.6 percent. In general phase matching, called critical phase matching, the momentum vectors of the ordinary, fundamental wave and of the extraordinary, second-harmonic wave propagate through a nonlinear crystal in a direction such that both...Read full article

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    Published: September 2003
    236-nm radiation946-nm Nd:YAG laserdiode lasersResearch & TechnologyTech Pulsetwice frequency-doubling a Q-switchedLasers

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