Journal
APPLIED PHYSICS B-LASERS AND OPTICS
Volume 100, Issue 4, Pages 755-758Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00340-010-4047-1
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Funding
- National Natural Science Foundation of China [10734080, 10574092]
- National Basic Research Program 973 of China [2006CB806000]
- Shanghai Leading Academic Discipline Project [B201]
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Non-collinear continuous frequency doubling with relatively high conversion efficiency is demonstrated in periodically-poled lithium niobate. It is shown that about 80% of the total second harmonic energy can be collected to one output channel by tuning incident angle. The fractional phase-matching condition is introduced to interpret the phenomenon. These results make it possible for direct power applications of continuous frequency doubling over the broad spectral range from the visible to the infrared without temperature or angle tuning.
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