Abstract
Producing femtosecond-laser-written waveguides in nonlinear crystals has the potential to create novel and high-efficiency frequency conversion devices. Recent studies in lithium niobate (LN) have demonstrated tight confinement of a pump beam along the entire length of a crystal and this can be used to achieve very efficient (0.5%/W) birefringently-phasematched second harmonic generation (SHG) at 1064mn [1].
© 2007 IEEE
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