Abstract
Second-harmonic generation (SHG) in poled high-water fused silica was found to be linearly dependent on the relative concentration of Ge E′ defect sites (<10−15 defect sites/cm3) for the highly pure UV-grade material. For commercial-grade material characterized by higher concentrations of Ge E′ defects sites, the SHG appeared to saturate at approximately 0.5 pm/V. No dependence of the SHG was found on the relative concentration of Ge E′ defects sites in poled commercial-grade low-water fused silica.
© 1995 Optical Society of America
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