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Normalized SHG efficiency (a) vs FF wavelength and (b) temperature for an input power of 0.7 mW; (c) parabolic trend of the generated SH vs FF input power at the QPM resonant wavelength. The solid lines are from the model; the dashed lines connecting data points are guides to the eye.
Set-up for BSHG measurements. HWP stands for half wave plate and OSA for optical spectrum analyzer. Additional filters are not shown.
(a) Normalized BSHG conversion efficiency vs FF wavelength for 29th and 30th QPM orders: data (circles) are compared with the predicted tuning for effective QPM lengths of 0.5 mm (solid lines) and 3 mm (dashed lines). (b) Calculated normalized conversion efficiency vs duty-cycle for 29th (solid line) and 30th (dashed line) at their respective resonant wavelengths.
(a) Measured (circles) and calculated (solid line) BSH output power vs FF excitation for the 30th resonant order. (b) Normalized conversion efficiency for the 30th BSHG order vs temperature: the input FF wavelength is 947.053 nm; the inset details a comparison between experimental data (circles) and the calculated resonant FF wavelength shift vs temperature (solid line).
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