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The experimental set up. OC—5%, GR—1200 grooves/mm diffraction grating, AC—autocorrelator, OSA—optical spectrum analyzer, Mono–grating monochromator, PM —power meter, BS—beamsplitters, F—edge filter, and P—dispersing prism.
Output spectra for the OPO with (solid line) and without (dashed line) wavelength and bandwidth control using diffraction grating. The period section of the PPSLT crystal was pumped at while the crystal temperature was kept at .
Left scale shows signal and idler beam power output (both solid circles) vs pump power at . Right scale corresponds to pump beam depletion data (open circles) in percent with trend-line shown in solid.
The experimental temperature tuning data (solid circles) for two different pump wavelengths and QPM period values. Solid line represents calculated curves using dispersion and refractive index temperature relations given in Ref. 12 [note that the wavelength scale in part (a) is broken].
Typical pulse spectra [(a)–(c)] for the OPO at different wavelengths and signal pulse intensity autocorrelation (d) at around 1140 nm.
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