Abstract
We introduce an crystal for sum-frequency generation in cross-correlation frequency-resolved optical gating (XFROG) to characterize mid-IR femtosecond laser pulses between the wavelengths of and . The performance of the crystal was examined by comparing it with a crystal, which has been frequently used in the near- to mid-IR region. We can obtain XFROG images by the crystal with efficiency 30 times greater than at the wavelength of .
© 2009 Optical Society of America
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