Cross-correlation frequency-resolved optical gating for mid-infrared femtosecond laser pulses by an AgGaGeS(4) crystal.
We introduce an AgGaGeS(4) crystal for sum-frequency generation in cross-correlation frequency-resolved optical gating (XFROG) to characterize mid-IR femtosecond laser pulses between the wavelengths of 3 microm and 11 microm. The performance of the AgGaGeS(4) crystal was examined by comparing it with a LiNbO(3) crystal, which has been frequently used in the near- to mid-IR region. We can obtain XFROG images by the AgGaGeS(4) crystal with efficiency 30 times greater than LiNbO(3) at the wavelength of 5 microm.
Tsubouchi
Masaaki
M
Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver,British Columbia V6T 1Z1, Canada.
Momose
Takamasa
T