Relaxing greatly the limit of thickness of SHG crystal using type I and colinear phase matching

In this paper, the correlation measurement condition and the relative error are derived. The results show that both are dependent upon the factor (1/g1-1/g2)1, where g1 and g2 are respectively the group velocities of two correlation fundamental pulses, and 1 is the crystal length. It is clear that the limit on thickness of SHG crystal is greatly relaxed as long as type I and colinear matching et fully realized.© (1996) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.