Collinear phase matching of amplified colliding-pulse mode-locked (CPM) laser pulses at 620 ran in β-barium borate (BBO) for Type I parametric generation (PG) of femtosecond near infrared (ir) pulses is only possible in a narrow interval of angles between 20.3 and 20.8 degrees. This corresponds to a situation with small group velocity (GV) mismatch,1 which favors additional nonlinear processes due to the large intensity of the generated signal and idler fields.2

© 1991 Optical Society of America

PDF Article


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription