High contrast non-linear femtosecond pulse filter

摘要

The filter (3) has a cubical crystal (C2) generating an electromagnetic field (E` 2) that produces constructive interferences with an electromagnetic field (E` 1) generated by a cubical crystal (C1). The crystal (C1) generates the field (E` 1) from an electromagnetic field (E). The crystal (C2) receives, in an input, the field (E` 1) converted by the crystal (C1) and the field (E) transmitted by the crystal (C1) without converting. An independent claim is also included for a laser pulse generator comprising a non linear optical filter.