Optical parametric chirped-pulse amplification (OPCPA) is promising for the amplification of extremely short pulsesfrom a few micro-Joules up to more than hundreds of Joules of energy with multi-PW output power. In this paper, wepresent brief review on broadband optical parametric amplification with both numerical and experimentalinvestigations. It is shown that OPCPA technique can be a very competitive candidate for the next generation ultrashort, ultra-intense lasers in addition to its potenti
