Abstract

Carrier-envelope phase (CEP) stability is a key requirement for laser systems used in strong field nonlinear optics experiments. A prominent type of such systems is the optical parametric chirped pulse amplifier (OPCPA). OPCPAs operating around 800nm are usually seeded with pulses from Ti:sapphire oscillators or amplifiers, typically actively CEP stabilized using feedback or feedforward schemes. On the other hand, more convenient passive CEP stabilization by difference frequency generation (DFG) [1] is commonly used in OPCPAs operating at longer wavelengths [2]. We present an OPCPA front-end pumped by an Yb:KGW MOPA, delivering passively CEP-stabilized ultrabroadband visible-NIR pulses with 40μJ pulse energies and sub-70mrad short-term CEP noise. The design described here will be used in the SYLOS beamline of the ELI-ALPS laser center.

© 2015 IEEE