[21a-S622-1~12] 3.6 Ultrashort-pulse and high-intensity lasers

▲ [21a-S622-8] Carrier envelope phase stabilization using orthogonally polarized reference pulse

〇Yuxi FU¹, Eiji J. TAKAHASHI¹, Yuuki TAMARU¹, Katsumi MIDORIKAWA¹ (1.Attosecond Science Research Team, RIKEN Center for Advanced Photonics, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan)

Keywords:carrier envelope phase,high energy laser,low repetition rate

We propose and demonstrate a method to stabilize the carrier envelope phase (CEP) of a high-energy femtosecond laser which has a very low repetition rate. By employing a high-repetition-rate reference pulse which has an orthogonal polarization to characterize CEP noises, the CEP of a 10-Hz high-energy pulse is stabilized by feedback an error signal to control grating seperation of the stretcher. This method can be applied to stabilize the CEP of a high-power laser system which has extremely low repetition rate.