title: CW dual-frequency MOPA laser with frequency separation of 45 GHz.
abstract: A CW dual-frequency master oscillator power amplifier (MOPA) laser system with dozens of gigahertz (GHz) frequency separation is presented. The MOPA system consists of a monolithic microchip seed laser and a double-end pumped traveling wave power amplifier. The short length of seed laser cavity guarantees the seed signal with a large frequency separation (above 53 GHz) but low output power (below 247.8 mW). By adding a long and low-doped active medium laser amplifier stage, a significant increase in laser power and an improvement in beam quality are obtained. After fine temperature tuning of seed laser cavity for "spectra matching", a 2.40 W dual-frequency laser signal with 45 GHz frequency separation is achieved.
authors.forename: Miao
authors.initials: M
authors.lastname: Hu
authors.forename: Yaoyuan
authors.initials: Y
authors.lastname: Zheng
authors.forename: Ju
authors.initials: J
authors.lastname: Cai
authors.forename: Guiju
authors.initials: G
authors.lastname: Zhang
authors.forename: Qiliang
authors.initials: Q
authors.lastname: Li
authors.forename: Xuefang
authors.initials: X
authors.lastname: Zhou
authors.forename: Yizhen
authors.initials: Y
authors.lastname: Wei
authors.forename: Yang
authors.initials: Y
authors.lastname: Lu