title: 39.1 μJ picosecond ultraviolet pulses at 355 nm with 1 MHz repeat rate.
abstract: Based on our reliable high-power picosecond laser source with high beam qualities, we designed a compact and efficient third harmonic generation scheme by cascading a frequency doubling and a sum frequency generation using LBO as the nonlinear material. A maximum output of 39.1 W with a repeat rate of 1 MHz at 355 nm was obtained, which implied a pulse energy of 39.1 μJ, which was the highest picosecond UV pulse energy with an all-solid-state setup so far. The total conversion efficiency from infrared to UV was up to 46%. And the output UV has excellent beam qualities with an M-square factor less than 1.1.
authors: Peng
authors: P
authors: Zhu
authors: Daijun
authors: D
authors: Li
authors: Qingyong
authors: Q
authors: Liu
authors: Jun
authors: J
authors: Chen
authors: Shaojun
authors: S
authors: Fu
authors: Peng
authors: P
authors: Shi
authors: Keming
authors: K
authors: Du
authors: Peter
authors: P
authors: Loosen