High-power high-efficiency optically pumped semiconductor disk lasers in the green spectral region with a broad tuning range

摘要

Optically pumped semiconductor disk lasers with an infra-red fundamental emission at around 1050nm are presented. Design and characteristics of the devices are discussed and evaluated. A maximum output power of infra-red radiation of 18 W close to room temperature and rather high slope and differential quantum efficiencies are demonstrated. Utilizing intra-cavity second-harmonic generation in a folded resonator, green optical output powers exceeding 8 W are generated. A maximum total conversion efficiency of 22% and a relatively broad tuning range of 22 nm in the second-harmonic regime are achieved.