A record of 680-mW single-frequency red emission at 671.1 nm is demonstrated using a Nd:YVO4 ring laser intracavity frequency-doubled by a type-I critically phase-matched BiB3O6 crystal. Single-frequency tuning over Δλred ∼ 1.25 nm can be achieved with a thin etalon with reflectivity of 40%. At 1342.5 nm and with a t - 2% transmission output coupler, the laser provides an optimal 1.55 W of single-frequency power.
- Intracavity second-harmonic generation
- Nonlinear optics
- Solid-state ring lasers
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering