Lithium triborate (LiB3O5, LBO) crystal

opticallaser

Lithium triborate (LBO) nonlinear crystal is one of the most used crystal for harmonics generation for short and long pulse applications. Due to it’s relatively small walkoff angle long crystals could be used what allows to achieve high conversion efficiency. A special case of LBO crystal application is a non-critical phase matching (NCPM) for harmonics generation. Having the crystal cut for NCPM and keeping the crystal at specific temperature, the walkoff angle is almost zero, hence it allows to have a very long crystal and achieve outstanding conversion efficiency. The LBO crystal is mostly used to generate second and third harmonics of neudymium based lasers like Nd:YAG, Nd:YVO4. Another important application of the LBO crystal is frequency conversion in optical parametric oscillators (OPO). • Material : LiB3O5 • Dimensions tolerance : +/- 0.1 mm • Surface quality : 10-5 S-D • Surface flatness : λ/10 @ 633 nm • Parallelism error : < 20 arcsec • Coatings : AR/AR *standard specifications