Edmund Optics , a supplier of optical components, has launched nonlinear crystals with very high laser damage thresholds (LIDT), and Techspec superpolished substrates, which feature extremely low surface roughness; both are ideal for high-power laser applications.
The non-linear crystals are made of β-barium borate (BBO) or lithium triborate (LBO) and feature anti-reflective (AR) treated surfaces with a surface quality of 20-10. Surface flatness specifications are λ/8 for BBO and λ/10 for LBO. With damage thresholds of up to 10 J/cm2 (at 1064 nm, 10 ns 10 Hz), these crystals are suitable for frequency conversion of Ti:sapphire and Yb-doped lasers.
Techspec superpoly substrates feature RMS surface roughness ≤1Å on both sides, making these window substrates highly superior for reduced dispersion or use with UV or high-power lasers. The low dispersion of these substrates also makes them ideal for high-quality AR or reflective treatments obtained by ion sputtering (IBS). Other applications for these superpoly windows include optical cavity spectroscopy, scatterometry and UV laser eye surgery.
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www.edmundoptics.fr