Designed to meet the demanding requirements of ultrafast laser applications, these plano-convex lenses feature an AR coating optimized for ultrashort pulses applied to our standard fused silica lenses.
- UV-grade fused silica
- ≤λ/8 surface irregularity, 20-10 scratch-dig
- Ultrafast-optimized broadband AR coating
- Designed for full bandwidth of Spectra-Physics InSight® laser
UV Fused Silica for UV, Laserline & Broadband Applications
UV Grade Fused Silica is synthetic amorphous silicon dioxide of extremely high purity providing maximum transmission from 195 to 2100 nm. This non-crystalline, colorless silica glass combines a very low thermal expansion coefficient with good optical qualities, and excellent transmittance in the ultraviolet region. Transmission and homogeneity exceed those of crystalline quartz without the problems of orientation and temperature instability inherent in the crystalline form. It will not fluoresce under UV light and is resistant to radiation. For high-energy applications, the extreme purity of fused silica eliminates microscopic defect sites that could lead to laser damage.
Plano-Convex Lens Shape for Focusing Light
Plano-Convex lenses are the best choice for focusing parallel rays of light to a single point. They can be used to focus, collect and collimate light. The asymmetry of this lens shape minimizes spherical aberration in situations where the object and image are located at unequal distance from the lens. The optimum case is where the object is placed at infinity with parallel rays entering lens and the final image is a focused point.
High Quality Precision Lens Surfaces
Our ultrafast plano-convex lens UV fused silica substrates are polished to tight tolerances minimizing wavefront distortion. Tight surface quality tolerances minimize scatter and unwanted diffraction effects. These lenses have a 20-10 scratch-dig surface quality, and a λ/8 surface irregularity.
Typical performance of the AR.UF coating compared to uncoated lens and Newport standard AR coatings. Uncoated or Ultrafast Antireflection Coating
Our broadband ultrafast antireflection coating is optimized specifically for broadband Ultrafast laser wavelengths to provide low GVD performance.
Low Group Velocity Dispersion Performance
The graphs above show the GVD values through a wavelength range of 600 to 1450 nm for a coated lens and an uncoated lens. The graphs show that the AR coating has very little to no impact on the overall GVD performance of the lens. We chose the fused silica lens with the thickest center thickness to evaluate. The theoretical values for GVD contribution from the coating was added to the bulk GVD of fused silica to produce the graph on the left. The graph on the right is simply the GVD of bulk fused silica for the SPX016.
Standardized Focal Lengths
Standard effective focal lengths provide a systematic approach allowing for lenses of different sizes to be interchanged without requiring other changes to your optical system.