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Mounted UV Fused Silica Plano-Convex Lenses, V-Coated: 532/1064 nm
Thorlabs' UV Grade Fused Silica Plano-Convex lenses, which are available in Ø1/2" and Ø1" sizes in threaded mounts, are available here with a AR V-Coating centered at 1064/532 nm deposited on both surfaces. Each size is compatible with a multitude of Thorlabs lens mounts.
UV-grade fused silica offers high transmission in the deep UV and exhibits virtually no laser-induced fluorescence (as measured at 193 nm), making it an ideal choice for applications from the UV to the near IR. In addition, UV fused silica has better homogeneity and a lower coefficient of thermal expansion than N-BK7.
The V-coating is a multilayer, antireflective, dielectric, thin-film coating that achieves minimal reflectance over a narrow wavelength range. Reflectance rises rapidly on either side of this minimum, giving the reflectance curve a "V" shape (see Graphs tab for performance plots). When compared to broadband AR offerings, dielectric V-coats achieve lower reflectivity over a narrower bandwidth and incident angle.
With a reflectance of less than 0.25% at the specified coating wavelengths, these V-Coated lenses provide exceptional transmittance and are ideal for use with Nd:YAG (532/1064 nm) lasers, as well as applications where light is transmitted through complex optical systems.
Plano-convex lenses have positive focal lengths and are the most popular type of lens element. They are commonly used to focus a collimated incident beam; in such cases the collimated light source should be incident on the curved surface to minimize spherical aberrations. When image quality is not critical, plano-convex lenses may be a suitable alternative.
When deciding between a plano-convex lens and a bi-convex lens, both of which cause collimated incident light to converge, it is usually preferable to choose a plano-convex lens if the desired absolute magnification is either less than 0.2 or greater than 5. Between these two values, bi-convex lenses are generally prefered.
Thorlabs also offers unmounted versions of our UV-grade fused silica lenses, either uncoated or with an AR coating for one of the following wavelength ranges: 245 - 400 nm (UV), 350 - 700 nm (-A), 650 - 1050 nm (-B), 1050 - 1700 nm (-C), or 532/1064 nm (-YAG).
UV Fused Silica lens kits are also available. Please click here for information.
Below is the transmission curve for a 10 mm thick uncoated sample of UV fused silica when the incident light is normal to the surface. Please note that this is the measured transmission, including surface reflections.
532/1064 nm V-Coat Reflectance (AOI: 0 - 20°)
The plots below are enlarged views of the shaded regions in the plot above:
The lenses sold on this page are also available with broadband antireflective coatings, the reflectance traces of which are shown in the graph below.
These high-performance multilayer AR coatings have an average reflectance of less than 0.5% (per surface) across the specified wavelength ranges and provide good performance for angles of incidence (AOI) between 0° and 30° (0.5 NA). The plot shown below indicates the performance of the standard coatings in this family as a function of wavelength. Broadband coatings have a typical absorption of 0.25%, which is not shown in the reflectance plots.
Thorlabs offers a wide selection of optics optimized for use with Nd:YAG lasers. Please see below for more information.