UHV Viewports

Calcium Fluoride (CaF2) is used optically as windows, prisms and lenses transmitting from the vacuum ultraviolet (VUV) into the infrared.  It is a physically and chemically stable optical material with good water and chemical resistance. Two qualities are manufactured, one for Visible and Infrared applications and the other specifically for Ultraviolet applications.  For Ultraviolet applications, these are grown from chemically pure powder. MPF Products, Inc. does not approve the use of ultrasonic cleaning for any viewport.  We ship our viewports UHV ready.  You may simply blow off the glass to remove any contaminants with clean, dry air.  For additional cleaning steps for particulates or contamination from other processes, please review our cleaning procedures at UHV Viewport Cleaning Notes. Bake-Out Ramp Rate: 20°C per Minute - Calcium Fluoride (CaF2) Transmission Chart

Crystal Quartz (SiO2) is typically used as an optical window in the 3-5 micron region but can also be used as an optical filter.  Crystal Quartz (SiO2) has a low density and a high thermal conductivity, making it an ideal material to be used for laser mirrors. Silicon is grown by two different forms.  One, is Czochralski (CZ), which contains some oxygen typically leading to an absorption band.  The other is Optical Quality Silicon.  This form is typically doped, and because it has a high refractive index, it must be anti-reflective coated to achieve a high optical transmission. MPF Products, Inc. does not approve the use of ultrasonic cleaning for any viewport.  We ship our viewports UHV ready.  You may simply blow off the glass to remove any contaminants with clean, dry air.  For additional cleaning steps for particulates, or contamination from other processes, please review our cleaning procedures at UHV Viewport Cleaning Notes. Bake-Out Ramp Rate: 20°C per Minute - Crystal Quartz (SiO2) Transmission Chart

Magnesium Fluoride (MgF2) is grown by vacuum Stockbarger technique in various diameters.  Magnesium Fluoride is a strong material and polishes very well.  Magnesium Fluoride is slightly birefringent and is normally supplied with the optical axis cut perpendicular to the window face.  Magnesium Fluoride is a water soluble material.  Magnesium Fluoride transmits well into the VUV region and is an excellent choice for Excimer laser applications.  Magnesium Fluoride is one of two materials that will transmit in the VUV 121nm (Lyman Alpha) range. MPF Products, Inc. does not approve the use of ultrasonic cleaning for any viewport.  We ship our viewports UHV ready.  You may simply blow off the glass to remove any contaminants with clean, dry air.  For additional cleaning steps for particulates or contamination from other processes, please review our cleaning procedures at UHV Viewport Cleaning Notes. Bake-Out Ramp Rate: 20°C per Minute - Magnesium Fluoride (MgF2) Transmission Chart

MPF Products Inc. produces UHV Re-Entrant Viewports.  These specific viewports are perfect for allowing you to introduce cameras or other customer specific tools into the vacuum chamber.  MPF can customize our UHV Re-Entrant Viewports to be customer specific in regards to length, size, window material, mounting material and specified coatings wavelengths when needed. MPF Products, Inc. does not approve the use of ultrasonic cleaning for any viewport.  We ship our viewports UHV ready.  You may simply blow off the glass to remove any contaminants with clean, dry air.  For additional cleaning steps for particulates or contamination from other processes, please review our cleaning procedures at UHV Viewport Cleaning Notes. Bake-Out Ramp Rate: 20°C per Minute

RF Viewports transmit RF or microwave power from a vacuum into an air filled or inert gas filled transmission line. An example of this would be a waveguide.  It is a resonant cavity designed to maximize RF (radio frequency) power transmission, with minimal loss over a desired frequency range. MPF Products, Inc. does not approve the use of ultrasonic cleaning for any viewport.  We ship our viewports UHV ready.  You may simply blow off the glass to remove any contaminants with clean, dry air.  For additional cleaning steps for particulates or contamination from other processes, please review our cleaning procedures at UHV Viewport Cleaning Notes. Bake-Out Ramp Rate: 20°C per Minute

The properties of Sapphire makes this material ideal for use in harsh environments.  It has a unique combination of excellent physical, chemical and optical properties that allow it to retain its composition at elevated temperatures.  This material will resist attack from acids and alkali up to 1000°C as well as Hydrofluoric Acid below 300°C.  This material is inherently birefringent and has a transmission range from UV to NIR. MPF Products, Inc. does not approve the use of ultrasonic cleaning for any viewport.  We ship our viewports UHV ready.  You may simply blow off the glass to remove any contaminants with clean, dry air.  For additional cleaning steps for particulates or contamination from other processes, please review our cleaning procedures at UHV Viewport Cleaning Notes. Bake-Out Ramp Rate: 20°C per Minute - UV Sapphire Transmission Chart   - DUV Sapphire Transmission Chart