eSource Optics offers a variety of High Reflectance broadband metallic Aluminum & Magnesium (Al & MgF2) VUV-UV mirror coatings with high reflectivity optimized  at specific VUV to UV wavelengths.   All eSource Optics broadband VUV-UV Al & MgF2 mirror coatings offer excellent reflectance properties at the specific VUV-UV wavelengths listed below, with high average broadband reflectance throughout the Visible to NIR.   High Reflectance broadband VUV-UV mirror coatings are specifically designed for use in a variety of VUV-UV instrument and research applications including VUV-UV-based analytical instrumentation, DUV spectrophotometers & Ellipsometers.  For the VUV to UV wavelength region, we supply % Reflectance curves with every Lot of mirrors supplied.  All eSource Optics VUV-UV Mirrors are measured on a Vacuum Spectrophotometer system capable of measuring VUV-UV reflectance as short as 120nm. The system is based on a calibrated Model VM-502 0.2 Meter Vacuum Monochromator with VUV enhanced 1200g/mm grating & Deuterium light source for very accurate VUV to UV  wavelength measurements. 
eSource Optics High Reflectance broadband VUV-UV mirror coatings offer superior reflectance properties as specified below, optimized for normal incidence.  All eSource Optics broadband VUV-UV mirror coatings are available as complete VUV-UV mirrors having our Analytical Quality Window substrate specifications as listed below, or on customer supplied substrates.
Broadband VUV-UV Mirror Coatings
Mirror Coating Product Number                               % Reflectance @ 0 degrees A.O.I.
                        |              ES #120               |                                                                                            78-83% R @ 121.6nm              |                                         |         
                    |              ES #160              |                                                                                            84-86% R @ 160.8nm              |                                         |         
                    |              ES #190              |                                                                                            >= 88% R @ 190-195nm              |                                         |         
                    |              ES #200              |                                                                                            >=88-90% R @ 200nm              |