Borofloat 33 Broadband Metallic Mirrors

Broadband Metallic Mirrors

Broadband metallic mirrors are excellent general purpose, broadband reflectors covering the UV, visible, and IR. The Borofloat® 33 substrate offers low thermal expansion and is an excellent choice for most applications.



Models

Broadband Metallic Mirror, 12.7 mm, λ/10, 250-600 nm

05D20AL.2

Broadband Metallic Mirror, 12.7 mm, λ/10, 450-700 nm

05D20ER.1
  • Excellent general purpose broadband reflectors
  • Borofloat® 33 substrates
  • Broader bandwidth and less expensive than dielectric coatings
  • Four metallic coatings covering the UV to IR bands

 

Features

Enhanced Aluminum UV Coating

Our AL.2 UV enhanced aluminum coating is a durable, broadband UV reflector with average reflectivity greater than 90% from 250 – 600 nm. The aluminum film is overcoated with UV transparent magnesium fluoride to prevent oxidation of the metal.

 

 

 
 

 

 
 

Enhanced Aluminum VIS-NIR Coating

Our ER.1 enhanced aluminum coating may be used wherever a broadband visible and near infrared reflector is needed. A multilayer dielectric stack deposited over the aluminum film boosts reflectance and improves the durability of the coating. Average reflectivity is greater than 93% from 450-700 nm.

 

Protected Silver VIS-IR Coating

Our ER.2 protected silver coating is composed of a low emissivity silver film fully encapsulated by a multilayer dielectric stack to prevent oxidation. This coating has excellent broadband reflectivity in the IR, while maintaining very good performance in the visible and near IR. Average reflectivity is greater than 96% from 480 – 1100 nm and greater than 98.5% from 1.1 – 20 µm. This silver mirror is a favorite for Ultrafast scientists who want an inexpensive option. Newport has performed a theoretical analysis of the expected group velocity dispersion over wavelength. Above is a theoretical rendition of the expected GDD performance of the ER.2 coating.

 

 

 
 

 

 
 

Protected Gold NIR-IR Coating

Our ER.4 protected gold coating is ideal for applications requiring broadband reflectance in the near IR to the far IR. A multilayer dielectric overcoat provides protection to the gold from the environment. Average reflectivity is greater than 96% from 650 – 1700 nm and greater than 98% from 1.7 – 2.0 µm.

 

Borofloat® 33 Substrates

Borofloat® 33 is a high quality borosilicate glass that offers low thermal expansion, and high thermal shock resistance making it ideal for a wide-range of optical mirror applications.