Several kinds of coatings are available. The broad bandwidth mirrors are enhanced aluminium coated  under a  layer of  Sio2  protective film.  The reflectance peaks at about 95%  and the wavelength range  from visible to FIR (0.35-12um).Furthermore the metallic coating is not angle-sensitive.The laser line mirrors are multilayer dielectric coated,  optimized for the preferred wavelength and incident angle.The central wavelength,incident angle and coating requirements should be specified at placing an order.These mirrors can be ordered with or without mountings.

Parameter	Standard
Material	BK7 or equivalent optical glass
Dimension Tolerance	+/-0.1mm
Clear Aperture	>80%
Flatness	L/2 per 25mm@632.8nm
Parallelism	<1 arc min.
Protective Bevel	0.2x45deg
Surface quality	60-40 polish on S1 surface Ground on S2 surface
Coating	- Dielectric HR Coating - Protected Aluminum Coating - Enhanced Aluminum Coating - Protected Silver Coating - Protected Au Coating - Custom Design