Front surface dielectric mirrors ideal for use with red HeNe, orĀ  red diode lasers.

Specifications:

Wavelength range: 630 to 740nm.
Peak wavelength (MAX R): 694nm.
Efficiency: ~95% reflective at 635nm.
Dimensions: 0.69″ x 0.69″ x 0.23″ 17.5mm x 17.5mm x 6mm.