Sorry, this product is no longer offered for sale. It was discontinued on Jun 11, 2025

Dielectric Mirror, 12.7 mm, λ/10, 441.6 nm Laser Line

The 05D20DM.6 Laser Line Dielectric mirror is a highly efficient reflector optimized for the 441.6 nm wavelength. This 1/2 inch (12.7 mm) diameter mirror is made from a 3.1 mm thick Borofloat® 33 substrate. Borofloat has low thermal expansion and is an excellent substrate for most applications. The DM.6 coating is designed for use with HeCd lasers and has a center wavelength of 441.6 nm. The coating achieves greater than 99% reflectance, from 0–45° angle of incidence, for any polarization. This multilayer dielectric coating is extremely durable, making it resistant to damage from repeated cleaning. This mirror has a λ/10 surface flatness and a 15-5 surface quality.

Specifications

Technical Specs

Wavelength Region
VIS
Wavelength Range
441.6 nm
Mirror Shape
Round
Diameter
12.7 mm
Material
Borofloat® 33
Coating Type
Laser Line Dielectric
Coating Code
DM.6
Reflectivity
R_s, R_p>99% @ 441.6 nm
Surface Quality
15-5 scratch-dig
Surface Flatness
λ/10 at 632.8 nm

Angle of Incidence
0-45°
Clear Aperture
≥central 80% of diameter
Back Surface
Ground
Thickness
3.1 mm
Thickness Tolerance
±0.25 mm
Diameter Tolerance
+0/-0.13 mm
Chamfers
0.25–0.76 mm face width
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics
Damage Threshold
500 W/cm2 CW, 1 J/cm2 for 10 nsec pulses

Wavelength Region
VIS
Wavelength Range
441.6 nm
Mirror Shape
Round
Diameter
12.7 mm
Material
Borofloat® 33
Coating Type
Laser Line Dielectric
Coating Code
DM.6
Reflectivity
R_s, R_p>99% @ 441.6 nm
Surface Quality
15-5 scratch-dig
Surface Flatness
λ/10 at 632.8 nm

Angle of Incidence
0-45°
Clear Aperture
≥central 80% of diameter
Back Surface
Ground
Thickness
3.1 mm
Thickness Tolerance
±0.25 mm
Diameter Tolerance
+0/-0.13 mm
Chamfers
0.25–0.76 mm face width
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics
Damage Threshold
500 W/cm2 CW, 1 J/cm2 for 10 nsec pulses

Resources & Downloads

3D Product Models

Other

05D20DM.6 RoHS Certificate(703.8 kB, PDF)
DM.6 Raw Data.xlsx(50.7 kB, XLSX)

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Compatible

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