Dielectric Mirror, Broadband, 76.2 mm, λ/10, 488-694 nm

Standard Borofloat 33 Dielectric Mirrors

The 30D20BD.1 Broadband Dielectric Mirror is an extremely versatile mirror for laboratory applications and highly efficient over a broad wavelength range. This 3 inch (76.2 mm) diameter mirror is made from a 14.7 mm thick Borofloat® 33 substrate. Borofloat® 33 has low thermal expansion and is an excellent substrate for most applications. The BD-1 coating is extremely durable and will withstand repeated cleaning. This mirror has a λ/10 surface flatness and a 15-5 surface quality.

Borofloat® 33 Substrates

Borofloat 33 is a high quality borosilicate glass that offers low thermal expansion and high thermal shock resistance. Its material properties and moderate cost make Borofloat 33 an ideal substrate for general purpose applications. For more information, please see our Optical Materials technical note.

Visible Broadband Dielectric Coating

Our BD.1 visible broadband dielectric coating reflects all visible laser lines in the range of 488 to 694 nm with greater than 99% efficiency for s-polarization and 98% for p-polarization at 0 - 45° angle of incidence.

Specifications

Technical Specs

Wavelength Region
VIS
Wavelength Range
488-694 nm
Mirror Shape
Round
Diameter
76.2 mm
Mirror Size
Ø76.2 mm
Thickness
14.7 mm
Material
Borofloat® 33
Coating Type
Broadband Dielectric
Coating Code
BD.1
Surface Quality
15-5 scratch-dig
Surface Flatness
λ/10 at 632.8 nm
Substrate Number
30D20

Angle of Incidence
0-45°
Clear Aperture
≥central 80% of diameter
Back Surface
Ground
Reflectivity
Rs (avg)>99%, Rp (ave)>98% @ 488-694 nm
Damage Threshold
500 W/cm² CW, 3 J/cm², 10 ns pulses, 10 Hz, at 532 nm
Diameter Tolerance
+0/-0.13 mm
Thickness Tolerance
±0.25 mm
Chamfers
0.38–1.14 mm face width
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics

Wavelength Region
VIS
Wavelength Range
488-694 nm
Mirror Shape
Round
Diameter
76.2 mm
Mirror Size
Ø76.2 mm
Thickness
14.7 mm
Material
Borofloat® 33
Coating Type
Broadband Dielectric
Coating Code
BD.1
Surface Quality
15-5 scratch-dig
Surface Flatness
λ/10 at 632.8 nm
Substrate Number
30D20

Angle of Incidence
0-45°
Clear Aperture
≥central 80% of diameter
Back Surface
Ground
Reflectivity
Rs (avg)>99%, Rp (ave)>98% @ 488-694 nm
Damage Threshold
500 W/cm² CW, 3 J/cm², 10 ns pulses, 10 Hz, at 532 nm
Diameter Tolerance
+0/-0.13 mm
Thickness Tolerance
±0.25 mm
Chamfers
0.38–1.14 mm face width
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics

Resources & Downloads

3D Product Models

Download CAD Files

Other

30D20BD.1 RoHS Certificate(707.3 kB, PDF)
BD.1 Raw Data.xlsx(89.2 kB, XLSX)

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