10Z20ER.1 Aluminum Mirror

The 10Z20ER.1 Broadband Aluminum Mirror is an excellent general purpose, broadband reflector. This 25.4 mm (1.0 inch) diameter mirror is made from a 6.0 mm thick Zerodur substrate. Zerodur, a glass-ceramic material, exhibits nominally zero thermal expansion which provides extra stability for applications requiring diffraction limited performance. The 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. The 10Z20ER.1 has an average reflectivity greater than 93% from 450-700 nm. This mirror has a λ/10 surface flatness and a 15-5 surface quality.

Specifications

Technical Specs

Wavelength Region

VIS
Wavelength Range

450-700 nm
Mirror Shape

Round
Diameter

25.4 mm
Mirror Size

Ø25.4 mm
Thickness

6.0 mm
Material

Zerodur^® or equivalent
Coating Type

Enhanced Aluminum
Coating Code

ER.1
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
Reflectivity

R_avg>93%, R_min>90 % @ 450-700 nm
Damage Threshold

0.5 J/cm² with 10 ns pulses at 532 nm, 20Hz
Diameter Tolerance

+0/-0.13 mm
Thickness Tolerance

±0.25 mm
Chamfers

0.25–0.76 mm face width
Chamfers Angle Tolerance

45° ±15°
Cleaning

See How to Clean Optics

Wavelength Region

VIS
Wavelength Range

450-700 nm
Mirror Shape

Round
Diameter

25.4 mm
Mirror Size

Ø25.4 mm
Thickness

6.0 mm
Material

Zerodur^® or equivalent
Coating Type

Enhanced Aluminum
Coating Code

ER.1
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
Reflectivity

R_avg>93%, R_min>90 % @ 450-700 nm
Damage Threshold

0.5 J/cm² with 10 ns pulses at 532 nm, 20Hz
Diameter Tolerance

+0/-0.13 mm
Thickness Tolerance

±0.25 mm
Chamfers

0.25–0.76 mm face width
Chamfers Angle Tolerance

45° ±15°
Cleaning

See How to Clean Optics

Resources & Downloads

Other

10Z20ER.1 RoHS Certificate (703.7 kB, PDF)
ER.1 Raw Data.xlsx (237.2 kB, XLSX)

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