Dielectric Mirror, Broadband, Zerodur, 101.6 mm, 488-694 nm

High-Performance Zerodur Dielectric Mirrors

The 40Z20BD.1 Broadband Dielectric Mirror is an extremely versatile mirror for laboratory applications and highly efficient over a broad wavelength range. This 4 inch (101.6 mm) diameter mirror is made from a 17.7 mm thick Zerodur substrate. Zerodur is a glass-ceramic material where thermal expansion is nominally zero. This extra stability can be critical for applications requiring diffraction limited performance. The BD-1 coating is extremely durable and will withstand repeated cleaning. This mirror has a λ/10 surface flatness and a 20-10 surface quality.

Specifications

Technical Specs

Wavelength Region
VIS
Wavelength Range
488-694 nm
Mirror Shape
Round
Diameter
101.6 mm
Mirror Size
Ø101.6 mm
Thickness
17.7 mm
Material
Zerodur^® or equivalent
Coating Type
Broadband Dielectric
Coating Code
BD.1
Surface Quality
20-10 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
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
101.6 mm
Mirror Size
Ø101.6 mm
Thickness
17.7 mm
Material
Zerodur^® or equivalent
Coating Type
Broadband Dielectric
Coating Code
BD.1
Surface Quality
20-10 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
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

Other

40Z20BD.1 RoHS Certificate(263.3 kB, PDF)
40Z20BD.1_ROHS2-2021.pdf(281.4 kB, PDF)
BD.1 Raw Data.xlsx(89.2 kB, XLSX)

Related Products

Similar

	Compare	Description	Compatibility	Drawings, CAD & Specs	Avail.	Price
		Dielectric Mirror, Broadband, 101.6 mm, 488-694 nm	UNIVERSAL				Learn More
		Dielectric Mirror, Broadband, Zerodur, 101.6 mm, 488-694 nm	UNIVERSAL				Learn More

Compatible

Description	Compatibility
Gimbal Optic Mount, Low-distortion Axial Clamping, 4.0 in. Diameter	UNIVERSAL	Learn More
Gimbal Optical Mount, 4.0 in., (2) BD Differential Micrometers	UNIVERSAL	Learn More
Mirror Mount, ULTIMA<sup>®</sup>, Center, 4.0 in. Diameter, No Actuators	UNIVERSAL	Learn More
Mirror Mount, ULTIMA<sup>®</sup>, Center, 4.0 in., 2 Locking Knob Adjustment	UNIVERSAL	Learn More
Mirror Mount, ULTIMA<sup>®</sup>, Center, 4.0 in., 3 Locking Knob Adjustment	UNIVERSAL	Learn More

Need help?

Contact an Applications Specialist by sending us an email