40mm Diameter, 633nm V-Coat, λ/4 N-BK7 Window

Clear Aperture (%):

Coating:

Laser V-Coat (633nm)

Coating Specification:

R_abs <0.25% @ 633nm

Diameter (mm):

40.00 +0.00/-0.25

Thickness (mm):

4.00

Design Wavelength DWL (nm):

633

Parallelism (arcmin):

Substrate:

N-BK7

Surface Flatness:

λ/4

Surface Quality:

60-40

Thickness Tolerance (mm):

±0.20

Type:

Laser Line Window

Young's Modulus (GPa):

Knoop Hardness (GPa):

610

Coefficient of Thermal Expansion CTE (10^-6/°C):

7.1

Density (g/cm³):

2.51

Index of Refraction n_d:

1.516

Poisson's Ratio:

0.206

Abbe Number (v_d):

64.17

Regulatory Compliance

RoHS 2015:

Compliant

Reach 209:

Compliant

Product Family Description

<0.25% Reflection at Design Wavelength
Coatings Available for HeNe, Diode, and Nd:YAG Laser Sources
Precision N-BK7 Substrate
Also Available Uncoated, MgF₂ Coated and VIS 0° Coated

TECHSPEC® λ/4 N-BK7 Laser Line Windows are ideally suited for industrial and low power laser applications. The high tolerance design yields minimal beam distortion and scatter. Anti-reflection coatings provide <0.25% reflection at the coating's design wavelengths.

40mm Diameter, 633nm V-Coat, λ/4 N-BK7 Window

Regulatory Compliance

Product Family Description

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