Name: 50 x 50mm, 4mm Thick NIR II Coated, 1λ Fused Silica Window
Brand: TECHSPEC
SKU: 39-304
Price: €140,00

50 x 50mm, 4mm Thick NIR II Coated, 1λ Fused Silica Window

Abbe Number (v_d):

67.8

Bevel:

Protective as needed

Clear Aperture (%):

Clear Aperture CA (mm):

45.00 x 45.00

Dimensions (mm):

50.00 x 50.00

Thickness (mm):

4.00 ±0.38

Coating:

NIR II (750-1550nm)

Coating Specification:

R_abs ≤1.5% @ 750 - 800nm
R_abs ≤1.0% @ 800 - 1550nm
R_avg ≤0.7% @ 750 - 1550nm

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

0.52 (+5 to +35°C)
0.57 (0 to +200°C)
0.48 (-100 to +200°C)

Density (g/cm³):

2.20

Edges:

Fine Ground

Index of Refraction n_d:

1.458

Knoop Hardness (kg/mm²):

522

Parallelism (arcmin):

Poisson's Ratio:

0.16

Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More

Fused Silica (Corning 7980)

Surface Flatness (P-V):

1λ

Surface Quality:

60-40

Type:

Protective Window

Typical Energy Density Limit:

8 J/cm² @ 1064nm, 10ns

Wavelength Range (nm):

750 - 1550

Young's Modulus (GPa):

Length (mm):

50.00

Width (mm):

50.00

Type of Window:

Glass

8 J/cm² @ 1064nm, 10ns

Regulatory Compliance

RoHS 2015:

Compliant

Reach 224:

Compliant

Certificate of Conformance:

View

Product Family Description

Available Uncoated or with Broadband Anti-Reflection Coatings
Ideal for Cost Sensitive Broadband Applications
Sizes Ranging from 5mm to 100mm Diameter
λ/4 or λ/10 UV Fused Silica Windows Also Available

TECHSPEC® 1λ UV Fused Silica Windows are precision manufactured using UV-grade synthetic fused silica. In addition to superior transmission, the synthetic fused silica of these optical windows exhibit higher thermal properties, exceptional purity, and excellent environmental durability for demanding applications.

Note: New additions to this product family may be specified with a transmitted wavefront distortion (TWD) specification instead of a surface flatness. For more information on the difference between these two specifications, see our application note on Understanding Optical Windows.

UV FS Transmission Curve

Title	Type	Stock Number	Price	Buy
60mm sq - Rectangular Bar Clamp	Fixed	#54-995	€116,00 Qty 10+ €104,40 Request Quote	In Stock ×
40mm Sq., Fixed Filter Holder	Fixed	#54-997	€86,00 Qty 10+ €77,80 Request Quote	In Stock ×
50/50.8mm Sq. Kinematic Mount, 2 Screws	Adjustable - Tip-Tilt	#58-858	€114,00 Qty 5+ €102,60 Request Quote	3-4 days ×
50/50.8mm Sq. Kinematic Mount, 3 Screws	Adjustable - Tip-Tilt	#58-861	€126,00 Qty 5+ €113,40 Request Quote	In Stock ×