50.8mm Dia., 6mm Thick, 30' Wedge, ISP Optics Germanium (Ge) Wedged Window

Name: 50.8mm Dia., 6mm Thick, 30' Wedge, ISP Optics Germanium (Ge) Wedged Window | GE-WW-50-6
Brand: ISP Optics
SKU: 16-811
Price: A$1,680.00 AUD

50.8mm Dia., 6mm Thick, 30' Wedge, ISP Optics Germanium (Ge) Wedged Window | GE-WW-50-6

Germanium (Ge) Wedged Windows

Stock #16-811 2 In Stock

- +

A$840.00 ~~A$1,680.00~~

Volume Pricing
Qty 1-10	~~A$1,680.00~~ A$840.00 each
Qty 11+	~~A$1,512.00~~ A$756.00 each
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Specifications

General

Type:

Protective Window

Model Number:

GE-WW-50-6

Physical & Mechanical Properties

Bevel:

Protective as needed

Clear Aperture (%):

Clear Aperture CA (mm):

43.18

Diameter (mm):

50.80 +0.00/-0.13

Thickness (mm):

6.00 ±0.13

Edges:

Fine Ground

Knoop Hardness (kg/mm²):

780.00

Poisson's Ratio:

0.28

Young's Modulus (GPa):

102.7

Wedge Angle (arcmin):

30' ±15'

Optical Properties

Coating:

Uncoated

Index of Refraction (n_d):

4.002 @ 11µm

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

Germanium (Ge)

Surface Flatness (P-V):

2λ @ 633nm

Surface Quality:

60-40

Wavelength Range (nm):

2000 - 14000

Material Properties

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

6.1

Density (g/cm³):

4.84

Regulatory Compliance

RoHS 2015:

Compliant

Certificate of Conformance:

View

Reach 240:

Compliant

Product Details

30 Arcmin Wedge
High Transmission from 2 – 10µm
Ideal for Infrared Applications Requiring Rugged Optics
Precision Flat Germanium Windows Also Available
Due to material supply chain disruptions with germanium, there may be increased lead times and price changes on our germanium products. For more information, please contact our customer service team.

ISP Optics Germanium (Ge) Wedged Windows provide laser output protection for beam sampling applications and are used to eliminate fringe patterns from etalon effects as well as prevent cavity feedback. Germanium is insoluble, making it inert to water, air, alkalis and acids except nitric acid. Because germanium is subject to thermal runaway, these windows should be used at temperatures below 100°C. Germanium’s high density (5.33g/cm³) should be considered when designing for weight-sensitive systems, and its high index of refraction (~4.0 from 2 - 14μm) should be considered for applications looking to maximize throughput. ISP Optics Germanium (Ge) Wedged Windows offers a broad transmission range and a Knoop Hardness of 780 (approximately twice that of magnesium fluoride), making it suitable for infrared applications requiring rugged optics.

Special Handling

Germanium Optics Handling and Cleaning Guidelines

Germanium optics require special handling and cleaning procedures. Always wear gloves during handling to prevent contamination, and wash hands afterward. Avoid contact between Germanium dust and the eyes, skin, or clothing. When not in use, store optics sealed and covered at temperatures between 20°C and 25°C. Do not expose them to temperatures exceeding 100°C when in use.

Handling Guidelines

Always wear gloves to prevent damage from skin oils.
If Germanium dust is present, take the following precautions:
- Wear safety glasses to protect eyes.
- Use a dust mask or face mask to avoid inhalation.
- Wear gloves to prevent skin contact.
Maintain storage temperature between 20°C and 25°C with humidity below 30%.
Wrap Germanium optics in a lens cloth or pouch and seal in a container when not in use.
Germanium is brittle and heavy — always place it on soft surfaces and avoid dropping it.

Approved Cleaning Solvents

Ethanol
Isopropyl Alcohol
Methanol
Reagent-Grade Acetone
Liquid CO₂
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Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include: