SIGMAKOKI

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WSB/WSSQ/WSSQK
Material
Diameter φD
Thickness t
Surface Flatness
Wedge angle
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Wedged substrates can separate the reflected beam by the front and back surface of the substrates by the slight wedge angle. They can be used as a reference test plate for interferometers and beam samplers.

◦It can also be used as a prism to refract at a small angle. Beam deflection angle δ can be calculated refractive index n, from the wedge angle α.
δ = sin−1( n sinα) − α ≒( n − 1) α
◦In BK7, 0.52 times the angle of the wedge, and in synthetic fused silica, 0.46 times the angle of the wedge. (Visible range, normal incidence)

Related product
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Technical Data
Documents/Downloads
Guide

▶An arrow mark on the thicker side of the edge indicates front surface of the substrate.
▶It is also available beam sampler (BS4) coated with anti-reflection coating on the back.
W3025
▶It is also available fabrication of the wedged substrates with a requested coating.

Attention

▶Wedged substrates are not coated on both sides. There is a 3.5 to 4% reflection of the surface of the glass.
▶If the wedged substrate is inserted in the optical path of the laser beam, the transmitted beam is inclined slightly causing the refraction.

Common Specifications
MaterialFused Silica for excimer laser (248nm)
Clear aperture90% of the diameter
Outline Drawing

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Schematic

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Typical Transmittance Data

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T: Transmission
Surface Accuracy Data (reference data)

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・Surface accuracy measurement method:
    Measured with Zygo laser interferometer
・Surface accuracy measurement wavelength
    632.8nm
・Surface accuracy guaranteed temperature
    23°C±2°C
Spec
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Part Number
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    JP Yen Stock Qty
WSSQ-10C05-10-1
WSSQ-10C05-20-1
WSSQ-15C05-10-1
WSSQ-15C05-20-1
WSSQ-20C05-10-1
WSSQ-20C05-20-1
WSSQ-25C05-10-1
WSSQ-25C05-20-1
WSSQ-30C05-10-0.5
WSSQ-30C05-20-0.5
WSSQ-30C05-10-1
WSSQ-30C05-20-1
WSSQ-30C05-10-2
WSSQ-30C05-20-2
WSSQ-30C07-10-3
WSSQ-30C07-20-3
WSSQ-40C06-10-1
WSSQ-40C06-20-1
WSSQ-50C08-10-0.5
WSSQ-50C08-20-0.5
WSSQ-50C08-10-1
WSSQ-50C08-20-1
WSSQ-50C08-10-2
WSSQ-50C08-20-2
WSSQ-50C10-10-3
WSSQ-50C10-20-3
WSSQ-60C10-10-1
WSSQ-60C10-20-1
WSSQ-80C12-10-1
WSSQ-80C12-20-1
WSSQ-100C15-10-1
WSSQ-100C15-20-1
WSSQK-30C05-10-1
WSSQK-50C08-10-1

Synthetic fused silica

φ10mm

5mm

λ/10

1°±5′

20−10

Synthetic fused silica

φ10mm

5mm

λ/20

1°±5′

20−10

Synthetic fused silica

φ15mm

5mm

λ/10

1°±5′

20−10

Synthetic fused silica

φ15mm

5mm

λ/20

1°±5′

20−10

Synthetic fused silica

φ20mm

5mm

λ/10

1°±5′

20−10

Synthetic fused silica

φ20mm

5mm

λ/20

1°±5′

20−10

Synthetic fused silica

φ25mm

5mm

λ/10

1°±5′

20−10

Synthetic fused silica

φ25mm

5mm

λ/20

1°±5′

20−10

Synthetic fused silica

φ30mm

5mm

λ/10

0.5°±5′

20−10

Synthetic fused silica

φ30mm

5mm

λ/20

0.5°±5′

20−10

Synthetic fused silica

φ30mm

5mm

λ/10

1°±5′

20−10

Synthetic fused silica

φ30mm

5mm

λ/20

1°±5′

20−10

Synthetic fused silica

φ30mm

5mm

λ/10

2°±5′

20−10

Synthetic fused silica

φ30mm

5mm

λ/20

2°±5′

20−10

Synthetic fused silica

φ30mm

7mm

λ/10

3°±5′

20−10

Synthetic fused silica

φ30mm

7mm

λ/20

3°±5′

20−10

Synthetic fused silica

φ40mm

6mm

λ/10

1°±5′

20−10

Synthetic fused silica

φ40mm

6mm

λ/20

1°±5′

20−10

Synthetic fused silica

φ50mm

8mm

λ/10

0.5°±5′

20−10

Synthetic fused silica

φ50mm

8mm

λ/20

0.5°±5′

20−10

Synthetic fused silica

φ50mm

8mm

λ/10

1°±5′

20−10

Synthetic fused silica

φ50mm

8mm

λ/20

1°±5′

20−10

Synthetic fused silica

φ50mm

8mm

λ/10

2°±5′

20−10

Synthetic fused silica

φ50mm

8mm

λ/20

2°±5′

20−10

Synthetic fused silica

φ50mm

10mm

λ/10

3°±5′

20−10

Synthetic fused silica

φ50mm

10mm

λ/20

3°±5′

20−10

Synthetic fused silica

φ60mm

10mm

λ/10

1°±5′

20−10

Synthetic fused silica

φ60mm

10mm

λ/20

1°±5′

20−10

Synthetic fused silica

φ80mm

12mm

λ/10

1°±5′

20−10

Synthetic fused silica

φ80mm

12mm

λ/20

1°±5′

20−10

Synthetic fused silica

φ100mm

15mm

λ/10

1°±5′

20−10

Synthetic fused silica

φ100mm

15mm

λ/20

1°±5′

20−10

Synthetic fused silica for excimer laser

φ30mm

5mm

λ/10

1°±5′

20−10

Synthetic fused silica for excimer laser

φ50mm

8mm

λ/10

1°±5′

20−10

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