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PSMH
Wavelength range
Surface flatness
Diameter φD
Thickness t
Material
Parallelism
Wedge angle W
Reflectance R
Transmittance T
Laser Damage Threshold*
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Laser line plate mirrors are plate beamsplitters that are optically coated with dielectric multi-layer on the front surface of optical parallels or wedged substrates. The rear surface is coated with multi-layer anti-reflection.

◦Half mirrors divide input beam into reflectance and transmittance ratio of 1:1. A beamsplitter of R:T=1:1 is called “Half Mirror”.
◦Any loss from the input beams of this product is minimized because dielectric coatings have no absorption properties. However, the input ratio of reflection to transmission depends on wavelength, polarization and angle of incident of input beam.
◦Plate beamsplitters have beam deviations on transmission and ghost on rear surface reflections. Wedged substrates are used to prevent ghosting.

Related product
Products
Technical Data
Documents/Downloads
Guide

▶Please contact our Sales Division for customized products. (Customized on size, wavelength or R:T, etc.)
W3802
▶We also have ultra-wideband, broadband and cube types.
▶For a guarantee in reflected wavefront error or transmitted wavefront error, please contact our Sales Division with your requests.
▶Wedged types are marked with an arrow on the side of the substrate indicating the thickest point of the wedge.
▶Please refer to here for Wavelength Characteristic Data (Reference Data, EXCEL file format).

Attention

▶Should these products not function as a half mirror, please check the polarization characteristics of the light source. Do note that LD laser is linear in polarization.
▶The beam deviation at transmission of a wedged beamsplitter is large compared to a one made of optical parallel.
▶The amount of beam deviation of a beamsplitter depends on the thickness of the substrate and the wavelength or the incident angle of the input beam.
▶Transmission curves are based on actual measurements and may vary with manufacturing lots.
▶Surface flatness is the reflected wavefront distortion of the surface prior to coating.
▶Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.

Common Specifications
MaterialBK7 , Synthetic fused silica ,  CaF2
Surface flatnessλ/10( PSMH-157 is Polished)
CoatingFront surface ; Dielectric multilayer coating
Rear surfaces ; Multilayer antireflection coating
Incident angle45°
Divergence ratio
(reflectance : transmittance)
1 : 1
Surface Quality
(Scratch-Dig)
10-5 (PSMH-157 ; 40-20)
Clear aperture90% of the diameter
Outline Drawing

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Schematic

Zoom
Optical Parallel

Zoom
Wedged Substrate

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Typical Reflectance Data & Typical Transmittance Data
■PSMH-157

Zoom
R: Reflectance T: Transmission
■PSMH-193

Zoom
R: Reflectance T: Transmission
■PSMH-248/266

Zoom
R: Reflectance T: Transmission
■PSMH-308/355

Zoom
R: Reflectance T: Transmission
■PSMHQ-405

Zoom
R: Reflectance T: Transmission
■PSMH-405

Zoom
R: Reflectance T: Transmission
■PSMHQ-515/532

Zoom
R: Reflectance T: Transmission
■PSMHQ-1030/1064

Zoom
R: Reflectance T: Transmission
■PSMH-1064

Zoom
R: Reflectance T: Transmission
Spec
Compare
Part Number
Add to cart Cart
    JP Yen Stock Qty
PSMH-30C03-P-157
PSMH-50C05-P-157
PSMH-30C03-10-193
PSMH-30C05-10W-193
PSMH-50C05-10-193
PSMH-50C08-10W-193
PSMH-30C03-10-248/266
PSMH-30C05-10W-248/266
PSMH-50C05-10-248/266
PSMH-50C08-10W-248/266
PSMH-30C03-10-308/355
PSMH-30C05-10W-308/355
PSMH-50C05-10-308/355
PSMH-50C08-10W-308/355
PSMHQ-30C03-10-405NEW
PSMHQ-30C05-10W-405NEW
PSMHQ-50C05-10-405NEW
PSMHQ-50C08-10W-405NEW
PSMH-30C03-10-405生産中止
PSMH-30C05-10W-405
PSMH-50C05-10-405
PSMH-50C08-10W-405生産中止
PSMHQ-30C03-10-515/532NEW
PSMHQ-30C05-10W-515/532NEW
PSMHQ-50C05-10-515/532NEW
PSMHQ-50C08-10W-515/532NEW
PSMHQ-30C03-10-1030/1064NEW
PSMHQ-30C05-10W-1030/1064NEW
PSMHQ-50C05-10-1030/1064NEW
PSMHQ-50C08-10W-1030/1064NEW
PSMH-30C03-10-1064
PSMH-30C05-10W-1064
PSMH-50C05-10-1064
PSMH-50C08-10W-1064

157nm

Polished

φ30mm

3mm

CaF2

<3′

R=40±10%

0.5J/cm2

157nm

Polished

φ50mm

5mm

CaF2

<3′

R=40±10%

0.5J/cm2

193nm

λ/10

φ30mm

3mm

Synthetic fused silica

<5″

T=45±5%

1J/cm2

193nm

λ/10

φ30mm

5mm

Synthetic fused silica

1°±5′

T=45±5%

1J/cm2

193nm

λ/10

φ50mm

5mm

Synthetic fused silica

<5″

T=45±5%

1J/cm2

193nm

λ/10

φ50mm

8mm

Synthetic fused silica

1°±5′

T=45±5%

1J/cm2

248-266nm

λ/10

φ30mm

3mm

Synthetic fused silica

<5″

T=50±3%

2J/cm2

248-266nm

λ/10

φ30mm

3mm

Synthetic fused silica

1°±5′

T=50±3%

2J/cm2

248-266nm

λ/10

φ50mm

5mm

Synthetic fused silica

<5″

T=50±3%

2J/cm2

248-266nm

λ/10

φ50mm

8mm

Synthetic fused silica

1°±5′

T=50±3%

2J/cm2

308-355nm

λ/10

φ30mm

3mm

Synthetic fused silica

<5″

T=Average 50±5%

2J/cm2

308-355nm

λ/10

φ30mm

3mm

Synthetic fused silica

1°±5′

T=Average 50±5%

2J/cm2

308-355nm

λ/10

φ50mm

5mm

Synthetic fused silica

<5″

T=Average 50±5%

2J/cm2

308-355nm

λ/10

φ50mm

8mm

Synthetic fused silica

1°±5′

T=Average 50±5%

2J/cm2

390 - 410nm

λ/10

φ30mm

3mm

Synthetic fused silica

<5″

T=50±3%

2.1J/cm2

390 - 410nm

λ/10

φ30mm

5mm

Synthetic fused silica

1°±5′

T=50±3%

2.1J/cm2

390 - 410nm

λ/10

φ50mm

5mm

Synthetic fused silica

<5″

T=50±3%

2.1J/cm2

390 - 410nm

λ/10

φ50mm

8mm

Synthetic fused silica

1°±5′

T=50±3%

2.1J/cm2

390 - 410nm

λ/10

φ30mm

3mm

BK7

<5″

T=50±3%

2.1J/cm2

390 - 410nm

λ/10

φ30mm

5mm

BK7

1°±5′

T=50±3%

2.1J/cm2

390 - 410nm

λ/10

φ50mm

5mm

BK7

<5″

T=50±3%

2.1J/cm2

390 - 410nm

λ/10

φ50mm

8mm

BK7

1°±5′

T=50±3%

2.1J/cm2

525-532nm

λ/10

φ30mm

3mm

Synthetic fused silica

<5″

T=50±3%

8J/cm2

525-532nm

λ/10

φ30mm

5mm

Synthetic fused silica

1°±5′

T=50±3%

8J/cm2

525-532nm

λ/10

φ50mm

5mm

Synthetic fused silica

<5″

T=50±3%

8J/cm2

525-532nm

λ/10

φ50mm

8mm

Synthetic fused silica

1°±5′

T=50±3%

8J/cm2

1030-1064nm

λ/10

φ30mm

3mm

Synthetic fused silica

<5″

T=50±3%

20J/cm2

1030-1064nm

λ/10

φ30mm

5mm

Synthetic fused silica

1°±5′

T=50±3%

20J/cm2

1030-1064nm

λ/10

φ50mm

5mm

Synthetic fused silica

<5″

T=50±3%

20J/cm2

1030-1064nm

λ/10

φ50mm

8mm

Synthetic fused silica

1°±5′

T=50±3%

20J/cm2

1064nm

λ/10

φ30mm

3mm

BK7

<5″

T=50±3%

20J/cm2

1064nm

λ/10

φ30mm

5mm

BK7

1°±5′

T=50±3%

20J/cm2

1064nm

λ/10

φ50mm

5mm

BK7

<5″

T=50±3%

20J/cm2

1064nm

λ/10

φ50mm

8mm

BK7

1°±5′

T=50±3%

20J/cm2

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